[R-sig-Geo] [R] clipping a large image on R

[Henrik Bengtsson]

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!
>
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