[GRASS-user] TO BE POST: Extract a smaller image (sample) from a raster map

[Liria Boix]

COULD THIS BE POSTED TO THE MAILING LIST, PLEASE? I'M SUBSCRIBED TO IT BUT MY POST APPEAR AS  "... NOT been accepted by the mailing list yet. "


Hi everyone: 

Have Modis images MOD13Q1 reprojected into Tiff format imported 
into grass to analize NDVI for different months and seasons. As I just 
need to analize NDVI for a specific crop area of the image imported, I want to extract or select that region from the raster map. 

After reading several post explaining that R.region/G.region 
should be use to set the geographic boundaries, I decided to follow the 
instruction and have use r.region setting nort, south, east and 
west values of the smaller area BUT only get the same image narrower in 
width and longer in high. 

Now, when I follow the use of this command again I get the message "unable to parse command r.region" 

I'm new in Grass! and feel confuse. What I am missing? Please help! Many Thanks in adavance. 
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