globalmapper.SpatialMBR ======================= .. currentmodule:: globalmapper .. py:function:: SpatialMBR (GM_LayerHandle_t32 aLayer, GM_SpatialOps_Params_t aParams, GM_FeatureGrouping_t8 aGrouping, str aStr) -> GM_Error_t32 The **MBR (Minimum Bounding Rectangle)** operation creates, on a new layer, the smallest axis-aligned bounding box that contains the features from *aLayer*. The parameter *aGrouping* can be used to specify whether to make MBRs for each feature, each feature group, or one for the entire layer. :param GM_LayerHandle_t32 aLayer: Input layer :param GM_SpatialOps_Params_t aParams: Parameters :param GM_FeatureGrouping_t8 aGrouping: Grouping type :param str aStr: The attribute list string; may be an empty string :returns: Error Code :rtype: GM_Error_t32