globalmapper.SpatialBuffer
==========================

.. currentmodule:: globalmapper
.. py:function:: SpatialBuffer (GM_LayerHandle_t32 aLayer, GM_SpatialOps_Params_t aParams, GM_Distance_t aDistance, GM_FeatureGrouping_t8 aGrouping, str aStr) -> GM_Error_t32

	Creates a **buffer** area polygon around each feature or collection of features. The buffer space between the
	original feature and the resulting polygon will be based on the *aDistance* parameter, which defines both a unit and
	measurement.

	:param GM_LayerHandle_t32 aLayer: Input layer
	:param GM_SpatialOps_Params_t aParams: Parameters
	:param GM_Distance_t aDistance: Buffer width
	: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