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.

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Description file content

Package
shadow
Type
Package
Title
Geometric Shadow Calculations
Version
0.5.9
Description
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.
License
MIT + file LICENSE
LazyData
TRUE
Imports
rgeos (>= 0.3), raster (>= 2.4-15), methods, parallel (>= 3.4.0), plyr (>= 1.8.4)
Depends
R (>= 3.2.3), sp (>= 1.1.1)
RoxygenNote
6.1.0
Suggests
R.rsp, maptools (>= 0.8), testthat, reshape2 (>= 1.4.2), threejs, rgdal
VignetteBuilder
R.rsp
BugReports
https://github.com/michaeldorman/shadow/issues
Encoding
UTF-8
NeedsCompilation
no
Packaged
2018-12-04 11:51:46 UTC; michael
Author
Michael Dorman [aut, cre], Evyatar Erell [ctb], Itai Kloog [ctb], Adi Vulkan [ctb]
Maintainer
Michael Dorman
Repository
CRAN
Date/Publication
2018-12-04 12:10:03 UTC

install.packages('shadow')

0.5.9

5 days ago

Michael Dorman

MIT + file LICENSE

Depends on

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

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