Hi Stéphane, I too feel this is a major missing piece of functionality in QGIS. I often work with large vegetation and landcover rasters, and while it is possible to work with them in QGIS, it seems much more laborious than it needs to be. I entered a related ticket on this issue last year
https://hub.qgis.org/issues/14449 My take was slightly different, I was suggesting that there be support for raster attribute tables that come with many of these datasets, especially when they are in ERDAS Imagine img files. These attribute tables often include important data like vegetation type, vegetation complex, etc. If the table could be accessed you would then open the dataset up for both attribute queries and styling. These attribute columns could be made available to style the raster via the Categorized or Rule based renderers. For example, a vegetation dataset could be brought in and styled by the vegetation type attribute column. Or groups of vegetation/landcover types could be assigned the same color with the Rule based renderer. However, your solution may be easier to implement. It would be a major improvement to the software in my humble opinion :) Cheers, Kurt ************************** Kurt Menke, GISP Birds Eye View <http://www.birdseyeviewgis.com/> www.BirdsEyeViewGIS.com Work: 505-265-0243 Cell: 505-362-1776
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