Hamish, <br><br>thank you. It's working<br><br>ramaraju<br><br><div class="gmail_quote">On Sat, May 31, 2008 at 8:58 PM, Hamish <<a href="mailto:hamish_b@yahoo.com">hamish_b@yahoo.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
ramaraju:<br>
<div><div></div><div class="Wj3C7c">> I am using SRTM data for my study area with elevation<br>
> values ranging from 12 m to 960 m. I have set the color table to bgyr.<br>
> When I tried composing a map in ps.map using the above data with color<br>
> table, it gave me the following error message:<br>
> Your cats/ file is invalid. A cats/ file with categories and labels is<br>
> required for 'colortable' when using CELL rasters.<br>
> No colortable will be assigned to this output postscript file.<br>
> However, raster legend can be displayed in the grass map<br>
> display window.<br>
> I am using GRASS 6.3 on ubuntu 8.04 Can any of you advise me on how<br>
> to overcome this problem and print color table?<br>
<br>
</div></div>not a very good solution, but convert the map to a FCELL raster with:<br>
<br>
g.region rast=cell_map<br>
r.mapcalc "fcell_map = float(cell_map)"<br>
<br>
<br>
then it shouldn't treat it as categorical and the colortable legend should work.<br>
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Hamish<br>
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