KML: Write a KML or KMZ file

In raster: Geographic Data Analysis and Modeling

Description

Export raster data to a KML file and an accompanying PNG image file. Multi-layer objects can be used to create an animation. The function attempts to combine these into a single (and hence more convenient) KMZ file (a zip file containing the KML and PNG files).

See package plotKML for more advanced functionality

Usage

## S4 method for signature 'RasterLayer'
KML(x, filename, col=rev(terrain.colors(255)), 
     colNA=NA, maxpixels=100000, blur=1, zip='', overwrite=FALSE, ...)

## S4 method for signature 'RasterStackBrick'
KML(x, filename, time=NULL, col=rev(terrain.colors(255)), 
     colNA=NA, maxpixels=100000, blur=1, zip='', overwrite=FALSE, ...)

## S4 method for signature 'Spatial'
KML(x, filename, zip='', overwrite=FALSE, ...)

Arguments

x	Raster* object
filename	output filename
time	character vector with time lables for multilayer objects. The length of this vector should be nlayers(x) to indicate "when" or nlayers(x)+1 to indicate "begin-end"
col	color scheme to be used (see image)
colNA	The color to use for the background (default is transparent)
maxpixels	maximum number of pixels. If ncell(raster) > maxpixels, sampleRegular is used to reduce the number of pixels
blur	Integer (default=1). Higher values help avoid blurring of isolated pixels (at the expense of a png file that is blur^2 times larger)
zip	If there is no zip program on your path (on windows), you can supply the full path to a zip.exe here, in order to make a KMZ file
overwrite	logical. If TRUE, overwrite the file if it exists
...	If x is a Raster* object, additional arguments that can be passed to image

Value

None. Used for the side-effect files written to disk.

Author(s)

This function was adapted for the raster package by Robert J. Hijmans, with ideas from Tony Fischbach, and based on functions in the maptools package by Duncan Golicher, David Forrest and Roger Bivand.

Examples

## Not run: 
# Meuse data from the sp package
data(meuse.grid)
b <- rasterFromXYZ(meuse.grid)
projection(b) <- "+init=epsg:28992" 				  
# transform to longitude/latitude
p <- projectRaster(b, crs="+proj=longlat +datum=WGS84", method='ngb')
KML(p, file='meuse.kml')

## End(Not run)

Example output

sh: 1: cannot create /dev/null: Permission denied
Loading required package: sp
sh: 1: awk: Permission denied
Warning message:
In showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum Amersfoort in CRS definition
sh: 1: awk: Permission denied
sh: 1: awk: Permission denied
sh: 1: awk: Permission denied
sh: 1: awk: Permission denied
sh: 1: awk: Permission denied
sh: 1: /usr/bin/zip: Permission denied
Warning message:
In system(cmd, intern = TRUE) :
  running command '/usr/bin/zip meuse.kmz meuse.kml meuse_1.png meuse_2.png meuse_3.png meuse_4.png meuse_5.png' had status 126

raster documentation built on Jan. 5, 2021, 3:01 a.m.