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<p style="margin-bottom: 0cm; margin-top: 0pt;">ambrish dhaka wrote:<br>
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<blockquote cite="mid:SNT110-W41494AAE77DC576E91DFCBB79A0@phx.gbl"
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</style>And, how to write correlation expression for two maps. Need
help!<br>
Ambrish<br>
<br>
</blockquote>
I'm not sure what you mean by "correlation expression". Perhaps a more
specific question will get a better response from the list.<br>
-- <br>
Micha<br>
<blockquote cite="mid:SNT110-W41494AAE77DC576E91DFCBB79A0@phx.gbl"
type="cite">
<hr id="stopSpelling">Date: Sun, 15 Mar 2009 09:33:36 +0200<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:micha@arava.co.il">micha@arava.co.il</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:ambijat@hotmail.com">ambijat@hotmail.com</a><br>
CC: <a class="moz-txt-link-abbreviated" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a><br>
Subject: Re: [GRASS-user] r.mapcalc and polygons<br>
<br>
<title></title>
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">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>
<hr></blockquote>
<br>
<br>
<hr>So many new options, so little time. <a moz-do-not-send="true"
href="http://www.microsoft.com/india/windows/windowslive/messenger.aspx"
target="_new">Windows Live Messenger.</a><br>
<br>
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<br>
</blockquote>
<br>
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