Type: | Package |
Title: | Mapping Global Data |
Version: | 1.3-8 |
Date: | 2023-10-15 |
Description: | Enables mapping of country level and gridded user datasets. |
License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
Depends: | R (≥ 2.10.0), sp |
Imports: | fields, methods, raster, terra |
Suggests: | rworldxtra, RColorBrewer, classInt, sf |
LazyData: | true |
URL: | https://github.com/AndySouth/rworldmap/, https://groups.google.com/forum/#!forum/rworldmap |
BugReports: | https://github.com/AndySouth/rworldmap/issues |
RoxygenNote: | 7.2.3 |
Encoding: | UTF-8 |
NeedsCompilation: | no |
Packaged: | 2023-10-15 10:51:33 UTC; rsb |
Author: | Andy South |
Maintainer: | Andy South <southandy@gmail.com> |
Repository: | CRAN |
Date/Publication: | 2023-10-16 09:40:38 UTC |
For mapping global data.
Description
Enables mapping of country level and gridded user datasets by facilitating joining to modern world maps and offering visualisation options. Country borders are derived from Natural Earth data v 1.4.0.
Enables mapping of country level and gridded user datasets by facilitating joining to modern world maps and offering visualisation options. Country borders are derived from Natural Earth data v 1.4.0.
Details
Package: | rworldmap |
Type: | Package |
Version: | 1.3-4 |
Date: | 2014-11-11 |
License: | GPL (>= 2) |
Country Level Data can be joined to a map using
joinCountryData2Map
, then mapped using
mapCountryData
. These functions can cope with a range of
country names and country codes.
Country boundaries are derived from version 1.4.0 of Natural Earth data as
described in countriesCoarse
. Higher resolution boundaries are
provided in a companion package rworldxtra.
More generic functions allow the user to provide their own polygon map using
joinData2Map
and mapPolys
.
Bubble, bar and pie charts can be added to maps using
mapBubbles
, mapBars
and mapPies
.
Try the new method barplotCountryData
for producing a ranked
bar plot of country data with country names that can provide a useful
companion to maps.
Options are provided for categorising data, colouring maps and symbols, and adding legends.
Gridded data can be mapped using mapGriddedData
, but the
raster package is much more comprehensive.
Type vignette('rworldmap') to access a short document showing a few examples of the main rworldmap functions to get you started.
Country Level Data can be joined to a map using
joinCountryData2Map
, then mapped using
mapCountryData
. These functions can cope with a range of
country names and country codes.
Country boundaries are derived from version 1.4.0 of Natural Earth data as
described in countriesCoarse
. Higher resolution boundaries are
provided in a companion package rworldxtra.
More generic functions allow the user to provide their own polygon map using
joinData2Map
and mapPolys
.
Bubble, bar and pie charts can be added to maps using
mapBubbles
, mapBars
and mapPies
.
Try the new method barplotCountryData
for producing a ranked
bar plot of country data with country names that can provide a useful
companion to maps.
Options are provided for categorising data, colouring maps and symbols, and adding legends.
Gridded data can be mapped using mapGriddedData
, but the
raster package is much more comprehensive.
Type vignette('rworldmap') to access a short document showing a few examples of the main rworldmap functions to get you started.
Author(s)
Andy South
with contributions from Joe Scutt-Phillips, Barry Rowlingson, Roger Bivand and Pru Foster
Maintainer: <southandy@gmail.com>
References
Stable version :
http://cran.r-project.org/web/packages/rworldmap
Development version :
https://r-forge.r-project.org/projects/rworldmap/
Discussion group : http://groups.google.com/group/rworldmap
Stable version :
http://cran.r-project.org/web/packages/rworldmap
Development version :https://github.com/AndySouth/rworldmap
Discussion group : http://groups.google.com/group/rworldmap
Examples
#mapping country level data, with no file specified it uses internal example data
mapCountryData()
#specifying region
mapCountryData(mapRegion="asia")
#mapping gridded data, with no file specified it uses internal example data
mapGriddedData()
#specifying region
mapGriddedData(mapRegion="africa")
#aggregating gridded data to country level
#with no file specified it uses internal example data
mapHalfDegreeGridToCountries()
Add a legend to a map
Description
Creates a colour bar legend, showing the range of colours and the values the colours correspond to. Relies heavily on image.plot() from the package fields. For simple use, simply use addLegend=TRUE in a rworldmap map function. Or users can call addMapLegend seperately to fine tune the legend. The user should insure that data, catMethod,numCats and colourPalette match the values used in the plot. The legend is designed to be useful for the variety of classification methods that exist.
Usage
addMapLegend(
colourVector = "",
cutVector = "",
legendLabels = "limits",
labelFontSize = 1,
legendWidth = 1.2,
legendShrink = 0.9,
legendMar = 3,
horizontal = TRUE,
legendArgs = NULL,
tcl = -0.5,
mgp = c(3, 1, 0),
sigFigs = 4,
digits = 3,
legendIntervals = "data",
plottedData = "",
catMethod = "pretty",
colourPalette = "heat"
)
Arguments
colourVector |
colours used in the map |
cutVector |
the categories or breaks used in the map |
legendLabels |
Controls the style of the labels on the legend. Choose "none" for no labels, "limits" for the two end values, and "all" to show all the break values if they fit. |
labelFontSize |
Controls font size of the labels. A multiplier, so use 2 to double the size, 0.5 to halve it, etc. |
legendWidth |
Controls the width of the colour bar. |
legendShrink |
Controls the length of the colour bar. 1 means full width of the plot. |
legendMar |
Moves the legend away from the side of the plot. Measured in character widths. |
horizontal |
If TRUE the legend is horizontal, if FALSE, vertical. |
legendArgs |
For producing titles and labels. A list of arguments to be passed to mtext. |
tcl |
Controls the length of the tick marks.Useful when labelFontSize is changed. |
mgp |
Numeric vector length 3. The second element controls the distance between labels and the axis. Useful when labelFontSize is changed. |
sigFigs |
The number of significant figures for legend labels. |
digits |
An argument to the formatting of the labels |
legendIntervals |
"page" or "data". Controls the division of the colour bar, "page" sets the intervals equal on the page, "data" sets them to be equal in the units of the data. |
plottedData |
unused but are passed with mapParams |
catMethod |
unused but are passed with mapParams |
colourPalette |
unused but are passed with mapParams |
Details
The default legend is a horizontal colour bar, with labels only at the extremes.
Can use a parameter list returned from mapping functions, e.g. mapCountryData(). mapCountryData(addLegend=TRUE) produces same results as: mapParams <- mapCountryData(addLegend=FALSE) do.call(addMapLegend, mapParams)
Using the following allows the modification of the legend : mapParams <- mapCountryData(addLegend=FALSE) do.call(addMapLegend, c(mapParams, legendLabels="all", legendWidth=0.5))
Value
Adds a legend to a plot.
Note
Can have the unintentional effect of modifying graphical parameters, e.g. mfcol reverts to mfrow.
Author(s)
Andy South
See Also
mapCountryData, mapGriddedData, image.plot
Examples
#Set up the plot so the world map uses the full width.
mapDevice()
#join eaxmple data to a map
data("countryExData",envir=environment())
sPDF <- joinCountryData2Map(countryExData
, joinCode = "ISO3"
, nameJoinColumn = "ISO3V10"
)
#map the data with no legend
mapParams <- mapCountryData( sPDF
, nameColumnToPlot="BIODIVERSITY"
, addLegend='FALSE'
)
#add a modified legend using the same initial parameters as mapCountryData
do.call( addMapLegend, c( mapParams
, legendLabels="all"
, legendWidth=0.5
))
Add a legend of coloured boxes to a map
Description
Creates a colour box legend, showing the range of colours and the values the colours correspond to. This works well for categorical data with relatively few categories.
Usage
addMapLegendBoxes(
cutVector = "",
colourVector = "",
x = "bottomleft",
horiz = FALSE,
title = "category",
cex = 1,
pt.cex = 2,
col = "gray",
bg = "white",
legendText = "",
catMethod = "categorical",
plottedData = "",
colourPalette = "heat",
sigFigs = 2,
missingCountryCol = "white",
...
)
Arguments
cutVector |
the categories or breaks used in the map |
colourVector |
colours used in the map |
x |
positioning of legend e.g. 'bottomleft', 'topright' |
horiz |
if TRUE horizontal legend |
title |
title for Legend |
cex |
controls the font size, default is 1 |
pt.cex |
controls size of colour boxes relative to cex, default is 2 |
col |
colour for boundary of colour boxes, default is "gray" |
bg |
colour for legend background, default is "white", NA makes the legend background transparent |
legendText |
the text to put against each legend box, if left blank cutVector is used, needs to be a vector the same length as length cutVector |
catMethod |
the categorisation method used influences what text added to legend elements, for 'categorical' just the category names are used for other options limits are used |
plottedData |
not used yet but maybe in future |
colourPalette |
not used yet but maybe in future |
sigFigs |
not used yet but maybe in future |
missingCountryCol |
not used yet but maybe in future |
... |
to allow other params to be set in legend |
Details
This creates a legend with separate boxes of colour rather than addMapLegend() which creates a colour bar. This method is used as the default for categorical data.
See the examples for how to use a parameter list returned from mapping functions.
Value
Adds a legend to a plot.
