Sun Charting Program?

radiance-general
1

Apologies if this comes through twice... not sure if I sent it to the
correct address the first time.

I have run across a few times on the web, diagrams that show the sun
position over the course of say 6 months.
I can't recall what that chart-type is called, but it looks somthing
like this:
http://www.rastermon.com/images/SunPath.gif

I used a tool from University of Oregon,
http://solardat.uoregon.edu/SunChartProgram.html

then Photoshop'd my obviously fake green line indicating the sun's
position.
They show up in these figure-8 patterns.

Anyone know a way to produce them?

Thanks
Rob F

2

Fitzsimmons, Rob wrote:

I have run across a few times on the web, diagrams that show the sun
position over the course of say 6 months.
I can't recall what that chart-type is called, but it looks somthing
like this:
http://www.rastermon.com/images/SunPath.gif

I used a tool from University of Oregon,
http://solardat.uoregon.edu/SunChartProgram.html

then Photoshop'd my obviously fake green line indicating the sun's
position.
They show up in these figure-8 patterns.

Anyone know a way to produce them?
  
Hi Rob,

Axel Jacobs has a nice page explaining these diagrams here:

http://www.learn.londonmet.ac.uk/packages/clear/visual/daylight/analysis/hand/sunpath_diagram.html

Ecotect is one commercially-available program that can produce these charts. Francesco Anselmo created a python script to overlay these on a Radiance fisheye view, which is very cool, but I never was able to use it correctly.

The figure eight pattern is called an analemma, and there are some cool links with info about this as well:

http://solar-center.stanford.edu/art/analemma.html
http://www.uwm.edu/~kahl/Images/Weather/Other/analemma.html
http://www.analemma.com/

3

Thanks Rob
I'll check 'em out

···

-----Original Message-----
From: [email protected] on behalf of Rob Guglielmetti
Sent: Tue 1/8/2008 5:41 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] Sun Charting Program?

Fitzsimmons, Rob wrote:

I have run across a few times on the web, diagrams that show the sun
position over the course of say 6 months.
I can't recall what that chart-type is called, but it looks somthing
like this:
http://www.rastermon.com/images/SunPath.gif

I used a tool from University of Oregon,
http://solardat.uoregon.edu/SunChartProgram.html

then Photoshop'd my obviously fake green line indicating the sun's
position.
They show up in these figure-8 patterns.

Anyone know a way to produce them?
  
Hi Rob,

Axel Jacobs has a nice page explaining these diagrams here:

http://www.learn.londonmet.ac.uk/packages/clear/visual/daylight/analysis/hand/sunpath_diagram.html

Ecotect is one commercially-available program that can produce these
charts. Francesco Anselmo created a python script to overlay these on a
Radiance fisheye view, which is very cool, but I never was able to use
it correctly.

The figure eight pattern is called an analemma, and there are some cool
links with info about this as well:

http://solar-center.stanford.edu/art/analemma.html
http://www.uwm.edu/~kahl/Images/Weather/Other/analemma.html
http://www.analemma.com/

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