Hi everyone
I want to know how to iteratively assign names to rasters as I generate them,
taking those names from a vector of preset names.
For example, say I have a list of the names I want my rasters to inherit. ie
> raster.names<-paste("d",1:8,sep="")
> raster.names
[1] "d1" "d2" "d3" "d4" "d5" "d6" "d7" "d8"
Now I take a raster. eg
> library(raster)
> x<-raster()
> x
class : RasterLayer
dimensions : 180, 360, 64800 (nrow, ncol, ncell)
resolution : 1, 1 (x, y)
extent : -180, 180, -90, 90 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84
I can iteratively crop random sections from the raster eg
for(i in 1:8){
> r<-sort(sample(1:180,2,replace=F))
> c<-sort(sample(1:360,2,replace=F))
> out<-crop(x,extent(x,r1=r[1],r2=r[2],c1=c[1],c=c[2]))
}
My question is this. Instead of saving each random crop as "out" in each
iteration (and thus overwriting the previous iteration of "out"), how do I save
sequential iterations with those names listed in raster.names. So for example
in the first loop "out" would be saved as an object called d1, in the second as
an object called d2 etc. Just to be clear, the random cropping here is just to
serve an example, my real interest is in how I permanently keep rasters I
generate from an iterative process under names I choose for them.
Thanks for any help.
> Dr Terry Beutel
Senior Scientist
Agri-Science Queensland
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