GM_GenerateDensityGrid |
Generates a density (heat) grid from the point features in a layer. The values will be based on either just the count of point features or the value of some attribute. The layer handle returned in aGridLayer must be closed with GM_CloseLayer when you are done with it.
See the definition of the GM_DensityGridParams_t type in the GlobalMapperInterface.h header file for a description of what options are available when generating the density grid. The default options are all a value of zero so you can just pass in a zero'd out structure to get the defaults if you want.
SyntaxGM_Error_t32 __stdcall GM_GenerateDensityGrid ( GM_LayerHandle_t32 aPointLayer, // IN: Layer to get points from const GM_DensityGridParams_t* aGridParms, // IN: Parameters for generating density grid GM_LayerHandle_t32* aGridLayer // OUT: Created density grid layer )