Author(s)
Andy South
See Also
addMapLegend, mapCountryData, mapGriddedData
Examples
#Set up the plot so the world map uses the full width.
mapDevice()
#map example categorical data with no legend
mapParams <- mapCountryData(nameColumnToPlot='GEO3major'
, catMethod='categorical'
, addLegend='FALSE'
)
#add default legend using the same parameters as mapCountryData
do.call( addMapLegendBoxes, c( mapParams))
#adding a modified legend by specifying extra parameters
do.call( addMapLegendBoxes, c(mapParams,x='bottom',horiz=TRUE,title="Region"))
#user defined map colour sceme
mapParams <- mapCountryData(nameColumnToPlot='GEO3major'
, catMethod='categorical'
, addLegend='FALSE'
, colourPalette=c('white','green','red','yellow','blue','black')
)
#changing legendText
mapParams$legendText <- c('antarctic','africa','oceania'
,'americas','s.asia','eurasia')
do.call( addMapLegendBoxes, c(mapParams,x='bottom',title="Region",horiz=TRUE))
#or this way
#do.call( addMapLegendBoxes
# , c(mapParams
# ,list(legendText=c('antarctic','africa','oceania'
# ,'americas','s.asia','eurasia')
# ,x='bottom',title="Region",horiz=TRUE)))
Aggregates global half degree gridded data to countries
Description
Aggregates global half degree gridded data to countries (options for sum, mean, min, max ). Uses a very simple grid map defining a single country identity for each half degree cell. (other more sophisticated approaches dividing cells between multiple countries will be investigated in future). The country identity at each cell is specified in data(gridCountriesDegreesHalf).
Usage
aggregateHalfDegreeGridToCountries(inFile = "", aggregateOption = "sum")
Arguments
inFile |
either a gridascii filename or an sp SpatialGridDataFrame object specifying a global half degree grid dataset |
aggregateOption |
how to aggregate the data ('sum','mean','min','max') |
Value
a dataframe with 2 columns : numeric country codes and the aggregated value for each country
Author(s)
andy south #@importFrom maptools readAsciiGrid
See Also
Examples
data(gridExData,envir=environment(),package="rworldmap")
gridExData <- get("gridExData")
#aggregating the gridded data to countries
dF <- aggregateHalfDegreeGridToCountries(gridExData)
#joining the aggregated data to a country map
sPDF <- joinCountryData2Map(dF, nameJoinColumn='UN', joinCode='UN')
#plotting the map
mapCountryData(sPDF,nameColumnToPlot='sum_pa2000.asc')
Barplot country-level data.
Description
Draw a barplot of country-level data, ranking the countries to allow easy
comparison.
One bar per country and to be able to read country names.
This is useful for comparing with maps created by
mapCountryData
and accepts many of the same arguments for
categorising and colouring.
Usage
barplotCountryData(
dF = "",
nameColumnToPlot = "",
nameCountryColumn = "NAME",
numPanels = 4,
scaleSameInPanels = FALSE,
main = nameColumnToPlot,
numCats = 5,
catMethod = "quantiles",
colourPalette = "heat",
addLegend = TRUE,
toPDF = FALSE,
outFile = "",
decreasing = TRUE,
na.last = TRUE,
cex = 0.7,
...
)
Arguments
dF |
a dataframe containing at least one column with numeric data and one with country names or other labels |
nameColumnToPlot |
name of column containing the data you want to plot |
nameCountryColumn |
name of column containing country names (or other labels to be used in plot) |
numPanels |
the number of layout panels in the plot |
scaleSameInPanels |
whether to set the scale the same in each panel TRUE/FALSE, default=FALSE allowing more of the variability in the data to be viewed |
main |
title for the plot |
numCats |
number of categories to put the data in, may be modified if this number is incompatible with the catMethod chosen |
catMethod |
method for categorisation of data "pretty", "fixedWidth", "diverging", "logFixedWidth","quantiles","categorical", or a numeric vector defining breaks |
colourPalette |
a string describing the colour palette to use, choice of :
|
addLegend |
NOT YET WORKING whether to add a legend or not, TRUE/FALSE |
toPDF |
whether to output the plot to a pdf rather than the screen, TRUE/FALSE |
outFile |
output filename if toPDF=TRUE |
decreasing |
logical. Should the sort order be increasing or decreasing? |
na.last |
for controlling the treatment of NAs. If TRUE, missing values in the data are put last; if FALSE, they are put first; if NA, they are removed. |
cex |
sizing of labels, default = 0.7 |
... |
other arguments to pass to barplot |
Details
Finer control can be achieved by addMapLegend
.
Value
invisibly returns a list containing the data and main options used
for the map, the list can be passed to addMapLegend
or
addMapLegendBoxes
along with additional options to allow
greater flexibility in legend creation.
Warning
will generate unhelpful errors in data categorisation if inappropriate options are chosen, e.g. with catMethod:Quantiles if numCats too high so that unique breaks cannot be defined.
Author(s)
andy south
See Also
classInt, RColorBrewer
Examples
#default uses popn data in the default map
barplotCountryData()
data("countryExData",envir=environment(),package="rworldmap")
barplotCountryData( countryExData
, nameColumnToPlot="BIODIVERSITY"
, nameCountryColumn = "Country"
)
A map of world coasts at coarse resolution.
Description
A spatial lines dataframe containing world coasts at a coarse resolution.
Format
The format is: Formal class 'SpatialLinesDataFrame' [package "sp"] with 4 slots
Details
Used in mapGriddedData(addBorders='coasts'). This is the 1:110m coasts data from Natural Earth version 1.3.0.
Source
http://www.naturalearthdata.com/downloads/110m-physical-vectors/
Examples
data(coastsCoarse)
mapGriddedData(addBorders='coasts')
plot(coastsCoarse,add=TRUE,col='blue')
a coarse resolution world map, a vector map of 244 country boundaries,suitable for global maps
Description
A 'SpatialPolygonsDataFrame' [package "sp"] object containing a simplified world map. Polygons are attributed with country codes. 244 countries. Based on Natural Earth data.
Format
The format is: Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots
Details
Derived from version 1.4.0 of Natural Earth data 1:110 m data. Missing
countries at this resolution are added in from the higher resolution 1:50 m
data so that these countries are included e.g. in mapBubbles
.
The different country boundaries in rworldmap are processed from Natural
Earth Data as follows :
All :
~ rename any non-ASCII country names
that cause R trouble
~ rename Curacao which is particularly troublesome
!
~ check polygon geometries using checkPolygonsHoles
~ set
projections, e.g. proj4string(countriesCoarse) <- CRS("+proj=longlat
+ellps=WGS84 +datum=WGS84 +no_defs")
~ set polygon IDs to country names
(from ADMIN field)
~ copy ISO_A3 to ISO3
~ replace missing ISO3
codes (6 in this version) with ADM0_A3
~ check for duplicate ISO3 codes
(2 in this version)
~ set ISO3 for Gaza to Gaza and 'Ashmore and Cartier
Islands' to Ashm
~ replace POP_EST of -99 with NA
~ join on
countryRegions data
countriesCoarseLessIslands : ne_110
countriesCoarse : ne_110 plus extra
countries from ne_50 plus Tuvalu from ne_10
countriesLow : ne_50 plus
Tuvalu from ne_10
countriesHigh (in package rworldxtra) : ne_10
Source
http://www.naturalearthdata.com/downloads/110m-cultural-vectors/110m-admin-0-countries/
Examples
data(countriesCoarse)
a coarse resolution world map, a vector map of 177 country boundaries, suitable for global maps
Description
A 'SpatialPolygonsDataFrame' [package "sp"] object containing a simplified world map. Polygons are attributed with country codes. 177 countries. Derived fronm version 1.4.0 of Natural Earth data 1:110 m data.
Format
The format is: Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots
Details
The different country boundaries in rworldmap are processed from Natural
Earth Data as follows :
All :
~ rename any non-ASCII country names
that cause R trouble
~ rename Curacao which is particularly troublesome
!
~ check polygon geometries using checkPolygonsHoles
~ set
projections, e.g. proj4string(countriesCoarse) <- CRS("+proj=longlat
+ellps=WGS84 +datum=WGS84 +no_defs")
~ set polygon IDs to country names
(from ADMIN field)
~ copy ISO_A3 to ISO3
~ replace missing ISO3
codes (6 in this version) with ADM0_A3
~ check for duplicate ISO3 codes
(2 in this version)
~ set ISO3 for Gaza to Gaza and 'Ashmore and Cartier
Islands' to Ashm
~ replace POP_EST of -99 with NA
~ join on
countryRegions data
countriesCoarseLessIslands : ne_110
countriesCoarse : ne_110 plus extra
countries from ne_50 plus Tuvalu from ne_10
countriesLow : ne_50 plus
Tuvalu from ne_10
countriesHigh (in package rworldxtra) : ne_10
Source
http://www.naturalearthdata.com/downloads/110m-cultural-vectors/110m-admin-0-countries/
Examples
data(countriesCoarseLessIslands)
a low resolution world map, a vector map of 244 country boundaries, suitable for zooming in on regions or large global maps
Description
A 'SpatialPolygonsDataFrame' [package "sp"] object containing country boundaries derived from Natural Earth data. Polygons are attributed with country codes. Derived from version 1.4.0 of Natural Earth data 1:50 m data.
Format
The format is: Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots
Details
The different country boundaries in rworldmap are processed from Natural
Earth Data as follows :
All :
~ rename any non-ASCII country names
that cause R trouble
~ rename Curacao which is particularly troublesome
!
