<br><br><div><span class="gmail_quote">On 8/24/06, <b class="gmail_sendername">Glynn Clements</b> <<a href="mailto:glynn@gclements.plus.com">glynn@gclements.plus.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>This problem can be solved to an extent by using the value from the<br>PROJ_UNITS file to convert ground distances to metres (although that<br>requires that the PROJ_UNITS file actually contains the correct<br>value).
</blockquote><div><br>
<br>
I did'nt fully understand this comment Glynn. Could you please elaborate this idea? <br>
FYI, <br>
GRASS 6.0.1 (cru3):~/CRU > g.proj -w<br>
GEOGCS["wgs84",<br>
DATUM["WGS_1984",<br>
SPHEROID["wgs84",6378137,298.257223563],<br>
TOWGS84[0.000,0.000,0.000]],<br>
PRIMEM["Greenwich",0],<br>
UNIT["degree",0.0174532925199433]]<br>
<br>
</div>And my Proj_units file in the PERMANENT mapset is:<br>
unit: degree<br>
units: degrees<br>
meters: 1.0<br>
<br>
I'm not sure what the last line of g.proj -w means, what does unit there refer to,<br>
as opposed to the proj_units 'meters' field?<br>
<br>
thanks,<br>
vishal<br></div><br>