[Radiance-general] the solar position algorithm used in Radiance

Pally Sandher pally.sandher at iesve.com
Tue May 29 03:53:34 PDT 2012


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From: Ji Zhang [mailto:hope.zh at gmail.com]
Sent: 29 May 2012 09:15
To: Radiance general discussion
Subject: [Radiance-general] the solar position algorithm used in Radiance

Dear list,

May I ask what is the exact algorithm used by gensky and gendaylit to calculate sun position in Radiance?

i.e. given the latitude, longitude, standard meridian, month, day, hour, what's the formula used in Radiance to produce solar altitude and azimuth angles?

Thanks!

- Ji
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