~ check polygon geometries using checkPolygonsHoles
~ set
projections, e.g. proj4string(countriesCoarse) <- CRS("+proj=longlat
+ellps=WGS84 +datum=WGS84 +no_defs")
~ set polygon IDs to country names
(from ADMIN field)
~ copy ISO_A3 to ISO3
~ replace missing ISO3
codes (6 in this version) with ADM0_A3
~ check for duplicate ISO3 codes
(2 in this version)
~ set ISO3 for Gaza to Gaza and 'Ashmore and Cartier
Islands' to Ashm
~ replace POP_EST of -99 with NA
~ join on
countryRegions data
countriesCoarseLessIslands : ne_110
countriesCoarse : ne_110 plus extra
countries from ne_50 plus Tuvalu from ne_10
countriesLow : ne_50 plus
Tuvalu from ne_10
countriesHigh (in package rworldxtra) : ne_10
Source
http://www.naturalearthdata.com/downloads/50m-cultural-vectors/
Examples
data(countriesLow)
Produce regional data from country level data
Description
A function to aggregate country level data into regional data. For example finding the total population of Asia, Europe,etc, from country level populations. As well as sums, other functions can be used, like mean, median, min, max, etc. There are currently 8 choices of region and 4 choices of country code.
Usage
country2Region(
regionType = "",
inFile = "",
nameDataColumn = "",
joinCode = "",
nameJoinColumn = "",
FUN = mean,
...
)
Arguments
regionType |
Must be one of: "GEO3", "GEO3major", "IMAGE24", "GLOCAF", "Stern", "SRES", "SRESmajor" or "GBD" |
inFile |
a data frame |
nameDataColumn |
The name of the data column to aggregate |
joinCode |
The type of code to join with. Must be one of: "ISO2", "ISO3", "Numeric" or "FIPS" |
nameJoinColumn |
The name of a column of inFile. Contains joining codes. |
FUN |
A function to apply to each region, e.g. 'mean' |
... |
further arguments to be passed to FUN, e.g. na.rm=TRUE |
Details
The user must specify 'nameJoinColumn' from their data which contains country codes, and joinCode which specifies the type of code. regionType specifies which regions to aggregate the data to. Using FUN='identity' will return the neames of the countries within each region.
Value
If FUN returns a single value, country2Region returns a data frame, with value of FUN for each region.
If FUN returns more than one value, country2Region will return a list, with one element for each region.
See Also
For producing maps of regional data from aggregated country level
data, see mapByRegion
Examples
data(countryExData)
#to report which countries make up regions
country2Region(regionType="Stern")
#Using country2Region to calculate mean Environmental Health index in Stern regions.
sternEnvHealth <- country2Region(inFile=countryExData
,nameDataColumn="ENVHEALTH"
,joinCode="ISO3"
,nameJoinColumn="ISO3V10"
,regionType="Stern"
,FUN='mean'
)
print(sternEnvHealth)
#A simple plot of this data.
#dotchart(sort(sternEnvHealth))
dotchart(sort(sternEnvHealth[,1]))
#use FUN='identity' to see which countries in your data belong to which region.
country2Region(inFile=countryExData
,nameDataColumn="Country"
,joinCode="ISO3"
,nameJoinColumn="ISO3V10"
,regionType="Stern"
,FUN='identity'
)
#Change FUN to length, to count the number of countries in each region.
country2Region(inFile=countryExData
,nameDataColumn="Country"
,joinCode="ISO3"
,nameJoinColumn="ISO3V10"
,regionType="Stern"
,FUN='length'
)
Example dataset for country level data (2008 Environmental Performance Index)
Description
A dataframe containing example country level data for 149 countries. This is the 2008 Environmental Performance Index (EPI) downloaded from http://epi.yale.edu/. Used here with permission, further details on the data can be found there. The data are referenced by ISO 3 letter country codes and country names.
Format
A data frame with 149 observations on the following 80 variables.
- ISO3V10
a character vector
- Country
a character vector
- EPI_regions
a character vector
- GEO_subregion
a character vector
- Population2005
a numeric vector
- GDP_capita.MRYA
a numeric vector
- landlock
a numeric vector
- landarea
a numeric vector
- density
a numeric vector
- EPI
a numeric vector
- ENVHEALTH
a numeric vector
- ECOSYSTEM
a numeric vector
- ENVHEALTH.1
a numeric vector
- AIR_E
a numeric vector
- WATER_E
a numeric vector
- BIODIVERSITY
a numeric vector
- PRODUCTIVE_NATURAL_RESOURCES
a numeric vector
- CLIMATE
a numeric vector
- DALY_SC
a numeric vector
- WATER_H
a numeric vector
- AIR_H
a numeric vector
- AIR_E.1
a numeric vector
- WATER_E.1
a numeric vector
- BIODIVERSITY.1
a numeric vector
- FOREST
a numeric vector
- FISH
a numeric vector
- AGRICULTURE
a numeric vector
- CLIMATE.1
a numeric vector
- ACSAT_pt
a numeric vector
- WATSUP_pt
a numeric vector
- DALY_pt
a numeric vector
- INDOOR_pt
a numeric vector
- PM10_pt
a numeric vector
- OZONE_H_pt
a numeric vector
- SO2_pt
a numeric vector
- OZONE_E_pt
a numeric vector
- WATQI_pt
a numeric vector
- WATSTR_pt
a numeric vector
- WATQI_GEMS.station.data
a numeric vector
- FORGRO_pt
a numeric vector
- CRI_pt
a numeric vector
- EFFCON_pt
a numeric vector
- AZE_pt
a numeric vector
- MPAEEZ_pt
a numeric vector
- EEZTD_pt
a numeric vector
- MTI_pt
a numeric vector
- IRRSTR_pt
a numeric vector
- AGINT_pt
a numeric vector
- AGSUB_pt
a numeric vector
- BURNED_pt
a numeric vector
- PEST_pt
a numeric vector
- GHGCAP_pt
a numeric vector
- CO2IND_pt
a numeric vector
- CO2KWH_pt
a numeric vector
- ACSAT
a numeric vector
- WATSUP
a numeric vector
- DALY
a numeric vector
- INDOOR
a numeric vector
- PM10
a numeric vector
- OZONE_H
a numeric vector
- SO2
a numeric vector
- OZONE_E
a numeric vector
- WATQI
a numeric vector
- WATQI_GEMS.station.data.1
a numeric vector
- WATSTR
a numeric vector
- FORGRO
a numeric vector
- CRI
a numeric vector
- EFFCON
a numeric vector
- AZE
a numeric vector
- MPAEEZ
a numeric vector
- EEZTD
a numeric vector
- MTI
a numeric vector
- IRRSTR
a numeric vector
- AGINT
a numeric vector
- AGSUB
a numeric vector
- BURNED
a numeric vector
- PEST
a numeric vector
- GHGCAP
a numeric vector
- CO2IND
a numeric vector
- CO2KWH
a numeric vector
Details
2008 Environmental Performance Index (EPI) data downloaded from : http://epi.yale.edu/Downloads
Disclaimers This 2008 Environmental Performance Index (EPI) tracks national environmental results on a quantitative basis, measuring proximity to an established set of policy targets using the best data available. Data constraints and limitations in methodology make this a work in progress. Further refinements will be undertaken over the next few years. Comments, suggestions, feedback, and referrals to better data sources are welcome at: http://epi.yale.edu or epi@yale.edu.
Source
http://epi.yale.edu/Downloads
References
Esty, Daniel C., M.A. Levy, C.H. Kim, A. de Sherbinin, T. Srebotnjak, and V. Mara. 2008. 2008 Environmental Performance Index. New Haven: Yale Center for Environmental Law and Policy.
Examples
data(countryExData,envir=environment(),package="rworldmap")
str(countryExData)
Regional Classification Table
Description
A number of regional classifications exist, e.g. SRES, Stern, etc. This table can be used to find which grouping a country belongs to, given its country code. A variety of different codes or groupings can be used.
Format
A data frame with the following variables.
- ISO3
ISO 3 letter country code
- ADMIN
country name
- REGION
7 region continent classification
- continent
6 continents classification
- GEO3major
Global Environment Outlook GEO3 major region names
- GEO3
Global Environment Outlook GEO3 major region names
- IMAGE24
Image24 region names
- GLOCAF
GLOCAF region names
- Stern
Stern report region names
- SRESmajor
SRES major region names
- SRES
SRES region names
- GBD
Global Burden of Disease GBD region names
- AVOIDnumeric
numeric codes for AVOID regions
- AVOIDname
AVOID regions
- LDC
UN Least Developed Countries
- SID
UN Small Island Developing states
- LLDC
UN Landlocked Developing Countries
Details
Joined onto vector country maps. Used by country2Region
and
mapByRegion
.
Examples
data(countryRegions,envir=environment(),package="rworldmap")
str(countryRegions)
#joining example data onto the regional classifications
data(countryExData,envir=environment(),package="rworldmap")
dF <- merge(countryExData,countryRegions,by.x='ISO3V10',by.y='ISO3')
#plotting ENVHEALTH for Least Developed Countries (LDC) against others
#plot( dF$ENVHEALTH ~ dF$LDC)
#points( y=dF$ENVHEALTH, x=dF$LDC)
Synonyms of country names for each ISO 3 letter country code to enable conversion.
Description
contains a variable number of synonyms (mostly English language) for each country
Format
A data frame with 281 observations on the following 10 variables.
- ID
a numeric vector
- ISO3
ISO 3 letter country code
- name1
country name - most common
- name2
country name - alternative
- name3
country name - alternative
- name4
country name - alternative
- name5
country name - alternative
- name6
country name - alternative
- name7
country name - alternative
- name8
country name - alternative
Details
This is used by joinCountryData2Map() when country names are used as the joinCode. Note that using ISO codes is preferable if they are available.
