mapHalfDegreeGridToCountries
From rworldmap v1.3-6
by Andy South
Maps user half degree gridded data at country level by first aggregating.
Maps user half degree gridded data at country level by first aggregating.
- Keywords
- aplot
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.
See Also
Examples
data(gridExData,envir=environment(),package="rworldmap")
gridExData <- get("gridExData")
mapHalfDegreeGridToCountries(gridExData)
#different aggregate option
mapHalfDegreeGridToCountries( gridExData, aggregateOption="mean" )
Community examples
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