[R-sig-Geo] Creating Raster Brick - Very Slow

[Alex M]

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
> 
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