Source
This was derived and used with permission from the Perl Locale
package.
Locale::Codes::Country_Codes.
Thanks to Sullivan Beck for
pulling this together.
Data sources are acknowledged here :
http://search.cpan.org/~sbeck/Locale-Codes-3.23/lib/Locale/Codes/Country.pod
Examples
data(countrySynonyms)
A simple way to access maps stored in the package.
Description
A simple way to access maps stored in the package.
Usage
getMap(resolution = "coarse", projection = NA)
Arguments
resolution |
options "coarse","low","less islands","li","high". For "high" you need to install the package rworldxtra |
projection |
DEPRECATED OCTOBER 2012 to reproject maps see spTransform in rgdal |
Value
A SpatialPolygonsDataFrame object.
Author(s)
Barry Rowlingson & Andy South
Examples
plot(getMap())
A gloabl half degree grid specifying the country at each cell
Description
A grid covering the globe at half degree resolution, specifying the country (UN numeric code) at each cell.
Format
The format is:
Formal class 'SpatialGridDataFrame' [package "sp"] with 6 slots ..@ data :'data.frame': 259200 obs. of 1 variable: .. ..$ country.asc: num [1:259200] NA NA NA NA NA NA NA NA NA NA ... ..@ grid :Formal class 'GridTopology' [package "sp"] with 3 slots .. .. ..@ cellcentre.offset: num [1:2] -179.8 -89.8 .. .. ..@ cellsize : num [1:2] 0.5 0.5 .. .. ..@ cells.dim : int [1:2] 720 360 ..@ grid.index : int(0) ..@ coords : num [1:2, 1:2] -179.8 179.8 -89.8 89.8 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : NULL .. .. ..$ : chr [1:2] "coords.x1" "coords.x2" ..@ bbox : num [1:2, 1:2] -180 -90 180 90 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : chr [1:2] "coords.x1" "coords.x2" .. .. ..$ : chr [1:2] "min" "max" ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots .. .. ..@ projargs: chr " +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0"
Details
Uses a simple grid map defining a single country identity for each half degree cell. (sp, SpatialGridDataFrame), used by the function aggregateHalfDegreeGridToCountries()
Source
created from getMap(resolution='low')
Examples
data(gridCountriesDegreesHalf)
A gloabl half degree grid specifying the country at each cell
Description
A grid covering the globe at half degree resolution, specifying the country (UN numeric code) at each cell.
Format
The format is:
Formal class 'SpatialGridDataFrame' [package "sp"] with 6 slots ..@ data :'data.frame': 259200 obs. of 1 variable: .. ..$ country.asc: num [1:259200] NA NA NA NA NA NA NA NA NA NA ... ..@ grid :Formal class 'GridTopology' [package "sp"] with 3 slots .. .. ..@ cellcentre.offset: num [1:2] -179.8 -89.8 .. .. ..@ cellsize : num [1:2] 0.5 0.5 .. .. ..@ cells.dim : int [1:2] 720 360 ..@ grid.index : int(0) ..@ coords : num [1:2, 1:2] -179.8 179.8 -89.8 89.8 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : NULL .. .. ..$ : chr [1:2] "coords.x1" "coords.x2" ..@ bbox : num [1:2, 1:2] -180 -90 180 90 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : chr [1:2] "coords.x1" "coords.x2" .. .. ..$ : chr [1:2] "min" "max" ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots .. .. ..@ projargs: chr " +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0"
Details
Uses a simple grid map defining a single country identity for each half degree cell. (sp, SpatialGridDataFrame), used by the function aggregateHalfDegreeGridToCountries()
Source
IIASA
References
http://www.iiasa.ac.at/Research/GGI/DB/
Examples
data(gridCountriesNumeric)
Example half degree grid data : population estimates for 2000 from IIASA
Description
Example half degree grid data : people per cell estimates for 2000 from IIASA (International Institute for Applied System Analysis) (sp, SpatialGridDataFrame).
Format
The format is:
Formal class 'SpatialGridDataFrame' [package "sp"] with 6 slots ..@ data :'data.frame': 259200 obs. of 1 variable: .. ..$ pa2000.asc: num [1:259200] NA NA NA NA NA NA NA NA NA NA ... ..@ grid :Formal class 'GridTopology' [package "sp"] with 3 slots .. .. ..@ cellcentre.offset: num [1:2] -179.8 -89.8 .. .. ..@ cellsize : num [1:2] 0.5 0.5 .. .. ..@ cells.dim : int [1:2] 720 360 ..@ grid.index : int(0) ..@ coords : num [1:2, 1:2] -179.8 179.8 -89.8 89.8 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : NULL .. .. ..$ : chr [1:2] "coords.x1" "coords.x2" ..@ bbox : num [1:2, 1:2] -180 -90 180 90 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : chr [1:2] "coords.x1" "coords.x2" .. .. ..$ : chr [1:2] "min" "max" ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots .. .. ..@ projargs: chr " +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0"
Details
From International Institute for Applied System Analysis (IIASA) GGI Scenario Database, 2007 Available at: http://www.iiasa.ac.at/Research/GGI/DB/ The data are made available for individual, academic research purposes only and on a "as is" basis, subject to revisions without further notice. Commercial applications are not permitted.
The data is used as the default dataset in other functions, e.g. mapGriddedData(), when no data file is given.
Source
http://www.iiasa.ac.at/web-apps/ggi/GgiDb/dsd?Action=htmlpage&page=about
References
Grubler, A., O'Neill, B., Riahi, K., Chirkov, V., Goujon, A., Kolp, P., Prommer, I., Scherbov, S. & Slentoe, E. (2006) Regional, national and spatially explicit scenarios of demographic and economic change based on SRES. Technological Forecasting and Social Change doi:10.1016/j.techfore.2006.05.023
Examples
data(gridExData)
a function that will print country name and attribute values when a user clicks on the map
Description
An interactive function that will print on a map the nearest country name to a user mouse click. The user can specify nothing and the function will use a map from the package. Alternatively the user can specifiy a data frame or SpatialPolygonsDataFrame in which case they need to define the column containing the country names (nameCountryColumn) and optionally a 2nd attribute column to print (nameColumnToPlot).
Usage
identifyCountries(
dF = "",
nameCountryColumn = "NAME",
nameX = "LON",
nameY = "LAT",
nameColumnToPlot = "",
plotSelected = FALSE,
...
)
Arguments
dF |
data frame or SpatialPolygonsDataFrame |
nameCountryColumn |
name of column containing country names to be printed on the map (could also be set to any other attribute the user wants to query) |
nameX |
name of column containing the X variable (longitude), not needed if dF is a SpatialPolygonsDataFrame |
nameY |
name of column containing the Y variable (lattitude), not needed if dF is a SpatialPolygonsDataFrame |
nameColumnToPlot |
name of an attribute column in the data frame the value of which will be appended to the country name when it is printed |
plotSelected |
if set to TRUE a blue outline will be printed around the countries selected when the selection process is finished |
... |
other parameters that can be passed to identify() |
Details
Uses the identify() function, which waits for the user to click on the map, and stops when the user right clicks and selects 'stop'.
It uses country centroids, and will give a warning if one is too far away (default value of 0.25 inches).
Value
a vector of the indices of the countries selected
Author(s)
andy south
See Also
identify() labelCountries
Examples
#mapCountryData()
#identifyCountries()
#identifyCountries(nameColumnToPlot = "POP_EST", plotSelected = TRUE)
Returns the country name corresponding to the passed iso code (3 letter, 2 letter or numeric).
Description
Searches getMap()@data
to find the iso code. By default it returns the
string in the ADMIN column. By modifying nameColumn you can also get it to
return values from any other columns in getMap()@data
- see the examples.
Thus it can also be used to convert between ISO codes.
Usage
isoToName(iso = "", lookup = getMap()@data, nameColumn = "ADMIN")
Arguments
iso |
iso code to convert to a country name |
lookup |
the dataframe containing iso codes and country names |
nameColumn |
which column to get the name from, see examples |
Details
You could optionally provide a dataframe containing alternate iso conversions using lookup= . The passe dataframe would need to contain at least one of the following columns containing 2 letter, 3 letter or numeric iso codes respectively : ISO_A2, ISO_A3, ISO_N3.
Value
The country name (or other field) associated with the ISO code passed. NA is returned if no matching code is found.
Author(s)
Andy South
Examples
isoToName('gb')
isoToName('gbr')
isoToName(826)
isoToName('uk') #generates a warning and returns NA
#beware that using nameColumn may be vulnerable to future changes
#in column names in Natural Earth data
isoToName('gb',nameColumn='ABBREV') #returns abbreviation
isoToName('gb',nameColumn='ISO_A3') #returns iso3 for this iso2
isoToName('gbr',nameColumn='continent') #returns continent for this iso3
Joins user country referenced data to a map
Description
Joins user data referenced by country codes or names to an internal map,
ready for plotting using mapCountryData
. Reports join
successes and failures.
