Fail to read Radiance result for visualisation

grasshopper honeybee-legacy
1

Hi everyone,

I am dealing with an issue using honeybee and Radiance. I have successfully run daylight simulation (grid based analysis) but found error when reading the radiance result (using ‘ReadRadResult’). There are 6 figures attached that you can see.

Looks like this is related to ‘AnalysisRecipe’ where I input skyfile based on epw file (GridBasedSimulation). This generates 3 file outputs for analysis recipe and it leads the simulation to produce the number of data exceeding the number of grid cells (three times of gridcells). I found no error when applying DFSimulation for the analysis recipe because it generates only one skypath output (see figure 2)

Actually, I have solved this issue by using item selector to chose one of three outputs produced by ‘genClimateBasedSky’. It works! (see figure 3) But, when I changed to another output of skypath, the results changed by about 20-200 lux (I just noticed some values in panel). This led me to throw this issue in the forum: which skypath is trustable that I can choose? and or whether myworkflow in grasshopper is not correct? (looks like it’s better to use honeybeeplus but I haven’t explored it yet)
Also, the illuminance value produced in my model is too big (see figure 5). Please give me some explanation about this…

Slide1
Slide1.JPG1280×720 173 KB
Slide2
Slide2.JPG1280×720 212 KB
Slide3
Slide3.JPG1280×720 191 KB
Slide4
Slide4.JPG1280×720 141 KB
5
5.JPG495×527 40.1 KB
6

Here is I attached my gh file

Latihan 2 radiance daylight factor new.gh (847.7 KB)

2

@sunarywend Your grasshooper file maybe have some bug. It opened epw file 5-6 times and ran radiance 2 times.And it gave me some warning as below.
image
image
After ran your grasshooper file,I found a easy bug.It is about the north sign. You set 3 item to climate-base sky, so it generated 3 sky. And ran 3 times for 3 result files.You just need to set 61 to north directly, then your model will be run normally.

image
image.png1237×688 103 KB

1 Like
3

Thanks for your solution. It works!

My grasshopper opens epw file several times because I put three ‘input weatherfile’ objects there. Some of them are applied for EnergyPlus simulation input. In the file you see, I try to integrate input simulation for EnergyPlus and Radiance in one file.

Related to the material, my grasshoper didn’t give me those warnings as you attached.

Cheers,

wendy