[GRASS-web] Reading IMG and extracting data

[Nina Bhola]

Hi

I am trying to open an IMG file containing NDVI data.
It is for Africa WGS 1984. I would like to then add my study area onto
the map as a
shape file and extract NDVI values for each 5km by 5km grid cell. I
tried to do this,
 but it is not working. Can you please help me.
I have attached one of the Africa NDVI composites for one month.
 Is there a script to extract data for a particular location in GRASS?

Thanks
Nina
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