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.

Version: 0.5.7
Depends: R (≥ 3.2.3), sp (≥ 1.1.1)
Imports: rgeos (≥ 0.3), raster (≥ 2.4-15), methods, parallel (≥ 3.4.0), plyr (≥ 1.8.4)
Suggests: R.rsp, maptools (≥ 0.8), testthat, reshape2 (≥ 1.4.2), threejs, rgdal
Published: 2018-09-29
Author: Michael Dorman [aut, cre], Evyatar Erell [ctb], Itai Kloog [ctb], Adi Vulkan [ctb]
Maintainer: Michael Dorman <dorman at post.bgu.ac.il>
BugReports: https://github.com/michaeldorman/shadow/issues
License: MIT + file LICENSE
NeedsCompilation: no
Materials: NEWS
CRAN checks: shadow results

Downloads:

Reference manual: shadow.pdf
Vignettes: Introduction to the 'shadow' R package
Package source: shadow_0.5.7.tar.gz
Windows binaries: r-devel: shadow_0.5.7.zip, r-release: shadow_0.5.7.zip, r-oldrel: shadow_0.5.7.zip
OS X binaries: r-release: shadow_0.5.7.tgz, r-oldrel: shadow_0.5.7.tgz
Old sources: shadow archive

Linking:

Please use the canonical form https://CRAN.R-project.org/package=shadow to link to this page.