Usage
joinCountryData2Map(
dF,
joinCode = "ISO3",
nameJoinColumn = "ISO3V10",
nameCountryColumn = "Country",
suggestForFailedCodes = FALSE,
mapResolution = "coarse",
projection = NA,
verbose = FALSE
)
Arguments
dF |
R data frame with at least one column for country reference and one column of data |
joinCode |
how countries are referenced options "ISO2","ISO3","FIPS","NAME", "UN" = numeric codes |
nameJoinColumn |
name of column containing country referencing |
nameCountryColumn |
optional name of column containing country names (used in reporting of success/failure) |
suggestForFailedCodes |
NOT YET ENABLED T/F whether you want system to suggest for failed codes |
mapResolution |
resolution of the borders in the internal map, only for projection='none' : options 'low', 'medium' |
projection |
DEPRECATED JUNE 2012 |
verbose |
if set to FALSE it doesn't print progress messages to console |
Details
Joins data referenced by country codes to an internally stored map to enable
plotting. The user specifies which country code their data are referenced
by, and the name of the column in their data containing that referencing
data. The user can choose from different map resolutions, using the function
getMap
to retrieve the map. The function reports on how many
countries successfully join to the map. Data can then be plotted using
mapCountryData
. NEW to version 1.01 Oct 2012 : for
joinCode='NAME' alternative country names are matched using
countrySynonyms
.
The projection argument has now been deprecated, you can project maps using
package rgdal as shown below and in the FAQ.
library(rgdal)
#first
get countries excluding Antarctica which crashes spTransform
sPDF <-
getMap()[-which(getMap()$ADMIN=='Antarctica'),]
#transform to robin for
the Robinson projection
sPDF <- spTransform(sPDF, CRS=CRS("+proj=robin
+ellps=WGS84"))
mapCountryData( sPDF, nameColumnToPlot="REGION")
Value
An R 'SpatialPolygonsDataFrame' [package "sp"] object with the passed data joined to it
Author(s)
andy south
See Also
Examples
data("countryExData",envir=environment(),package="rworldmap")
sPDF <- joinCountryData2Map(countryExData
, joinCode = "ISO3"
, nameJoinColumn = "ISO3V10"
)
mapCountryData( sPDF
, nameColumnToPlot="BIODIVERSITY"
)
Joins user polygon attribute data to a map
Description
Joins user polygon attribute data to a map of polygon boundaries. The map
can either be one stored in the package or provided by the user. Returns a
spatialPolygonsDataFrame ready for plotting using mapPolys
.
Reports join successes and failures.
Usage
joinData2Map(
dF = "",
nameMap = "",
nameJoinIDMap = "ISO3",
nameJoinColumnData = "ISO3V10",
nameNameColumnData = "Country",
suggestForFailedCodes = FALSE,
projection = NA,
mapResolution = "coarse",
verbose = FALSE
)
Arguments
dF |
R data frame with at least one column of polygon IDs and one column of data |
nameMap |
the map to join the attribute data too |
nameJoinIDMap |
the name of the joinIDs in the map |
nameJoinColumnData |
name of column in the data containing country referencing |
nameNameColumnData |
optional name of column in the data containing polygon names (used in reporting of success/failure) |
suggestForFailedCodes |
NOT YET ENABLED T/F whether you want system to suggest for failed codes |
projection |
DEPRECATED JUNE 2012 |
mapResolution |
resolution of the borders in the internal map: options 'coarse','low', 'less islands' |
verbose |
if set to FALSE progress messages to console are restricted |
Details
Joins user polygon attribute data provided in a 'data frame' to a map of
polygon boundaries. The map can either be one stored in the package or
provided by the user. Returns a spatialPolygonsDataFrame ready for plotting
using mapPolys
. Reports join successes and failures.
The user specifies the name of the column in their data containing polygon referencing.
The user can choose from different internal map resolutions. Uses the
function getMap
to retrieve the map.
Value
An R 'SpatialPolygonsDataFrame' [package "sp"] object with the data joined to it
Author(s)
andy south
See Also
Examples
## this example uses downloaded files
## to run it download the files
## and remove the comment symbols '#' from all the lines starting with a single '#'
## US states map downloaded from :
## http://www2.census.gov/cgi-bin/shapefiles2009/national-files
#inFile <- 'tl_2009_us_stateec.shp'
#sPDF <- readShapePoly(inFile)
##################
## use mapPolys to map the sPDF
#mapPolys(sPDF,nameColumnToPlot = "ALANDEC")
#mapPolys(sPDF,nameColumnToPlot = "AWATEREC",mapRegion='North America')
##################
## join some other data to it
## education data downloaded from here as xls then saved as csv
## http://nces.ed.gov/ccd/drpcompstatelvl.asp
#dataFile <- 'SDR071A_xls.csv'
#dF <- read.csv(dataFile,as.is=TRUE)
#str(dF)
## STATENAME
## DRP912 Dropout Rate, Grades 9 through 12
## joining the data to the map
## based upon state names (column NAMEEC in map, and STATENAME in the data)
#sPDF2 <- joinData2Map(dF
# , nameMap = sPDF
# , nameJoinIDMap = "NAMEEC"
# , nameJoinColumnData = "STATENAME")
#################
## plot one of the attribute variables
#mapDevice()# to set nice shape map window
#mapPolys(sPDF2,nameColumnToPlot = "DRP912",mapRegion='North America')
to print country labels on a world map
Description
Given no arguments it will print country names stored in the 'NAME' column
of getMap
onto an existing map at the centroids of each
country polygon, stored in the 'LAT' and 'LON' columns. Alternatively the
user can specifiy a data frame or SpatialPolygonsDataFrame in which case
they need to define the column containing the country names
(nameCountryColumn) and optionally a 2nd attribute column to print
(nameColumnToPlot). First you need to create a map plot, for example using
mapCountryData
or mapBubbles
.
Usage
labelCountries(
dF = "",
nameCountryColumn = "NAME",
nameX = "LON",
nameY = "LAT",
nameColumnToPlot = "",
col = "grey",
cex = 0.8,
...
)
Arguments
dF |
dataframe or SpatialPolygonsDataFrame |
nameCountryColumn |
name of column containing country names to be printed on the map (could also be set to any other column in the dataframe) |
nameX |
name of column containing the X variable (longitude), not needed if dF is a SpatialPolygonsDataFrame |
nameY |
name of column containing the Y variable (lattitude), not needed if dF is a SpatialPolygonsDataFrame |
nameColumnToPlot |
name of an attribute column in the data frame the value of which will be appended to the country names |
col |
colour for labels, default 'grey', can be e.g. rgb(1,1,0,alpha=0.5) |
cex |
sizing of labels, default = 0.8 |
... |
other parameters that can be passed to text(), e.g. pos=4 to right, (1=below, 2=left, 3=above) |
Value
nothing
Author(s)
andy south
See Also
Examples
mapCountryData()
labelCountries()
labelCountries(nameColumnToPlot = "POP_EST")
function to produce bar plots on a map
Description
The function will produce a map with bars centred on country centroids (or other chosen points). The length of the bars is determined by the sum of the attribute columns and each section is coloured.
Usage
mapBars(
dF = "",
nameX = "longitude",
nameY = "latitude",
nameZs = c(names(dF)[3], names(dF)[4]),
zColours = c(1:length(nameZs)),
barWidth = 1,
barOrient = "vert",
barRelative = TRUE,
ratio = 1,
addCatLegend = TRUE,
addSizeLegend = TRUE,
symbolSize = 1,
maxZVal = NA,
xlim = NA,
ylim = NA,
mapRegion = "world",
borderCol = "grey",
oceanCol = NA,
landCol = NA,
add = FALSE,
main = "",
lwd = 0.5,
lwdSymbols = 1,
...
)
Arguments
dF |
data frame or SpatialPolygonsDataFrame |
nameX |
name of column containing the X variable (longitude), not needed if dF is a SpatialPolygonsDataFrame |
nameY |
name of column containing the Y variable (lattitude), not needed if dF is a SpatialPolygonsDataFrame |
nameZs |
name of columns containing numeric variables to determine bar sections |
zColours |
colours to apply to the bar section for each attribute column |
barWidth |
multiple for the width of bar symbols, relative to barOrient see below |
barOrient |
orientation of bars, options 'horiz' and 'vert' |
barRelative |
default is TRUE, each variable (column) is scaled to it's maximum value |
ratio |
the ratio of Y to N in the output map, set to 1 as default |
addCatLegend |
whether to add a legend for categories |
addSizeLegend |
whether to add a legend for symbol size |
symbolSize |
multiplier of default symbol size |
maxZVal |
the attribute value corresponding to the maximum symbol size, this can be used to set the scaling the same between multiple plots |
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
a country name from getMap()[['NAME']] or 'world','africa','oceania','eurasia','uk' sets map extents, overrides xlim,ylim |
borderCol |
the colour for country borders |
oceanCol |
a colour for the ocean |
landCol |
a colour to fill countries |
add |
whether to add the symbols to an existing map, TRUE/FALSE |
main |
title for the map |
lwd |
line width for country borders |
lwdSymbols |
line width for symbols |
... |
any extra arguments to points() |
Details
Horizontal or vertical bars can be achieved by using the barOrient argument 'horiz' or 'vert'.
Value
currently doesn't return anything
Author(s)
andy south
Examples
#getting example data
dF <- getMap()@data
mapBars( dF,nameX="LON", nameY="LAT",nameZs=c('POP_EST','GDP_MD_EST') )
mapBars( dF,nameX="LON", nameY="LAT",nameZs=c('POP_EST','GDP_MD_EST'), mapRegion='africa' )
mapBars( dF,nameX="LON", nameY="LAT",nameZs=c('POP_EST','GDP_MD_EST'),
mapRegion='africa', symbolSize=20 )
mapBars( dF,nameX="LON", nameY="LAT",nameZs=c('POP_EST','GDP_MD_EST'), mapRegion='africa',
symbolSize=20, barOrient = 'horiz' )
# this does work too
#mapBars( dF,nameX="LON", nameY="LAT"
# , nameZs=c('POP_EST','GDP_MD_EST')
# , mapRegion='africa'
# , symbolSize=4 )
function to produce bubble plots on a map, size and colour determined by attribute data
Description
The function will produce a map with bubbles (circles) centred on country centroids (or other chosen points). Bubbles can be sized and coloured according to specified attribute values.
