Hi, @Arthur

Grasshopper
,
1

In the dispersion analysis section, once the simulation is complete, I want to export the results, but nothing happens.

How can I get the data numerically?
I’m using Rhino version 8 with the latest Pachyderm update.

Thank you.

2

I don’t think user name tags work in topic titles.

@Arthur

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3

Thanks, @martinsiegrist.

@SG11 - You need to be more clear. There is no ‘dispersion analysis’. What command did you use? Which module were you using?

Arthur

4

This is the result, but I would like to get it numerically and not graphically, I hit export and nothing happens

Captura de pantalla 2025-03-17 200706
Captura de pantalla 2025-03-17 2007061186×655 43.6 KB

5

@Arthur I’m using Timedomian Models in Rhino 8 to calculate the dispersion coefficients of a 3D model that I later loaded. When I calculate, the results graph appears, but when I click the export button, nothing happens. I’d like to get the data numerically in Excel.

And where can I find more information about Timedomian Models?

Thank you very much, from Colombia.

6

Hi @sebas1 ,

I see. You meant scattering analysis.

Thanks for finding this interface issue. We are still trying to find all the things that don’t work right after the conversion to .net core and eto. This will require an update to the software.

I can’t do it right now, but what’s your timeline?

Arthur

7

hi @Arthur

Okay, thank you very much for the clarification and for the contribution of the entire Pachyderm tool. I expect to get this result in about a month.

Another question I have is about the three graphs. There’s one in blue, one in red, and one in green, but they don’t have legends, so I don’t know what each one refers to.

I’ll be very attentive to future Pachyderm updates.

Thanks.

8

Hi,

Apologies this took me a while. I have published a new version that addresses some of this. Please give it a try, and see how it works for you.

As for the three graphs, I did not answer, because I could not remember… it turns out I did something really cool there. There is a legend now. The Blue graph is the scattering coefficient based on a spherical plot of the scattering coefficient - so accounts for the 2 dimensional nature of the scattered surface. The Red and Green plots are the scattering coefficient based on the geometry in the X dimension and Y dimension specifically - so the 1 dimensional nature of the surface in that dimension.

So if you have modelled something that only varies in one dimension, you will want to reference the scattering in that dimension, not the 2d result. This is what, for example, RPG or RealAcoustix would do.

Some additional advice - Make sure you use a large enough radius, and place the hemisphere above the sample, not intersecting with it. I was able to get pretty great results with a 2-meter radius, and with a minimum 2000 Hz. max frequency. Be aware, though, this will be fairly hungry for RAM. My model used about 15 gigabytes to execute that calculation.

Now - you should be able to plot your result to an CSV file. Please give that a try, and let me know how it works for you.

Arthur

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