How can I perform complex Radiance calculations in Grasshopper that I used to do in the terminal?

grasshopper honeybee
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1

Hello, ladtbug tools experts.

I would like to perform the two Radiance calculations below in Grasshopper, which I have previously done in a Mac terminal.

rcalc -o 'rsensor -h -rd 5000 -vp ${$1} ${$2} ${$3} -vd ${$4} ${$5} ${$6} -vu 1 0 0 SensorFile.dat .' points.txt | sh | rfluxmtx -c $rd -ab 6 -ad $ad -lw $lw - rfluxSky_MF6.rad -i oct/model.oct > matrix/Cdc.mtx
dctimestep matrix/Cdc.mtx skymtx.smx | rmtxop -fa -t -c .33333 .33333 .33333 - > solarIrradiance.txt

I believe I need to use GHPython because I don’t think the existing Ladybug Tools components can perform this calculation.
How should I describe it?
I have attached an incomplete .gh file so you can see what I intend to do.

The description about the command is below.

  1. Calculate the contribution within a specific field of view, as specified in “SensorFile.dat,” using rfluxmtx.
    (This command was adapted from the following site: https://discourse.radiance-online.org/t/create-a-view-matrix-for-three-phase-method-simulating-ceiling- sensors-and-workplane-points/5806/9)
  2. The sky matrix and the contributions are combined to output the solar radiation.

I apologize for my poor English.
Thanks in advance!

1 Like
2

Sorry, I forgot to attach the .gh file.
Please get it from the following link.

3

Yes. You can use GHPython to run custom commands like the ones above.

My question is why would you need to run these commands from inside Grasshopper in the first place?