[GRASSLIST:1031] interpolation from vector points

[Luca Penasa]

Iv a mapset with a lot (200) of point. Every point is a pollution 
indicator (a tree, a bush...) with many informations, one of these is a 
lichens biodiversity index.
What i want to do is to interpolate this index value to obtain a map of 
biodiversity of the city covered by the survey.
Iv done the interpolation (with no so good results) but now i need to 
cut the raster obtained around the external points... maybe i have to do 
something like a buffer around the external points of survey and cut the 
map obtained from interpolation. How can i do that without have 'holes' 
in the internal part of the map? is there a way to do that?


Sorry for my English

Luca
 
 
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