shadow (0.5.3)

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Geometric Shadow Calculations.

http://cran.r-project.org/web/packages/shadow

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.

Maintainer: Michael Dorman
Author(s): Michael Dorman [aut, cre], Evyatar Erell [ctb], Itai Kloog [ctb], Adi Vulkan [ctb]

License: MIT + file LICENSE

Uses: plyr, raster, rgeos, sp, R.rsp, maptools, rgdal, testthat, reshape2, threejs

Released 8 days ago.


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