globalmapper.MapCatalogSetMapOption
===================================

.. currentmodule:: globalmapper
.. py:function:: MapCatalogSetMapOption (GM_LayerHandle_t32 aCatalogLayer, uint32 aMapIndex, GM_MapCatalogMapOpt_t8 aMapOpt, int aOptData) -> GM_Error_t32

    Sets an option for a map in the map catalog, like the native projection. The option type determines what type of
    data to pass in for the *aOptData* parameter. The following types of options can be set:

    -   **GM_MapCatalog_SetMapProjection** - set the native projection to use for the map. The *aOptData* should be a
        GM_Projection_t

    :param GM_LayerHandle_t32 aCatalogLayer: Handle to map catalog layer (either from loading or CreateMapCatalog)
    :param uint32 aMapIndex: Index of map (0-based) to disable/enable
    :param GM_MapCatalogMapOpt_t8 aMapOpt: Option to set. This determines what type you should pass in for *aOptData*
    :param int aOptData: Data to use for option. The value of *aMapOpt* controls what this should be.
    :returns: Error Code
    :rtype: GM_Error_t32