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).
A few weeks ago Nasa released Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain, 1984-2014<https://daac.ornl.gov/ABOVE/guides/Annual_Landcover_ABoVE.html>. 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. 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. 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? It was quite a bit of work to get this far and I'm not looking forward to doing this 30 more times. Sample vrt and simplified source is attached. Matt Wilkie Geomatics Analyst Environment | Information Management & Technology T 867-667-8133 | Yukon.ca<http://yukon.ca/>
scratch_manually_built.vrt
Description: scratch_manually_built.vrt
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
