Hi Markus Neteler,<br><br>yes, importing pixel values with <a href="http://r.in">r.in</a> ascii and patch into existing into raster is simple easy for particular pixel, <br>but if we want to assign a height value to more pixels, for example assigning height value to buildings in a <br>
particular area in raster map is difficult as we don't no to which pixel value we have to assign height value and<br>checking each pixel value is difficult. And i am more intrested by doing automatic process.<br><br>Thanks in advance,<br>
nani.<br><br><div class="gmail_quote">On Sat, Apr 16, 2011 at 10:26 AM, Markus Neteler <span dir="ltr"><<a href="mailto:neteler@osgeo.org">neteler@osgeo.org</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">On Sat, Apr 16, 2011 at 7:23 PM, vinod kumar <<a href="mailto:nani.kunithi@gmail.com">nani.kunithi@gmail.com</a>> wrote:<br>
> Hi Daniel Victoria,<br>
><br>
> d.rast.edit is to edit the raster data and i want to know how to assign 'Z'<br>
> value or height value to a particular pixel(x,y) and this would be helpful<br>
> if there is an automatic algorithm for assigning height value for selected<br>
> pixels.<br>
<br>
</div>The easiest way is:<br>
- import pixel with r.in.ascii<br>
- patch into existing raster map with r.patch<br>
<font color="#888888"><br>
Markus<br>
</font></blockquote></div><br>