Usage
mapBubbles(
dF = "",
nameX = "longitude",
nameY = "latitude",
nameZSize = "",
nameZColour = "",
fill = TRUE,
pch = 21,
symbolSize = 1,
maxZVal = NA,
main = nameZSize,
numCats = 5,
catMethod = "categorical",
colourPalette = "heat",
xlim = NA,
ylim = NA,
mapRegion = "world",
borderCol = "grey",
oceanCol = NA,
landCol = NA,
addLegend = TRUE,
legendBg = "white",
legendVals = "",
legendPos = "bottomright",
legendHoriz = FALSE,
legendTitle = nameZSize,
addColourLegend = TRUE,
colourLegendPos = "bottomleft",
colourLegendTitle = nameZColour,
add = FALSE,
plotZeroVals = TRUE,
lwd = 0.5,
lwdSymbols = 1,
...
)
Arguments
dF |
data frame or SpatialPolygonsDataFrame |
nameX |
name of column containing the X variable (longitude), not needed if dF is a SpatialPolygonsDataFrame |
nameY |
name of column containing the Y variable (lattitude), not needed if dF is a SpatialPolygonsDataFrame |
nameZSize |
name of column containing numeric variable to set symbol size |
nameZColour |
name of column containing variable to set symbol colour |
fill |
whether or not to fill symbols TRUE/FALSE |
pch |
symbol type, default of 21 for circles, will work with other filled symbol types e.g. 22=square, 23=diamond, 24=triangle |
symbolSize |
multiplier of default symbol size |
maxZVal |
the attribute value corresponding to the maximum symbol size, this can be used to set the scaling the same between multiple plots |
main |
title for the map, set to nameZSize by default |
numCats |
number of categories to put the data in, may be modified if this number is incompatible with the catMethod chosen |
catMethod |
method for categorisation of data "pretty", "fixedWidth", "diverging", "logFixedWidth", "quantiles", "categorical", or a numeric vector defining breaks |
colourPalette |
a string describing the colour palette to use, choice of :
|
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
a country name from getMap()$NAME or 'world','africa','oceania','eurasia','uk' sets map extents, overrides xlim,ylim |
borderCol |
the colour for country borders |
oceanCol |
a colour for the ocean |
landCol |
a colour to fill countries |
addLegend |
whether to add a legend for symbol sizes |
legendBg |
background colour for the legend, NA=transparent |
legendVals |
allows user to set values and hence symbol sizing in legend |
legendPos |
positioning of legend e.g. 'bottomleft', 'topright' |
legendHoriz |
whether to arrange legend elements horizontally TRUE/FALSE |
legendTitle |
title for the symbol size legend |
addColourLegend |
whether to add a legend for symbol colour |
colourLegendPos |
positioning of colour legend e.g. 'bottomleft', 'topright' |
colourLegendTitle |
title for the colour size legend |
add |
whether to add the symbols to an existing map, TRUE/FALSE |
plotZeroVals |
whether to plot zero values as a cross, TRUE/FALSE |
lwd |
line width for country borders |
lwdSymbols |
line width for symbols |
... |
any extra arguments to points() |
Details
By default separate legends are added fro symbol size and colouring on either side of the plot, these can be modified by altering legend parameters.
Value
currently doesn't return anything
Author(s)
andy south
Examples
mapBubbles()
#square symbols
mapBubbles(pch=22)
mapBubbles(dF=getMap(), nameZSize="POP_EST", nameZColour="GEO3")
#change colour
mapBubbles(dF=getMap(), nameZSize="POP_EST", nameZColour="GEO3"
,colourPalette='rainbow', oceanCol='lightblue', landCol='wheat')
data("countryExData",envir=environment(),package="rworldmap")
sPDF <- joinCountryData2Map(countryExData,joinCode = "ISO3"
,nameJoinColumn = "ISO3V10")
mapBubbles(sPDF, nameZSize="POP_EST",nameZColour="BIODIVERSITY"
,colourPalette='topo',numCats=5,catMethod="quantiles")
#filled bubbles with set transparency
mapBubbles(fill=TRUE,colourPalette=adjustcolor(palette(), alpha.f = 0.5))
#add bubble edge of a single colour (also with option to set transparency
mapBubbles(nameZColour = adjustcolor('black', alpha.f = 0.7), fill=FALSE, add=TRUE)
Produce maps of regional level data from country level data
Description
This function will produce maps of regional statistics by aggregating country level data. For example mapping the total population of Asia, Europe,etc, from country level population data. As well as sums, other functions can be used, like mean, median, min, max, etc. There are currently 8 choices of region and 4 choices of country code.
Usage
mapByRegion(
inFile,
nameDataColumn,
joinCode,
nameJoinColumn,
regionType = "",
FUN = "mean",
na.rm = TRUE,
mapTitle = "",
lwd = 0.5,
...
)
Arguments
inFile |
a data frame |
nameDataColumn |
The name of a column of inFile. This is data is aggregated by FUN |
joinCode |
The type of code to join with. Must be one of: "ISO2", "ISO3", "Numeric" or "FIPS" |
nameJoinColumn |
The name of a column of inFile. Contains joining codes. |
regionType |
Must be one of: "GEO3", "GEO3major", "IMAGE24", "GLOCAF", "Stern", "SRES", "SRESmajor","GBD","AVOIDname" |
FUN |
A function to apply to each region |
na.rm |
Only used for certain values of FUN. See details section below. |
mapTitle |
a title to be printed above the map |
lwd |
line width for country borders |
... |
further arguments to be passed to |
Details
The function is very similar to country2Region. The first difference is that the output is a map, rather than statistics. The second is the behaviour of extra arguments. In country2Region the extra arguments go to FUN, here they go to mapCountryData.
The na.rm argument is used when FUN has one of the following values: "mean", "min", "max", "median", "range", "var", "sd", "mad" or "IQR". This reduces the problem of not being able to supply extra arguments to FUN.
Value
invisibly returns a list containing the data and main options used
for the map, the list can be passed to addMapLegend
along with
additional options to allow greater flexibility in legend creation.
See Also
An alternative tool to country2Region
. The plotting
is done by mapCountryData
Examples
data(countryExData)
mapByRegion(inFile=countryExData
,nameDataColumn="CLIMATE"
,joinCode="ISO3"
,nameJoinColumn="ISO3V10"
,regionType="Stern"
,FUN='mean'
)
Map country-level data.
Description
Draw a map of country-level data, allowing countries to be coloured, from an
object created in joinCountryData2Map
.
Usage
mapCountryData(
mapToPlot = "",
nameColumnToPlot = "",
numCats = 7,
xlim = NA,
ylim = NA,
mapRegion = "world",
catMethod = "quantiles",
colourPalette = "heat",
addLegend = TRUE,
borderCol = "grey",
mapTitle = "columnName",
oceanCol = NA,
aspect = 1,
missingCountryCol = NA,
add = FALSE,
nameColumnToHatch = "",
lwd = 0.5
)
Arguments
mapToPlot |
a spatial polygons dataframe from joinCountryData2Map() containing country polygons and data, if none specified an internal example data is used |
nameColumnToPlot |
name of column containing the data you want to plot |
numCats |
number of categories to put the data in, may be modified if this number is incompatible with the catMethod chosen |
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
a country name from getMap()[['NAME']] or 'world','africa','oceania','eurasia','uk' sets map extents, overrides xlim,ylim |
catMethod |
method for categorisation of data :
|
colourPalette |
string describing the colour palette to use, choice of:
|
addLegend |
whether to add a legend or not |
borderCol |
the colour for country borders |
mapTitle |
title to add to the map, any string or 'columnName' to set it to the name of the data column |
oceanCol |
a colour for the ocean |
aspect |
aspect for the map, defaults to 1, if set to 'variable' uses same method as plot.Spatial in sp |
missingCountryCol |
a colour for missing countries |
add |
whether to add this map on top of an existing map, TRUE/FALSE |
nameColumnToHatch |
allows hatching of country fills (e.g. to represent uncertainty) , specify a column containing numeric data , highest values will be solid and lower values will have a decreasing density of hatching , new feature more documentation will be added soon |
lwd |
line width for country borders |
Details
Certain catMethod and colourPalette options go well together. e.g. "diverging" and "diverging", "categorical" and "rainbow"
There are two styles of legend available. If catMethod='categorical' or the
packages fields and spam are not installed a simple legend with coloured
boxes is created. Otherwise a colour bar legend is created. Finer control
can be achieved by addMapLegendBoxes
or
addMapLegend
repectively.
Value
invisibly returns a list containing the data and main options used
for the map, the list can be passed to addMapLegend
or
addMapLegendBoxes
along with additional options to allow
greater flexibility in legend creation.
Warning
will generate unhelpful errors in data categorisation if inappropriate options are chosen, e.g. with catMethod:Quantiles if numCats too high so that unique breaks cannot be defined.
