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On 05/31/2010 07:25 PM, Kim Besson wrote:
<blockquote
cite="mid:AANLkTikD7lrGdy046H3XIofWptrz98xqq9pp85VgyO6_@mail.gmail.com"
type="cite">Greetings
<div><br>
</div>
<div>Following a few suggestions made at this list I'm using gdalwarp
to project a few landsat images and only then yusing r.in.gdal.</div>
<div><br>
</div>
<div>I'm using this expression to reproject image:</div>
<div>
<div>gdalwarp -t_srs "+proj=tmerc +lat_0=39.66825833333333
+lon_0=-8.133108333333334 +k=1 +x_0=0 +y_0=0 +ellps=GRS80 +units=m
+no_defs " L71203033_03320001023_B10.TIF landsat_out.tif</div>
<div><br>
</div>
<div>And when I run r.in.gdal I get this warning:</div>
<div>
<div>Datum <unknown> not recognised by GRASS and no parameters
found</div>
<div>Projection of input dataset and current location appear to match</div>
<div><br>
</div>
<div>What does this means?</div>
<div><br>
</div>
</div>
</div>
</blockquote>
There's no +datum= parameter in the CRS definition, so the new,
projected tif has no datum information. But, if you're sure the above
parameters are correct, you can ignore the warning and tell GRASS to
ignore the warning with the "-o" option to r.in.gdal. <br>
BTW, how did you define the GRASS Location? with the EPSG:3763 or the
above definition? If so, then you surely should have no problem
importing with the -o (over-ride projection check) option.<br>
<br>
<blockquote
cite="mid:AANLkTikD7lrGdy046H3XIofWptrz98xqq9pp85VgyO6_@mail.gmail.com"
type="cite">
<div>
<div>
<div>Thanks</div>
<div>kim</div>
</div>
</div>
<br>
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</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Micha Silver
Arava Development Co. +972-52-3665918
<a class="moz-txt-link-freetext" href="http://www.surfaces.co.il">http://www.surfaces.co.il</a>
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