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GetPixelColor

Marius Lazar
Updated
globalmapper.GetPixelColor(GM_LayerHandle_t32 aLayer, sint32 aRow, sint32 aCol) → GM_Error_t32, GM_Color_t[source]

Retrieves the color at a given pixel location from the provided raster layer. If the layer does not contain a valid color value at the provided pixel location (i.e. it is a “no data” or transparent value), GM_Error_NoDataAtLocation will be returned.

Parameters:

  • aLayer (GM_LayerHandle_t32) – Layer to get color from

  • aRow (sint32) – Y coord of pixel (0 is topmost)

  • aCol (sint32) – X coord of pixel (0 is leftmost)

Returns:

Error Code

Return type:

GM_Error_t32

Returns:

Color of pixel at location

Return type:

GM_Color_t


Note

To get pixel row/col data, you can select a point feature in Global Mapper:

Right-click -> Attribute/Style Functions -> Add Pixel Coordinates to Selected Point(s)

Example

The following is an example of GetPixelColor.

err_GetPixelColor, pixel_color = gm.GetPixelColor(
    layers_list[0], 261, 878
)

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