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: |
0.7.1 |
| Depends: |
R (≥ 3.5.0), sp (≥ 1.1.1) |
| Imports: |
rgeos (≥ 0.3), raster (≥ 2.4-15), methods, parallel (≥
3.4.0) |
| Suggests: |
R.rsp, maptools (≥ 0.8), testthat, reshape2 (≥ 1.4.2), threejs, rgdal |
| Published: |
2021-03-14 |
| Author: |
Michael Dorman [aut, cre],
Evyatar Erell [ctb],
Itai Kloog [ctb],
Adi Vulkan [ctb],
Roger Bivand [ctb] |
| Maintainer: |
Michael Dorman <dorman at post.bgu.ac.il> |
| BugReports: |
https://github.com/michaeldorman/shadow/issues/ |
| License: |
MIT + file LICENSE |
| URL: |
https://michaeldorman.github.io/shadow/,
https://github.com/michaeldorman/shadow/ |
| NeedsCompilation: |
no |
| Materials: |
NEWS |
| CRAN checks: |
shadow results |
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