GM_GetPixelElevation |
Retrieves the elevation at a given pixel location from a provided elevation layer. If the layer does not contain a valid elevation sample at the provided pixel location (i.e. it is a "no data" value), GM_Error_NoDataAtLocation will be returned.
SyntaxGM_DLL_EXPORTED GM_Error_t32 GM_GetPixelElevation ( GM_LayerHandle_t32 aLayer, // IN: Layer to get elevation from or NULL for topmost sint32 aRow, // IN: Y coord of pixel (0 is topmost) sint32 aCol, // IN: X coord of pixel (0 is leftmost) float* aElev // OUT: Elevation at location in meters );