GIS Topology Math

contains some python code that recreates basic GIS topology calculations (as e.g. performed in ArcGIS)

Growing list:

• vector slope calculations: Triangular Irregular Networks (GIS vector way of representing elevation)
  • TODO: expand and modularize
• raster slope calculations
  • normalized weighting and sqrt(2) weighting
• conversion between radians and degrees
• conversion between orbit and meters

Resources

• http://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/how-aspect-works.htm
• https://en.wikipedia.org/wiki/User:LucasVB/Gallery#/media/File:Circle_radians.gif
• https://www.khanacademy.org/math/algebra2/trig-functions/intro-to-radians-alg2/v/introduction-to-radians