shadow: 'shadow': R Package for Geometric Shade Calculations

In shadow: Geometric Shadow Calculations

Description

Main functions for calculating:

• shadowHeight, Shadow height at individual points or continuous surface

• shadowFootprint, Polygonal layer of shadow footprints on the ground

• SVF, Sky View Factor (SVF) value at individual points or continuous surface

Typical inputs for these functions include:

• location, Queried location(s)

• obstacles, A polygonal layer of obstacles (e.g. buildings) outline, with height attributes obstacles_height_field

• solar_pos, Solar position (i.e. sun azimuth and elevation angles)

The package also provides functions for related preliminary calculations, such as:

• toSeg, Converting polygons to line segments

• classifyAz, Finding segment azimuth

• shiftAz, Shifting segments by azimuth and distance

• ray, Constructing a line between two points

shadow documentation built on March 15, 2021, 1:07 a.m.