[R-sig-Geo] Brick and Stack in package raster

[Agustin Lobo]

Sorry the question
"When you write a brick to a file, can you control if the resulting
file is going to be BSQ or BIL?"

is pretty clear in the manual.

Agus

2010/11/26 Agustin Lobo <alobolistas at gmail.com>:
> Robert,
>
> At some point you made this comment:
>
>>>> (as you are dealing with large
>>>> files, I think it is more efficient to first make a stack and then
>>>> write the results to a brick)
>
> But I have some doubts:
>
> bN = brick(N1,N2,N3,...,N72)
> where
> N1 = raster(paste(midir,"NDV_19990101__Extract.img",sep="")) etc
> takes a very long time. Is a file on disk being written somewhere?
>
> Is overlay() going to be any faster with brick than with stack objects? ie:
> bNv2 <- overlay(bN, bSM,
> fun=fun1,filename="bNv2.tif",overwrite=TRUE,NAflag=0) faster than
> sNv2 <- overlay(sN, sSM, fun=fun1,filename="sNv2.tif",overwrite=TRUE,NAflag=0) ?
> (bN, bSM, brick objects; sN, sSM, stack objects)
>
> When you write a brick to a file, can you control if the resulting
> file is going to be BSQ or BIL?
>
> Are the files written by writeRaster() identical for stack and brick objects?
> writeRaster(bNv2,
> filename="bNv2b.tif",overwrite=TRUE,format="GTiff",datatype='INT2U',NAflag=0)
> writeRaster(sNv2,
> filename="sNv2b.tif",overwrite=TRUE,format="GTiff",datatype='INT2U',NAflag=0)
>
> Thanks
>
> Agus
>