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<p class="MsoNormal">Hello gdal-dev, it's been a long time! I'm happy to be digging into raster data building again for a change, but could use some nudges in the right direction(s).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A few weeks ago Nasa released <a href="https://daac.ornl.gov/ABOVE/guides/Annual_Landcover_ABoVE.html">
Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain, 1984-2014</a>.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It’s composed of 175 geotiff images, with each file containing 31 bands which in turn correspond to a single year in the 1984-2014 period. Each band is 8bit unsigned integer with values from 1 to 15 and 255 as nodata. Each integer value
corresponds to a class such as “Evergreen Forest”, “Herbaceous”, “Water” and so on.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve been successful in manually building a VRT file using Category element for the classes and ColorTable entry for a palette – but only for a single band.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My question is: how to properly apply this to all bands? Do I need duplicate category and colortable elements to every single VRTRasterBand element or is there a smart way to define it once and then refer to it like a variable? Am I even
approaching this the right way?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It was quite a bit of work to get this far and I’m not looking forward to doing this 30 more times.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sample vrt and simplified source is attached.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-top:4.0pt;line-height:115%;text-autospace:none;vertical-align:middle">
<b><span lang="EN-US" style="font-size:10.0pt;line-height:115%;font-family:"Arial",sans-serif;mso-fareast-language:EN-CA">Matt Wilkie</span></b><span lang="EN-US" style="font-size:10.0pt;line-height:115%;font-family:"Arial",sans-serif;mso-fareast-language:EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-CA">Geomatics Analyst<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-CA">Environment | Information Management & Technology<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-CA">T 867-667-8133 |
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-CA"><a href="http://yukon.ca/"><span lang="EN-US" style="color:windowtext">Yukon.ca</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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