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russell southard posted a discussion

russell southard posted a discussion

simple surface/quad mesh

Hi everyone,I am trying to build a single surface and a quad mesh like the surfaces I am attaching.  As of right now the surfaces are trimmed from larger surfaces and then manually manipulated to get the form.  I need to get the mesh quads or single surface to move forward.  I would really appreciate any help.  ThanksSee More

Rush posted a discussion

Rush posted a discussion

Hi everyone. I need some advice/help with a grasshopper script. I've attached an image below for what I want it to be. Its to do with attractors/repellers points and curves. want to have a lot of points at the center of a circle. The circle isn't necessary for the grasshopper definition but its just a bounding box for me. From there, I want the particles to be attracted to the curves but to never go inside of each box. As shown on the After image, I want these particles to start accumulating at the edge of the box. If possible, I would like them to accumulate in 2D and not have any overlap but I know that that is very difficult. I also understand that I would probably need Hoopsnake which I downloaded and installed. So far what I have is this. can't figure out attractor points pretty much. Thank You for your help.See More

Alireza added a discussion to the group Ladybug + Honeybee

Alireza added a discussion to the group Ladybug + Honeybee

Honeybee Export to OpenStudio

Hi,I have encountered an error using Hoenybee Export to OpenStudio component as:"Runtime error (MissingMemberException): 'EPZone' object has no attribute 'recirculatedAirPerArea'Traceback:  line 2901, in main, "<string>"  line 2989, in script"The error rises when I run the component to write an OS file. I would appreciate if you could help me about the cause of the error and how I could find a solution for it.Please find attached a snapshot of the component with the error warning.Thank you,AlirezaSee More

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Comment by Martin Siegrist on September 21, 2013 at 3:06am

Here's what you need to do:

1. in your spreadsheet, delete column B. It is empty and I guess not needed. This will make it easier to retrieve the right data afterwards. I made an example spreadsheet, since your file was not provided...

2. compute X values, marked blue in my spreadsheet. You can see how the first item is empty, it says <empty>. This needs to be culled, so cull index 0. Now you only need the first branch of that tree. That's done with aTree Branch component, you need to choose the first path {0;0}. This first path contains your X values

3. Do the same thing for Y values (orange), however flip the matrix first. Connect this branch to Y in the Pt component. You'll notice that by grafting Y in the point component you get a grid.

4. For the Z values, you need to cull the first row and column of your spreadsheet data. You see in my example that I culled item 0, flipped the matrix and culled again. 

5. I generated a mesh from points and mesh edges just to give an example....

Screenshots attached. 

Comment by OLu Fat on July 10, 2013 at 2:04pm


Im a beginner on rhino trying to create a 3D model to be exported to a CAD software. The challenge I am having is in processing the .txt file into a format usable by Rhino. I got some ideas online relating to importing .txt files as point clouds. It worked when i used simple XYZ points separated by commas (e.g




But the format of my .txt file is an array of X (vertical),Y(horizontal) and multiple Z values as shown in the attached image. Every time i import this file, I see nothing so i believe it has to do with the format of my .txt file. 

Does anyone have any advice on what to do? Thanks for your help

Comment by Onrender on June 27, 2013 at 7:38am

I am a beginner, and would like to ask if that possible to save GH data as an object file like a revit families and simplify GH definition into a small option panel and playing with my standalone GH model in Rhino?

Comment by sara ev on May 22, 2013 at 5:53am

is there any step by step grasshopper tutorial?

Comment by Vito Losavio on April 23, 2013 at 8:22am

On the web the first manual about PanelingTools for Grasshopper !

Rajaa Issa has released the first manual for "PanelingTools for Grasshopper Primer (PDF)" , which contains various exercises and the related sample files that can be downloaded separately, with the definitions in Grasshopper, "The Primer Examples and Tutorials" .

Here the page's link:

In rete il primo manuale su PanelingTools per Grasshopper (PDF)!!!

Pagina di riferimento:

Rajaa Issa, ha reso disponibile il primo manuale "PanelingTools for Grasshopper Primer (PDF)" , che raccoglie varie esercitazioni ed i relativi file di esempio, scaricabili a parte, con le definizioni in Grasshopper, "The Primer Examples and Tutorials" (l'inserimento obbligatorio della propria e-mail non comporta nessun verifica o obbligo).

Comment by Matt Sederberg on March 28, 2013 at 8:11am

Hi guys,

We're working on enhancing our T-Splines - Grasshopper integration, and exposing more T-Splines features. I'm interested to hear from anyone who is interested in this workflow - we'd like to learn more about what you'd like to do. Please feel free to post comments here or on our T-Splines forum -

Comment by ert tree on February 23, 2013 at 1:17am

i tried similar think in 2 dimensions (plane). I want to have predifined rest lenghts (imported from excel), knots in 2d are not connected. Should i do it with mesh or spend more time looking for errors.


Comment by ert tree on February 22, 2013 at 3:13pm

I was missing a flatten command in kangaroo :)

I uploaded cable to the googledocs, maybe someone is interested...

So how is with the wind?

Comment by ert tree on February 22, 2013 at 2:39pm


I am working on a hanging line from 2 anchored points. I did it in grasshopper, applied some kangaroo physics. A bit stuck on applying g-force on the cable.

Any suggestions?

I would also like to blow in the cable and strech it with the wind?

Does it have to be mesh to use wind force?

Comment by PurrDaddy on January 14, 2013 at 5:44pm

You are the second person to suggest route.  I will have to take a look Symvol.



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