HoneyBee:Basic Illuminance Simulation Problem

Replies to This Discussion

Permalink Reply by Willy Tsui on April 1, 2017 at 11:26pm

I m not sure what you are trying to do. Do you mean you are trying to view the result on the rhino window?

Permalink Reply by Mostapha Sadeghipour Roudsari on April 2, 2017 at 6:42am

and just looking to your image you need to set write and run to True.

Permalink Reply by Chung on April 2, 2017 at 9:58am

Hi Mostapha,

I've set write and run to True and received error msg that reads 'cannot evaluate gradient with zero-length range' and i've checked the illumance value with panel - do you think that where the problem is?

Attachments:

• Illumanaceread.JPG, 73 KB

Permalink Reply by Chung on April 2, 2017 at 9:41am

Hi, 

Thank you for your reply! What I'm trying to do is something that is similar to the sunlight study but with a more precise unit measurement (in which case I'm aiming for lux (luminance). 

Thank you )

Attachments:

• SunlightStudy.JPG, 57 KB

Permalink Reply by Willy Tsui on April 2, 2017 at 4:03pm

So I am assuming you are trying to do a grid-based analysis to get illuminance value during a certain hour, right?

After taking a quick look at your file, I believe there is something that would help.

1.)disconnect the fly to the ladybug_ladybug component.

2.) specify the grid size in gentestpts component.

3.)Grasshopper is default to run in meters, make sure your rhino is also in meters. 

Permalink Reply by Chung on April 2, 2017 at 7:47pm

Hi there, 

I've did the files again and still cannot get it to work. But the test points are working for sure - Would the problem be because the site for analysis is flat instead of internal spaces? 

Thank you!

Attachments:

• TestPoints.JPG, 181 KB
• sas (1).JPG, 370 KB

Permalink Reply by Willy Tsui on April 2, 2017 at 9:51pm

Could you upload your GH and rhino files please?

Willy

Permalink Reply by Chung on April 3, 2017 at 4:57pm

Hi Willy,

Here are the files. Thank you for your help! 

Attachments:

• BasicIllum.gh, 946 KB
• Site_Analysis.3dm, 3.1 MB
• GBR_London.Gatwick.037760_IWEC.epw, 1.5 MB

Permalink Reply by Willy Tsui on April 3, 2017 at 10:19pm

i just check your files and I found a couple thing

1.) your grid size should be >0

2.) Try to assignment radiance materials to the surface (it would use default materials from honeybee, like roof, exterior wall)

3.) Make sure you time is set correctly (you have 1 am in your file, so there would be no light :) )

4.) I am not sure how your visualization works but I put two methods that would help visualize the results.

Attachments:

• BasicIllum.gh, 959 KB