v.rast.stats seems to be what I was looking for.<br>Thank you Jaroslaw.<br><br>Odoardo Zecca<br><br><div><span class="gmail_quote">On 2/16/07, <b class="gmail_sendername">Jarosław Jasiewicz</b> <<a href="mailto:jarekj@amu.edu.pl">
jarekj@amu.edu.pl</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Odoardo Zecca napisał(a):<br>> Hello all,<br>> I've created a vector thematic map with a dozen of different areas
<br>> (different units in a viticultural zoning study).<br>> For the same region, I've got a few rasters as well: DEM, slope and<br>> aspect, annual precipitations, solar radiation, Winkler's index, ....<br>
><br>> What I need is an estimate of some statistics as min, max, mean values<br>> of each variable (elevation, ...) for each particular region. What do<br>> you suggest as the best method (for what concern speed and, above all,
<br>> quality of results) in order to accomplish this task?<br>> I only can imagine this:<br>><br>> 1) transform the vector map in raster<br>> 2) use r.statistics (as in the example in the manual) or maybe<br>
> r.statistics applied to the rasters of climatic variables after<br>> masking for each particular area.<br>><br>> Is there some better way, in particular a way which doesn't involve<br>> transforming the vector map to raster?
<br>><br>> Thanks in advance.<br>><br>> Odoardo Zecca<br>><br>> Institut Agricole Régional<br>> Regione La Rochère 1/A<br>> 11100 Aosta<br>> email: <a href="mailto:o.zecca@iaraosta.it">o.zecca@iaraosta.it
</a> <mailto:<a href="mailto:o.zecca@iaraosta.it">o.zecca@iaraosta.it</a>><br>><br>><br>> ------------------------------------------------------------------------<br>><br>> _______________________________________________
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<br>><br>what about v.rast.stats?<br><br>Jarek<br></blockquote></div><br>