Alessandro,<br><br>You can combine the tiff and the mask using GDAL's VRT format or by using the -separate option in gdal_merge.py script. The extra band should be set as a nodata mask or alpha band.<br><br><a href="http://www.gdal.org/gdal_vrttut.html">http://www.gdal.org/gdal_vrttut.html</a><br>
<a href="http://www.gdal.org/gdalbuildvrt.html">http://www.gdal.org/gdalbuildvrt.html</a><br><br><a href="http://www.gdal.org/gdal_merge.html">http://www.gdal.org/gdal_merge.html</a><br><br><div class="gmail_quote">On Thu, Apr 28, 2011 at 1:00 PM, canduc17 <span dir="ltr"><<a href="mailto:candini@meeo.it">candini@meeo.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi everyone.<br>
<br>
Is there a way to crop a GEOTiff image using a Mask of the same dimension?<br>
<br>
For example, a mask with a filled circle: every pixel inside the circle is 1<br>
and the others are 0.<br>
I would like to obtain a new GEOTiff with only the pixel inside the circle<br>
visible and the other set to 0.<br>
<br>
Is that possible with tools like gdal_translate or other ones?<br>
<br>
Thanks in advance!<br>
<font color="#888888"><br>
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</font></blockquote></div><br><br clear="all"><br>-- <br>Best regards,<br>Chaitanya kumar CH.<br>/tʃaɪθənjə/ /kʊmɑr/ <br>+91-9494447584<br>17.2416N 80.1426E<br>