clipping a large image on R
Try the EBImage package (utilizes ImageMagick and is available via Bioconductor.org) - not sure if it well help though. If not, try to clip the larger image by calling ImageMagick outside R. /HB
On 11/01/2008, Milton Cezar Ribeiro <milton_ruser at yahoo.com.br> wrote:
Dear all,
I have a so large image (43,000 x 18,000 pixels) and I need clip this image with a smallest one (1000x1000 pixels). I can read the second image using rgdal package. But the first image can?t be read on my system because if memory limitation (I have about 2GB availabe).
So I would like hear from you if anyone have some suggestin in this regards. I have also ArcGis 8.6 ans Erdas 8.3 running on my system and I can read the largest file without problem. But I dont know how clip the large image to keep only those pixels that math to he smallest image coordinates.
kind regards, miltinho
para armazenamento!
[[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.