raster algebra in R
You can try the raster package, available from R-forge:
install.packages("raster", repos="http://R-Forge.R-project.org")
It has very simple raster algebra
r1 <- raster('myfile1.asc')
r2 <- raster('myfile2.asc')
r3 <- r1 + sqrt(r2) + 1
etc.
Robert
On Fri, Jul 31, 2009 at 11:21 AM, Jason Robinson<litobrancha at yahoo.com> wrote:
I need to do some raster algebra on some large rasters. ?right now they are ascii files. ?I'm a complete R novice. ?Can anyone point me towards a good source for figuring out how to get my data into R and how to do very simple raster manipulations? ?no advice is too simple for this guy. ?appreciate any help that is out there Jason Robinson
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