[GRASS-dev] [GRASS GIS] #3614: r.relief: estimate solar altitude and azimuth for given date and time

[GRASS GIS]

#3614: r.relief: estimate solar altitude and azimuth for given date and time
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 Reporter:  mmetz                                |      Owner:  grass-dev@…
     Type:  enhancement                          |     Status:  new
 Priority:  normal                               |  Milestone:  7.6.0
Component:  Raster                               |    Version:  svn-trunk
 Keywords:  r.relief, r.sunhours, solar          |        CPU:  All
  position                                       |
 Platform:  All                                  |
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 r.relief uses solar altitude (default 30 degrees) and azimuth (default 270
 degrees) to produce a shaded relief. It would be nice to have a mechanism
 to estimate solar altitude and azimuth for a given date and time and the
 current region.

 This could be done with the solpos algorithm as used in r.sunhours, or
 r.sunhours gets enhanced to optionally not produce a raster map, but print
 estimates for the current region's center.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3614>
GRASS GIS <https://grass.osgeo.org>