Grid Unique-values Map
When the Current Map is Raster Layer, click the New button in the Thematic Map group, select Grid Unique-values Map "in the pop-up dialog box, and Select Template on the right side of the window. A Grid Unique-values Map is created. Users can also customize the Grid Unique-values Map through the Style Settings window of the Grid Unique-values Map.
A Unique-values Map can be made based on any Raster Layer. When creating a Grid Unique-values Map, first set the Raster Layer Settings to be Create Thematic Map as the current layer, that is, select the Raster Layer in the Layer Manager.
制作Grid Unique-values Map的两种途径：
Precautions
Grid Unique-values Map can only be made for Raster Data of integer type. Grid Unique-values Map cannot be made for data of non-integer type.