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ambrish dhaka wrote:
<blockquote cite="mid:SNT110-W4043F7F0E06D6C2B932D0FB79A0@phx.gbl"
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</style>Hi! all,<br>
I wish to perform r.mapcalc algebra for an area bound by certain
polygons in a vector file. How to do this?<br>
</blockquote>
Easiest would probably be to use a raster MASK:<br>
1- convert the vector ("polygon" ) to a raster with v.to.rast<br>
2- define this new raster as a mask with r.mask<br>
3- run your r.mapcalc expression<br>
<br>
-- <br>
Micha<br>
<blockquote cite="mid:SNT110-W4043F7F0E06D6C2B932D0FB79A0@phx.gbl"
type="cite">Are there any correlation and anova expressions for
r.mapcalc. I would like them to use for, kindly help me how to put
these expressions if there is no such things, for eg, Corr(ma1, map2,
bound by polygon a).<br>
<br>
thanks!<br>
ambrish<br>
<br>
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