Ok, thank you.<div><br></div><div>I will try it and inform about results here.<br><br><div class="gmail_quote">On Mon, Dec 10, 2012 at 4:17 PM, Glynn Clements <span dir="ltr"><<a href="mailto:glynn@gclements.plus.com" target="_blank">glynn@gclements.plus.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"><br>
Andranik Hayrapetyan wrote:<br>
<br>
> > r.mapcalc?<br>
><br>
><br>
> I don't know how to overlay rasters with r.mapcalc. can you, please be a<br>
> bit detailed?<br>
<br>
</div> r.mapcalc 'outmap = if(isnull(map1),map2,map1)'<br>
<br>
But this is just as inefficient as r.patch.<br>
<br>
There isn't currently an efficient way to join "slices" either using<br>
commands or the public C API.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Glynn Clements <<a href="mailto:glynn@gclements.plus.com">glynn@gclements.plus.com</a>><br>
</font></span></blockquote></div><br></div>