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Institute for Geographic Information Science

the center for geospatial research at San Francisco State University

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Python Script Geoprocessing Tools

By Jerry Davis, SFSU Institute for GIScience.

To use:

  1. Download and extract the zip file.
  2. Add the toolbox to ArcToolbox in ArcMap or ArcCatalog.
  3. Optionally, test with sample data in the ToolData folder.

LineSlope Tool (download)

Creates line segments with line slopes from existing polylines.


Survey Tools (download)

Converts surveyed XYZM and NEZM points into 3D polylines and 3D points.


Hypsometry Tools (download)

Derive hypsometry
(area / elevation) and stream gradients for points extending through a watershed elevation raster.


SSUS Sample Tool (download)

Creates a Systematic Stratified Unaligned Sample of Points for polygons.


Get DEM Units (download)

To create polylines coded with their linear slope, from 3D polylines. Lines are created between vertices of input polylines.

Ruggedness (download)

Creates a surface from an elevation raster representing ruggedness of terrain. Works with all ArcGIS friendly raster formats except Personal Geodatabase

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