Referencing a perforated RADIANCE mixfunc material with perforate.cal

I am trying to render a mixfunc material which uses the "perforate.cal" cal file and applies perforations in the y-direction to a plane with the metal material "aluminum"

I have the perforate.cal file in the Radiance/lib folder

Everything works fine when i assign materials directly to the "CreateHBSrfs" component, such as:

void metal aluminum
0
0
5 0.8 0.8 0.8 0 0.0

But when i connect the mixfunc, i get an error when i run the simulation.

void mixfunc y_perforation
6 aluminum void y_hole perforate.cal -s 0.1
0
1 0.5

error is:

[KeyNotFoundException]: Void

...Does not seem to be able to find something

I want to make sure i am defining the materials appropriately in HB

Any suggests, as always, APPRECIATED !

(file attached)

Attachments:

Screen Shot 2014-08-27 at 12.20.19 PM.png, 155 KB
005_glareAnalysis_v10_runItAll_SFFB_geometry.gh, 612 KB

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Replies to This Discussion

Permalink Reply by Mostapha Sadeghipour Roudsari on August 27, 2014 at 4:59pm

Hi,

I didn't open your file but I have two suggestions based on the material definition that may help:

1. I think you cannot pass void as one of the materials. If you want to create a perforated metal then I you can create a glass with 100% trans. and pass it as the first material.

2. Make sure to copy perforate.cal to the study folder or give it the full path

void mixfunc y_perforation
6 aluminum airGlass y_hole c:/radiance/lib/perforate.cal -s 0.1
0
1 0.5

Permalink Reply by Octagon26 on August 27, 2014 at 5:32pm

1 and 2 did the trick!

thanks

Permalink Reply by mohamed aly on May 8, 2015 at 10:22am

Hi, I have a mixfunc .cal material That I a am struggling with. I have 3 materials created the last one is the .cal that includes the other 2 but I keep getting this error. Am I doing it in a wrong way?

Please advise.

Permalink Reply by Mostapha Sadeghipour Roudsari on May 10, 2015 at 3:23pm

Hi mohamed. Hard to tell. Can you upload your [simplified] file?

Permalink Reply by mohamed aly on May 10, 2015 at 7:36pm

Hi Mostapha,

Here you go...

Thanks

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