Extracting smaller raster images from big ones

[Harini Nagendra]

Help! I don't know if this is an obvious question, but I have been 
searching the Grass manual and can't find an answer - I have large raster 
images and want to extract smaller ones from them for the purpose of 
supervised classification. How do I do this? I have the coords of the 
smaller images I want. Defining smaller regions doesn't help, since 
i.class doesn't take a region name, it simply loads the entire image !
Please help.... I don't want to export to IDRISI, then extract, and then 
reimport, as that would take rtoo much time.
Thanks a lot
Harini

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| Harini Nagendra               E-MAIL : harini at ces.iisc.ernet.in      |
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