Types for Spatial Operations¶

The following types are used for spatial operation functions within GlobalMapper. These types use fixed, numeric constants, which are defined here.

globalmapper.GM_PredicateResultTargets_t8¶

Result targets for predicate results

Values:

GM_PredicateResult_CreateNewSelection = 0: Create new selection from matched features
GM_PredicateResult_AddToSelection = 1: Add matched features to current selection
GM_PredicateResult_RemoveFromSelection = 2: Remove matched features from current selection
GM_PredicateResult_CreateNewLayer = 3: Clone matched features into a new layer
GM_PredicateResult_ReturnFeatures = 4: Return matched via GM_FoundFeatureResults_t*
GM_PredicateResult_InvertSelection = 5: Deselect matched features that are selected, and select those that aren’t

globalmapper.GM_SpatialOperations_t8¶

Spatial operation types

Values:

GM_SpatialOps_Intersection = 0: Returns the spatial intersection of two layers
GM_SpatialOps_Union = 1: Returns the the spatial union of two layers, or among features of a single layer
GM_SpatialOps_Difference = 2: Returns the the spatial difference between two layers
GM_SpatialOps_SymmetricDifference = 3: Returns the the spatial symmetric difference between two layers

globalmapper.GM_SpatialOps_Errorhandling_t8¶

Flags specifying how to handle invalid input geometries

Values:

globalmapper.GM_SpatialPredicates_t16¶

Spatial predicate types

Values:

GM_SpatialPredicates_Intersects = 1: Calculates the set of features that intersect features in another layer
GM_SpatialPredicates_Overlaps = 2: Calculates the set of features that overlap features in another layer
GM_SpatialPredicates_Touches = 4: Calculates the set of features that touch features in another layer
GM_SpatialPredicates_Contains = 8: Calculates the set of features that wholly contain features in another layer
GM_SpatialPredicates_IsEqual = 16: Calculates the set of features that have have an exact match with the geometry of a feature in another layer
GM_SpatialPredicates_IsWithin = 32: Calculates the set of features that are wholly contained by a feature in another layer
GM_SpatialPredicates_IsDisjoint = 64: Calculates the set of features that do not intersect features in another layer

globalmapper.GM_SpatialTransforms_t16¶

Spatial transform types

Values:

GM_SpatialTransform_MBR = 1: Returns a bounding rectangle area feature for each grouping of a given layer
GM_SpatialTransform_Center = 2: Returns a center point feature for each grouping of a given layer
GM_SpatialTransform_ConvexHull = 3: Returns a convex hull area feature for each grouping of a given layer
GM_SpatialTransform_ConcaveHull = 4: Returns a concave hull area feature for each grouping of a given layer
GM_SpatialTransform_Buffer = 5: Returns a buffer area feature at a given distance from each grouping of a given layer
GM_SpatialTransform_Centroid = 6: Returns a centroid point feature for each grouping of a given layer
GM_SpatialTransform_Circle = 7: Returns a circle area feature for each grouping of a given layer

globalmapper.GM_FeatureGrouping_t8¶

Feature grouping for spatial transforms

Values: