npGeom Tools

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The following tools are implemented in the npGeom.tbx toolbox for use in ArcGIS Pro.

The Geo array, based on a numpy array, is used along with arcpy functions to implement the tools.

The tools here are the most recent version of those provided in FreeTools

(1) Attribute tools

The tools are self-evident and don't include multiple options.

(2) Containers

The containers toolset offers the options shown in the image.

• Bounding circles is probably the most uncommon for GIS tools.

• extent polygon is the axis aligned extent of the feature geometry.

• Convex hull is included for convenience. It uses scipy's Qhull implementation.

(3) Conversion

The options for conversion are as follows:

• Feature to point will return the geometry centroid for polygons.

• Split at vertices is for polygon geometry. From-to point segmentation of the geometry will be returned.

• Vertices to points applies to polyline/polygon geometry.

• Polygons to polylines is also a convenience function since it only requires a Kind (K) conversion in the Geo class.

The reciprocal function was not implemented because I didn't want to provide a whole load of geometry checks.

If you have polyline geometry that you know will create well-formed polygons, simply change K.

(4) Sort Geometry

• Extent sort provides options for sorting geometries using keys like S - N, E - W etcetera.

• Geometry sort can be used to sort by area or perimeter/length. Source image

(5) Alter Geometry

The tool listing provides densification options, filling holes in polygons, and shifting and rotating geometries either as a group or individually.

(6) Triangulation Tools

Voronoi diagram (aka Thiessen polygons) and Delaunay triangulations, round out the tools so far.