Clipping raster by polygon
Hi Joseph,
I wrote a function that you can use to clip every raster object with any
polygon within the raster package.
######################################
clip<-function(raster,shape) {
a1_crop<-crop(raster,shape)
step1<-rasterize(shape,a1_crop)
a1_crop*step1}
######################################
Much success.
Carsten
On 07/17/2013 07:02 PM, Robert J. Hijmans wrote:
Joseph, Perhaps you can use raster function crop, perhaps followed by mask. Robert On Wed, Jul 17, 2013 at 8:31 AM, Joseph Miller <jemiller31 at gmail.com> wrote:
Hello-
I am trying to clip a raster with a Spatial Polygons Data Frame (esri
shapefile). I reviewed the rgeos package documentation but could not find
an adequate tool to do this. Suggestions?
Thanks,
Joseph
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Carsten Neumann Telegrafenberg, A 17 01.13 14473 Potsdam ------------------------------------------------------- Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences Department 1 - Section 1.4 - Remote Sensing ------------------------------------------------------- Tel.: +49 (0) 331 288 1766 e-mail: carstenn at gfz-potsdam.de