Project: QGIS
Version: 3.0.0
In QGIS 3.0, the existing raster Paletted Renderer for rasters was adapted to allow for easy styling of discrete raster layers, such as landcover or boolean rasters. Now, users can select the renamed "Paletted/Unique Values" renderer and click the "Add Unique Values" button to load all unique raster values from the layer. These are automatically assigned a color using the selected color ramp.
The unique value calculation is performed in a background thread to keep the UI responsive for large (or remote) raster layers. Additionally, users can manually add individual new classes as desired, and edit the associated pixel value for any existing class. Deleting multiple classes at once is also supported, as well as changing the color, transparency and labels for multiple classes at once.
Color palettes can be loaded from a text file, with ESRI clr/GDAL/GRASS color table formats supported. Color palettes can be saved to a clr text file for sharing.
This feature was funded by Stéphane Henriod, Satelligence (http://satelligence.com/), Bird's Eye View (https://www.birdseyeviewgis.com/), other anonymous backers
This feature was developed by Nyall Dawson (North Road)