Author(s)
andy south
See Also
classInt, RColorBrewer
Examples
mapCountryData()
data("countryExData",envir=environment(),package="rworldmap")
sPDF <- joinCountryData2Map(countryExData
, joinCode = "ISO3"
, nameJoinColumn = "ISO3V10"
)
mapCountryData( sPDF
, nameColumnToPlot="BIODIVERSITY"
)
#user defined map colour scheme for categorical data
mapParams <- mapCountryData(nameColumnToPlot='GEO3major'
, catMethod='categorical'
, addLegend='FALSE'
, colourPalette=c('white','green','red','yellow','blue','black')
)
#changing legendText
mapParams$legendText <- c('antarctic','africa','oceania'
,'americas','s.asia','eurasia')
do.call( addMapLegendBoxes, c(mapParams,x='bottom',title="Region",horiz=TRUE))
##showing how rworldmap can be used with the classInt and RColorBrewer packages
library(classInt)
library(RColorBrewer)
#getting example data and joining to a map
data("countryExData",envir=environment(),package="rworldmap")
sPDF <- joinCountryData2Map(countryExData,joinCode = "ISO3"
,nameJoinColumn = "ISO3V10")
#getting class intervals using a 'jenks' classification in classInt package
classInt <- classIntervals( sPDF$EPI, n=5, style="jenks")
catMethod = classInt$brks
#getting a colour scheme from the RColorBrewer package
colourPalette <- brewer.pal(5,'RdPu')
#calling mapCountryData with the parameters from classInt and RColorBrewer
mapParams <- mapCountryData( sPDF, nameColumnToPlot="EPI", addLegend=FALSE
, catMethod = catMethod, colourPalette=colourPalette )
do.call(addMapLegend, c(mapParams
,legendLabels="all"
,legendWidth=0.5
,legendIntervals="data"))
Creates a plot device set up for maps
Description
Creates a plot device suited for rworldmap plotting functions.
Usage
mapDevice(
device = "dev.new",
rows = 1,
columns = 1,
plotOrder = "rows",
width = NULL,
height = NULL,
titleSpace = NULL,
mai = c(0, 0, 0.2, 0),
mgp = c(0, 0, 0),
xaxs = "i",
yaxs = "i",
...
)
Arguments
device |
Character string which controls the type of plot default. The default uses your standard plot device. Giving the name of a plotting device function will use that instead. e.g. "pdf", "png", etc. |
rows |
The number of rows. Default 1 |
columns |
The number of columns. Default 1 |
plotOrder |
Option of 'rows' or 'columns'. For multiple plots whether to plot in row or column order. However, note that addMapLegend can have the effect of reverting order to rows. |
width |
The width of a single plot. This includes the margins. If you do not specify both width and height, suitable values will be calculated |
height |
The height of a single plot. This includes the margins. If you do not specify both width and height, suitable values will be calculated |
titleSpace |
The height in inches of the gap at the plot. |
mai |
The margin sizes in inches. If titleSpace is given this overrides mai[3]. |
mgp |
As per par(mgp) in the graphics package |
xaxs |
As per par(xaxs) in the graphics package |
yaxs |
As per par(yaxs) in the graphics package |
... |
Further arguments to the device function |
Value
Used for the side effect of creating a plot device, and setting graphical parameters for the device.
See Also
mapCountryData,mapGridAscii
Examples
## Not run:
#Basic Usage
mapDevice()
mapCountryData()
#2 by 2 plot
mapDevice(rows=2,columns=2)
columns<-c("BIODIVERSITY","EPI","ENVHEALTH","Population2005")
for(i in columns){
mapCountryData(nameColumnToPlot=i)
}
#Creating a pdf that is 5 inches wide
mapDevice(device="pdf",width=5,file=tempfile())
mapCountryData()
dev.off()
## End(Not run)
Produce maps of global gridded data at half degree resolution
Description
Produce maps of global gridded data at half degree resolution
Usage
mapGriddedData(
dataset = "",
nameColumnToPlot = "",
numCats = 5,
catMethod = "quantiles",
colourPalette = "heat",
xlim = c(-180, 180),
ylim = c(-80, 90),
mapRegion = "world",
addLegend = TRUE,
addBorders = "coarse",
borderCol = "grey",
oceanCol = NA,
landCol = NA,
plotData = TRUE,
aspect = 1,
lwd = 1
)
Arguments
dataset |
gridded data either as a :
|
nameColumnToPlot |
name of column containing the data to plot |
numCats |
number of categories to put the data in, may be overidden if catMethod ='pretty' |
catMethod |
method for categorisation of data "pretty", "fixedWidth","diverging", "logFixedWidth","quantiles","categorical", or a numeric vector defining breaks |
colourPalette |
a string describing the colour palette to use, choice of :
|
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
a country name from getMap()[['NAME']] or 'world','africa','oceania','eurasia','uk' sets map extents, overrides xlim,ylim |
addLegend |
whether to add a legend or not |
addBorders |
options for country borders, 'low','coarse' = low or coarse resolution, 'coasts' = coasts only, 'none' or NA for none |
borderCol |
the colour for country borders |
oceanCol |
a colour for the ocean if the grid values are NA |
landCol |
a colour to fill countries if the grid values are NA over land |
plotData |
whether to plotData, if FALSE a legend can be added on its own |
aspect |
aspect for the map, defaults to 1, if set to 'variable' uses same method as plot.Spatial in sp |
lwd |
line width for country borders |
Details
Plots a map of global half degree gridded data, allowing classification, colours and regions to be set.
Certain catMethod and colourPalette options go well together. e.g. "diverging" and "diverging", "categorical" and "rainbow"
Value
invisibly returns a list containing the data and main options used
for the map, the list can be passed to addMapLegend
along with
additional options to allow greater flexibility in legend creation.
Author(s)
andy south #@importFrom maptools readAsciiGrid
See Also
classInt, RColorBrewer
Examples
## mapping continuous data
data(gridExData,envir=environment(),package="rworldmap")
gridExData <- get("gridExData")
mapGriddedData(gridExData)
## reclassing continuous data to categorical & mapping
data(gridExData,envir=environment(),package="rworldmap")
#find quartile breaks
cutVector <- quantile(gridExData@data[,1],na.rm=TRUE)
#classify the data to a factor
gridExData@data$categories <- cut( gridExData@data[,1]
, cutVector, include.lowest=TRUE)
#rename the categories
levels(gridExData@data$categories) <- c('low', 'med', 'high', 'vhigh')
#mapping
mapGriddedData( gridExData, nameColumnToPlot= 'categories'
, catMethod='categorical')
Maps user half degree gridded data at country level by first aggregating.
Description
Maps user half degree gridded data at country level by first aggregating.
Usage
mapHalfDegreeGridToCountries(
inFile = "",
aggregateOption = "sum",
nameCountryColumn = "",
suggestForFailedCodes = FALSE,
projection = NA,
mapResolution = "low",
numCats = 7,
xlim = c(-160, 160),
ylim = c(-80, 90),
mapRegion = "world",
catMethod = "quantiles",
colourPalette = "heat",
addLegend = TRUE,
lwd = 0.5
)
Arguments
inFile |
either a gridascii filename or an sp SpatialGridDataFrame object specifying a global half degree grid dataset, if none specified an internal example data is used |
aggregateOption |
how to aggregate the data ('sum','mean','min','max') |
nameCountryColumn |
optional name of column containing country names (used in reporting of success/failure) |
suggestForFailedCodes |
T/F whether you want system to suggest for failed codes NOT YET WORKING |
projection |
deprecated june 2012 |
mapResolution |
options low, medium, only for projection='none' initially |
numCats |
number of categories, may be overided e.g. if catMethod ='pretty' |
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
'world','africa','oceania','eurasia','uk' sets map extents, overrides we,ea etc. |
catMethod |
method for categorisation of data "pretty", any vector defining breaks, "fixedWidth","quantiles" |
colourPalette |
"heat","white2Black","palette":for current palette |
addLegend |
whether to add a legend or not T/F |
lwd |
line width for country borders |
Details
Aggregates half degree gridded data to countries using the option specified in 'aggregateOption' then maps at a country level.
Value
invisibly returns a list containing the data and main options used
for the map, the list can be passed to addMapLegend
along with
additional options to allow greater flexibility in legend creation.
Author(s)
andy south #@importFrom maptools readAsciiGrid
See Also
aggregateHalfDegreeGridToCountries
Examples
data(gridExData,envir=environment(),package="rworldmap")
gridExData <- get("gridExData")
mapHalfDegreeGridToCountries(gridExData)
#different aggregate option
mapHalfDegreeGridToCountries( gridExData, aggregateOption="mean" )
function to produce pie charts on a map
Description
The function will produce a map with pie charts centred on country centroids (or other chosen points). The size of the circles is determined by the sum of the attribute columns and each section is coloured.
Usage
mapPies(
dF,
nameX = "LON",
nameY = "LAT",
nameZs = c(names(dF)[3], names(dF)[4]),
zColours = c(1:length(nameZs)),
ratio = 1,
addCatLegend = TRUE,
symbolSize = 1,
maxZVal = NA,
xlim = NA,
ylim = NA,
mapRegion = "world",
borderCol = "grey",
oceanCol = NA,
landCol = NA,
add = FALSE,
main = "",
lwd = 0.5,
...
)
Arguments
dF |
data frame or SpatialPolygonsDataFrame |
nameX |
name of column containing the X variable (longitude), not needed if dF is a SpatialPolygonsDataFrame |
nameY |
name of column containing the Y variable (latitude), not needed if dF is a SpatialPolygonsDataFrame |
nameZs |
name of columns containing numeric variables to determine pie sections |
zColours |
colours to apply to the pie section for each attribute column |
ratio |
the ratio of Y to N in the output map, set to 1 as default |
addCatLegend |
whether to add a legend for categories |
symbolSize |
multiplier of default symbol size |
maxZVal |
the attribute value corresponding to the maximum symbol size, this can be used to set the scaling the same between multiple plots |
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
a country name from getMap()[['NAME']] or 'world','africa','oceania','eurasia','uk' sets map extents, overrides xlim,ylim |
borderCol |
the colour for country borders |
oceanCol |
a colour for the ocean |
landCol |
a colour to fill countries |
add |
whether to add the symbols to an existing map, TRUE/FALSE |
main |
title for the map |
lwd |
line width for country borders |
... |
any extra arguments to points() |
Details
Beware of creating plots that are difficult for the reader to interpret. More than 3 or 4 categories may be too many.
