Problem with Radiation Analysis

grasshopper ladybug-legacy
6

I re-installed Ladybug, but unfortunately the radiation analysis still does not work.

7

Try another weather file.

Did you tried what i suggested above?

8

Got it to work! Both of those methods did the trick. I guess I just had to toggle UseOldRes to False a few times before it actually registered and recalculated the sky radiation.

Thanks a lot for the help Abraham.

9

No problem.

But now i’m having a question for Mostapha, which is kind of related:

The genCulativeSky calculation results are supposed to be located at c:\ladybug. I don’t find it there. Do you know where they are now?

10

Hi Abraham,

As Chris mentioned on Github, if the user doesn’t have full access to C:\ then the folder will be at C:\Users%USERNAME%\AppData\Roaming\Ladybug\ to avoid any potential permission issues.

11

I tried reinstalling Ladybug and changing the EPW file and it’s still all blue… Any suggestions?

12

Check the normal directions.

-A.

13

I tried flipping them, and exploding the brep into individual surfaces. It’s still showing up all blue.

I’ve attached the files. Do you have any other suggestions? Thanks for your help.

Radiation Analyis.3dm (3.48 MB)
Radiation_Analysis-.gh (397 KB)
USA_CA_San.Francisco.Intl.AP.724940_TMY.epw (1.58 MB)

14

It works for me as it is.

-A.

15

I figured out that there was a problem with my EPW file. Thanks for your help.

16

I have the same issue as perscribed above (producing script, downloading EPW file, toggling useoldres." But the results are the same.

My intentions for the analysis is to find the hot and cool spots on the groundp lanes for pedestrians so I can design a shading system (later). In a sense the grond is the geometry and the buildings are the context.

Any help on troubleshooting this would be appreciated!

DTLA_Master_MV_ladybug_edit_03.3dm (3.93 MB)
radition_analysis_01.gh (1.8 MB)
USA_CA_Los.Angeles.Downtown.722874_CTZ2010.epw (1.48 MB)

17

Check you normal directions. They should point outwards (dir command in rhino).

-A.

1 Like
18

Hi Abraham,

Thanks for your input! Changing both the mentioned items have provided me the same results…

Any other tips I should be looking at?

Thanks

19

I believe i answered to this in another discussion … did you posted this twice?

It has to be with thenegative distFromSurface you provided. Give a positive value, like 0.1.

-A.

20

Hi Abraham,

Are you sure this is not a problem with Ladybug?

I just did download the Radiation analysis file from hydrashare.github and set both boolean toggles to true and I get the same results as other users mentioned above.

I did write definition from the scratch and still get the same result.


21

Farzane,

In life there is only one sure thing … :slight_smile:

Though, from your picture, i’m pretty sure there is a normal direction issue. Upload your file (with geometry internalised) or check yourself with the dir command (if rhino model) or show the normals with native GH components.

-A.

22

here is my file, I will appreciate if you check it and help me through this issue.

thanks,

radiation analysis.gh (399 KB)

23

Your file is running fine at my end:

Are you getting any values from the selectSkyMtx?

-A.

24

I get zero for all the days!!!

I changed epw file for different locations but still get the same result.

I run sunlight hour analysis with the same setting and I get the result but it does not work with radiation analysis




25

Probably the problem is with the gendaymtx.exe file.

Check this discussions: 1, 2. If needed download the program here.

-A.