shadow: Geometric Shadow Calculations

Functions for calculating: (1) shadow height, (2) logical shadow flag, (3) shadow footprint, (4) Sky View Factor and (5) radiation load. Basic required inputs include a polygonal layer of obstacle outlines along with their heights (i.e. "extruded polygons"), sun azimuth and sun elevation. The package also provides functions for related preliminary calculations: breaking polygons into line segments, determining azimuth of line segments, shifting segments by azimuth and distance, constructing the footprint of a line-of-sight between an observer and the sun, and creating a 3D grid covering the surface area of extruded polygons.

Getting started

Package details

AuthorMichael Dorman [aut, cre], Evyatar Erell [ctb], Itai Kloog [ctb], Adi Vulkan [ctb]
MaintainerMichael Dorman <[email protected]>
LicenseMIT + file LICENSE
Version0.6.0
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("shadow")

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shadow documentation built on Jan. 8, 2019, 1:08 a.m.