Casper,<br><br>You can edit the vrt file in a text editor. Just make a copy of the elements of one file and change them according to the fourth file. You can refer to the VRT tutorial[1] if you have any doubts.<br><br>Can you provide the full gdalinfo report of the two files?<br>
<br>[1]: <a href="http://www.gdal.org/gdal_vrttut.html">http://www.gdal.org/gdal_vrttut.html</a><br><br><div class="gmail_quote">On Tue, Jul 31, 2012 at 7:16 PM, Casper Børgesen (CABO) <span dir="ltr"><<a href="mailto:CABO@niras.dk" target="_blank">CABO@niras.dk</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US">What do you mean by manually? I run gdalbuildvrt using the command line, so I don’t understand how it can be done more manually
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1f497d" lang="EN-US">J</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-indent:65.2pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US">gdalbuildvrt myfile.vrt file1.tif file2.tif file3.tif file4.tif<u></u><u></u></span></p>
<p class="MsoNormal" style="text-indent:65.2pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US">I have tried using an old version of gdalinfo (1.7.0) and it gives tells me that my first 3 bands in the old file contains a mask flag:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-indent:65.2pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Mask Flags: PER_DATASET ALPHA<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US">This flag is not present in the 3 new files. Could this be the reason?
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" lang="EN-US">Btw. my normal version of gdal is 1.9.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Regards, Casper<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"> Chaitanya kumar CH [mailto:<a href="mailto:chaitanya.ch@gmail.com" target="_blank">chaitanya.ch@gmail.com</a>]
<br>
<b>Sent:</b> 31. juli 2012 15:30<br>
<b>To:</b> Casper Børgesen (CABO)<br>
<b>Cc:</b> <a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [gdal-dev] gdalbuildvrt problem with heterogenous band characteristics<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Casper,<br>
<br>
This message should not appear unless there is a difference in the band data type, colour interpretation or the band order.<br>
Can you check if manually adding the old file works?<u></u><u></u></p>
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<p class="MsoNormal">On Mon, Jul 30, 2012 at 11:01 PM, Casper Børgesen (CABO) <<a href="mailto:CABO@niras.dk" target="_blank">CABO@niras.dk</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hi!
<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">I’m trying to create a VRT file from 4 GeoTIFFs using gdalbuildvrt. Three of the GeoTIFFs are created using OrthoVista and the last one created with an earlier version of the same
program. When I run gdalbuildvrt I get the following error message when I try to add the file created by the early version:
<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal" style="text-indent:65.2pt">
Warning 6: gdalbuildvrt does not support heterogenous band characteristics. Skipping...<u></u><u></u></p>
<p class="MsoNormal" style="text-indent:65.2pt">
<u></u><u></u></p>
<p class="MsoNormal">Running gdalinfo on the 4 files I see only a difference in the metadata section (and of course in the coordinates).
<u></u><u></u></p>
<p class="MsoNormal">In the following is the band information from two of the files:<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">[From new version]<u></u><u></u></p>
<p class="MsoNormal">Band 1 Block=6250x20 Type=Byte, ColorInterp=Red<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal">Band 2 Block=6250x20 Type=Byte, ColorInterp=Green<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal">Band 3 Block=6250x20 Type=Byte, ColorInterp=Blue<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal">Band 4 Block=6250x20 Type=Byte, ColorInterp=Undefined<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">[From earlier version]<u></u><u></u></p>
<p class="MsoNormal">Band 1 Block=6250x20 Type=Byte, ColorInterp=Red<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal">Band 2 Block=6250x20 Type=Byte, ColorInterp=Green<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal">Band 3 Block=6250x20 Type=Byte, ColorInterp=Blue<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal">Band 4 Block=6250x20 Type=Byte, ColorInterp=Undefined<u></u><u></u></p>
<p class="MsoNormal"> Overviews: 1024x1024<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">To me they seem identical and I can display them both using QGis 1.8. I guess that the difference is deeper inside the TIFFs than gdalinfo informs me about – what can I do to avoid
this problem?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Regards Casper<u></u><u></u></p>
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<p class="MsoNormal"><br>
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<p class="MsoNormal"><br>
<br>
<br>
-- <br>
Best regards,<br>
Chaitanya kumar CH.<br>
<br>
<a href="tel:%2B91-9494447584" value="+919494447584" target="_blank">+91-9494447584</a><br>
17.2416N 80.1426E<u></u><u></u></p>
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</blockquote></div><br><br clear="all"><br>-- <br>Best regards,<br>Chaitanya kumar CH.<br><br>+91-9494447584<br>17.2416N 80.1426E<br>