Value
currently doesn't return anything
Author(s)
andy south
Examples
#getting example data
dF <- getMap()@data
## these examples repeat the same column in 'nameZs'
## to show that equal sized pies are created
#mapPies( dF,nameX="LON", nameY="LAT",nameZs=c('AREA','AREA') )
#mapPies( dF,nameX="LON", nameY="LAT",nameZs=c('AREA','AREA')
# , mapRegion='africa' )
mapPies( dF,nameX="LON", nameY="LAT"
, nameZs=c('POP_EST','POP_EST','POP_EST','POP_EST'),mapRegion='africa' )
Map polygon data.
Description
Plot a map of polygons, from a spatialPolygonsDataFrame, coloured according to one a specified attribute column.
Usage
mapPolys(
mapToPlot = "",
nameColumnToPlot = "",
numCats = 7,
xlim = NA,
ylim = NA,
mapRegion = "world",
catMethod = "quantiles",
colourPalette = "heat",
addLegend = TRUE,
borderCol = "grey",
mapTitle = "columnName",
oceanCol = NA,
aspect = 1,
missingCountryCol = NA,
add = FALSE,
lwd = 0.5
)
Arguments
mapToPlot |
a spatial polygons dataframe (e.g. from joinData2Map()) containing polygons and associated data, if none specified an internal example data is used |
nameColumnToPlot |
name of column containing the data you want to plot |
numCats |
number of categories to put the data in, may be modified if this number is incompatible with the catMethod chosen |
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
mapRegion |
a country name from getMap()[['NAME']] or 'world','africa','oceania','eurasia','uk' sets map extents, overrides xlim,ylim |
catMethod |
for categorisation of data "pretty", "fixedWidth", "diverging", "logFixedWidth", "quantiles", "categorical", or a numeric vector defining breaks |
colourPalette |
string describing the colour palette to use, choice of:
|
addLegend |
whether to add a legend or not |
borderCol |
the colour for country borders |
mapTitle |
title to add to the map, any string or 'columnName' to set it to the name of the data column |
oceanCol |
a colour for the ocean |
aspect |
aspect for the map, defaults to 1, if set to 'variable' uses same method as plot.Spatial in sp |
missingCountryCol |
a colour for missing countries |
add |
whether to add this map on top of an existing map, TRUE/FALSE |
lwd |
line width for country borders |
Details
Certain catMethod and colourPalette options go well together. e.g. "diverging" and "diverging", "categorical" and "rainbow"
There are two styles of legend available. If catMethod='categorical' or the
packages fields and spam are not installed a simple legend with coloured
boxes is created. Otherwise a colour bar legend is created. Finer control
can be achieved by addMapLegendBoxes
or
addMapLegend
repectively.
Value
invisibly returns a list containing the data and main options used
for the map, the list can be passed to addMapLegend
or
addMapLegendBoxes
along with additional options to allow
greater flexibility in legend creation.
Author(s)
andy south
See Also
joinData2Map, classInt, RColorBrewer
Examples
## this example uses downloaded files
## to run it download the files
## and remove the comment symbols '#' from all the lines starting with a single '#'
## US states map downloaded from :
## http://www2.census.gov/cgi-bin/shapefiles2009/national-files
#inFile <- 'tl_2009_us_stateec.shp'
#sPDF <- readShapePoly(inFile)
#str(sPDF@data)
##################
## use mapPolys to map the sPDF
#mapPolys(sPDF,nameColumnToPlot = "ALANDEC")
#mapPolys(sPDF,nameColumnToPlot = "AWATEREC",mapRegion='North America')
##################
## join some other data to it
## education data downloaded from here as xls then saved as csv
## http://nces.ed.gov/ccd/drpcompstatelvl.asp
#dataFile <- 'SDR071A_xls.csv'
#dF <- read.csv(dataFile,as.is=TRUE)
#str(dF)
## STATENAME
## DRP912 Dropout Rate, Grades 9 through 12
## joining the data to the map
## based upon state names (column NAMEEC in map, and STATENAME in the data)
#sPDF2 <- joinData2Map(dF
# , nameMap = sPDF
# , nameJoinIDMap = "NAMEEC"
# , nameJoinColumnData = "STATENAME")
#################
## plot one of the attribute variables
#mapDevice()# to set nice shape map window
#mapPolys(sPDF2,nameColumnToPlot = "DRP912",mapRegion='North America')
#################
###to map US counties data (Tiger) downloaded from :
##http://www2.census.gov/cgi-bin/shapefiles2009/national-files
#inFile <- 'tl_2009_us_county.shp'
#sPDF <- readShapePoly(inFile)
#str(sPDF@data)
#mapPolys(sPDF,nameColumnToPlot='AWATER',xlim=c(-140,-65), ylim=c(25,45))
internal function to check and load input data to mapping functions
Description
Internal function checking and loading dFs or sPDFs to
mapCountryData
, mapPolys
, mapPies
,
mapBubbles
, mapBars
.
Usage
rwmCheckAndLoadInput(
inputData = "",
inputNeeded = "sPDF",
callingFunction = ""
)
Arguments
inputData |
a dF, sPDF or "", for latter an internal example data is used |
inputNeeded |
"sPDF", "sPDF or dF", "dF" |
callingFunction |
optional : name of the calling function |
Details
a rworldmap internal function, unlikely to be of use to users
Value
invisibly returns a dF or sPDF
Author(s)
andy south
Internal function to set the numeric values for the breaks between data categories
Description
Sets the values that determine how a vector of continuous data is classified into categories. Called by mapCountryData() and mapGriddedData()
Usage
rwmGetClassBreaks(dataColumn, catMethod, numCats, verbose = TRUE, midpoint = 0)
Arguments
dataColumn |
the data vector to be classified, must be numeric |
catMethod |
the method to use to classify the data into categories, choice of "pretty", "fixedWidth", "diverging", "logFixedWidth","quantiles","categorical" or a numeric vector defining breaks |
numCats |
number of categories to put the data in, may be overidden if not possible under some classification methods |
verbose |
whether to print information messages to console TRUE/FALSE |
midpoint |
the midpoint to use if catMethod='diverging', default=0 |
Value
A vector specifying the numeric breaks between data categories.
Author(s)
andy south and matthew staines
See Also
The classInt package
to choose map colours for classified data
Description
Returns a vector of colours based upon the palette specified and number of colours specified. If colourPalette specifies a number of colours and this is different from numColours, numColours takes precedence and colours are interpolated to make the number fit.
Usage
rwmGetColours(colourPalette, numColours)
Arguments
colourPalette |
string describing the colour palette to use, choice of:
|
numColours |
the number of colour categories desired |
Value
A vector specifiying a number of colours.
Internal function for getting the ISO3 country code for a country name synonymn.
Description
Searches countrySynonyms to get the ISO3 code. If the name is not found NA is returned. Allows joining of imperfect names to other country data in joinCountryData2Map( joinCode='NAME' )
Usage
rwmGetISO3(oddName)
Arguments
oddName |
country name that user wishes to find code for |
Value
the ISO3 code (3 letters) corresponding to the country name passed, or NA if one is not found
Author(s)
Andy South
References
This was derived and used with permission from the Perl Locale
package.
Locale::Codes::Country_Codes.
Thanks to Sullivan Beck for
pulling this together.
Data sources are acknowledged here :
http://search.cpan.org/~sbeck/Locale-Codes-3.23/lib/Locale/Codes/Country.pod
Examples
rwmGetISO3("vietnam")
Internal function to set up an existing device for plotting maps
Description
Sets the region, aspect and ocean colour for a new map plot
Usage
rwmNewMapPlot(
mapToPlot = getMap(),
oceanCol = NA,
mapRegion = "world",
xlim = NA,
ylim = NA,
aspect = 1
)
Arguments
mapToPlot |
the worldmap to be plotted |
oceanCol |
a colour for the ocean |
mapRegion |
a string specifying the map region, see setMapExtents() |
xlim |
map extents c(west,east), can be overidden by mapRegion |
ylim |
map extents c(south,north), can be overidden by mapRegion |
aspect |
aspect for the map, defaults to 1, if set to 'variable' uses same default as plot.Spatial in sp |
Details
Called by mapCountryData() and mapGriddedData()
Value
a dataframe containing xlim and ylim
Author(s)
andy south
Example code for plot creation
Description
Example code to demonstrate creation of a series of plots
Usage
rworldmapExamples()
Author(s)
andy south
Internal function allowing map extents to be set from area names
Description
Allows map extents to be set from country or area names (e.g. India, Africa )
Usage
setMapExtents(mapRegion = "world")
Arguments
mapRegion |
a country name from getMap()[['NAME']] or one of 'eurasia','africa','latin america','uk','oceania','asia' |
Details
Can be called by mapCountryData
and
mapGriddedData
Value
a dataframe containing we,ea,so,no values in degrees between -180 & +180
Author(s)
andy south
Examples
mapCountryData( mapRegion='Africa' )
mapCountryData( mapRegion='India' )