Creating Raster Brick - Very Slow
Just to be sure, before suggesting possible solutions, you have 12,000 rasters of identical extent (e.g. bands or time slices of the same place)? Thanks, Alex
On 12/10/2015 11:09 PM, Stephen Stewart wrote:
Hi everyone!
I am currently building 8 raster bricks that are made up of 12,000 raster
files of approximately 500kb each, however it is running incredibly slow!
The code I am using is as follows:
library(raster)
setwd("c:/files")
files <- list.files(getwd(),pattern=".tif")
stack <- stack(files)
brick <- brick(stack,filename = "c:/files/my_raster_brick.tif",format =
"GTiff")
I was wondering if there was a brick equivalent of quick.stack or something
to speed up the process? Alternatively, something outside of R perhaps that
may be more efficient? It is looking like it will take around 50 days per
brick at this rate!
I want to be able to quickly extract vectors of values (using
my_raster_brick[row,col]) so stacks are out of the question as they are way
too slow.
Thanks and have a great break!
Cheers,
Steve
[[alternative HTML version deleted]]
_______________________________________________ R-sig-Geo mailing list R-sig-Geo at r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo