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Need a tool/software that takes the illuminance map output and computes the daylight autonomy values.

asked 2014-11-07 12:32:59 -0600

hema gravatar image

updated 2017-05-04 08:54:20 -0600

I have Illuminance output in .csv format from energy plus. I want a tool to calculate DA which can take:

  1. .idf file type as Input
  2. .csv file type as Input
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answered 2015-02-07 21:55:40 -0600

If the .csv file looks similar to Daysim's .ill file Honeybee can calculates the values for you without re-running the analysis.

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answered 2014-11-07 15:50:04 -0600

updated 2014-11-08 22:04:27 -0600

In general, I know of no available tools that would take either of these input formats and compute DA, unfortunately. Again, you can use a spreadsheet to take the illuminance values (option two in your post) and plot them, or you could use OpenStudio to take an idf (option one above -- assuming it has all the daylighting objects properly placed) and run it through an annual simulation with Radiance, which will produce a summary csv file which does a lot of the work for you.

Many of the other tools out there (e.g., Honeybee, DIVA for Rhino, SPOT) that are geared toward climate-based daylight modeling have their own methods for reporting DA and other dynamic daylight metrics, as well. In most of these cases you will need to build a new model in the host program(s) before running the analysis and getting your desired results.

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Note: this question is tagged spatial daylight autonomy, which is a totally different animal. sDA and its companion metric ASE are quite a bit more complicated to calculate than DA, or cDA and UDI. There are a few projects that are working on making these metrics easily available to users, but to my knowledge IES-ve is the only tool currently available that claims to do it.

rpg777 gravatar image rpg777  ( 2014-11-09 11:02:59 -0600 )edit

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Asked: 2014-11-07 12:32:59 -0600

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Last updated: Feb 07 '15