build


A <code>SpatialPolygonsDataFrame</code> representing the outlines of four buildings. The attribute <code>BLDG_HT</code> contains building height, in meters.


datasets

Functions for calculating (1) shade height at a single point, (2) shaded proportion of a building facade; (3) a polygonal layer of shade footprints on the ground; and (4) Sky View Factor value at a single point. Typical inputs include a polygonal layer of buildings outline along with the height of each building, sun azimuth and sun elevation. The package also provides functions for related preliminary calculations: converting polygons to line segments, finding segment azimuth, shifting segments by azimuth and distance, and constructing the footprint of a line of sight between an observer and the sun.

Michael Dorman

shadow

R Package for Geometric Shade Calculations

build function

A <code>SpatialPolygonsDataFrame</code> with 4 features and 2 attributes:
<dl> </dl>

build: Polygonal layer of four buildings.

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Details