Tacot,<br><br>If the red pixels are shaped like a block, it could be a missing tif image. Otherwise, there may be a discrepancy in the nodata values.<br>A screenshot of your data can help.<br><br><div class="gmail_quote">On Tue, Aug 3, 2010 at 5:48 PM, Tacot <span dir="ltr"><<a href="mailto:cfab13@hotmail.fr">cfab13@hotmail.fr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Hi,<br>
<br>
I try to assemblez several TIF to make a unique picture.<br>
I use this command:<br>
<br>
C:\GDAL\SCAN25_SCOT>gdalbuildvrt truc.vrt C:\GDAL\SCAN25_SCOT\*.tif<br>
-srcnodata "0 0 0"<br>
0...10...20...30...40...50...60...70...80...90...100 - done.<br>
<br>
C:\GDAL\SCAN25_SCOT>gdal_translate -of GTiff<br>
C:\GDAL\SCAN25_SCOT\truc.vrt C:\GDAL\SCAN25_SCOT\truc.tif<br>
<br>
<br>
But a part of the picture gets a lots of red pixels.<br>
<br>
Does someone know why?<br>
<br>
Thanks<br>
Tacot<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>