algorithmic modeling for Rhino



A collection of useful geometry tools.  The plug-in includes utilities for mathematical forms, paneling systems, structures, and workflow.

Members: 852
Latest Activity: Jun 24

Download the Latest Version at Food4Rhino

  • A ClickOnce installer is provided for quick installation on Windows.
  • A ZIP package download is provided for manual installation.

Discussion Forum

LunchBox Machine Learning Components not working 3 Replies

Hello all, I'd appreciate some advice/help on how to fix the problem I have which can be seen in the screenshots.I tried fixing it many times before posting here - through the common routes such as…Continue

Tags: mixture, gaussian, learning, machine, lunchbox

Started by rust_1999. Last reply by williamjacob Jun 24.

Wonderful article. 1 Reply

Hello, I am unable to load Grasshopper. I have Rhino 5 64 bit installed on my Windows 10 PC. When I try to load it, the error message reads "Error loading Grasshopper: could not load file or assembly…Continue

Started by Andy Murray. Last reply by Kenneth Navarrete Mar 31, 2023.


hi,i have created a multiple bake function via lunchbox-bake:- toggle all "object bake" with 1 boolen-button - works- define layer name (for rhino) - works - geom,etry is baked at the defined layer…Continue

Started by Zdenek Fajfrlik. Last reply by Kenneth Navarrete Mar 30, 2023.

Lunchbox - select last row 1 Reply

Hello,I want to write things from grasshopper to excel.Now I want my starting row to be the row after the last filled row. Just like is possible in excel with vba.Can someone help me with…Continue

Started by Eef. Last reply by Kenneth Navarrete Mar 30, 2023.

Comment Wall


You need to be a member of LunchBox to add comments!

Comment by Sergey Dmitriev on March 13, 2018 at 11:45am

Run with Rhino64 to have all the components!

Comment by Dmitrii Karpovich on March 13, 2018 at 11:40am

I had the same, Windows 7. I used the mixed installation of the previous version of the plug-in with the new.

Comment by m.omalley on March 13, 2018 at 9:09am

I'm having the same issue as Madeline Spinski, Machine Learning tools are the only components appearing. Also on Windows 10. 

Comment by Sergey Dmitriev on March 12, 2018 at 5:47am

Run with Rhino64

Comment by Madeline Spinski on February 17, 2018 at 5:10pm

I installed Lunchbox and the only tab that shows up in Machine Learning, all the other tools aren't there. I've tried uninstalling it and reinstalling but it doesn't change. Using windows 10

Comment by Andrew Schiffer on October 18, 2017 at 10:30am

Having a problem with the excel read component. 

I get this error message...

System.NullReferenceException: Object reference not set to an instance of an object.
at Grasshopper.Kernel.GH_Component.GH_StructureIterator.SetDataTree(Int32 index, IGH_DataTree tree) in C:\dev\grasshopper\1.0\root\src\GH_StructureIterator.vb:line 1296
at LunchBox.WF_ExcelReadNew.SolveInstance(IGH_DataAccess DA)

why and how to fix...

Comment by Jim Marsh on August 13, 2017 at 10:49am

Has anyone used the new machine learning components? I don't really know where to start with them, but I want to learn.

Comment by jens jacob jul christensen on April 6, 2017 at 3:29am


I am trying to write a script that tesseltes regular hexagons across a surface using the hexagon cells panel. So that no matter the input surface/rectangles dimensions- those hexagons are as close to regular as possible. I know that the width-to-height ratio of a hexagon resting on a side is 2*sqrt(3)/3 (to calculate number of U to v tiling) but I fail to understand the t-parameter and I'm unable to attain the regular hexagons. Can you help?


Comment by Nathan Miller on March 21, 2016 at 9:52pm

Dear all,

Thanks for all of the continued interest. To be honest, I haven't been keeping tabs on this group as much as I would like since I've started my new business.

I have released a new version of LunchBox over at Food4Rhino that you might be interested in checking out.  The new version is provided as a ClickOnce installer as well as a ZIP file containing the latest plugin files. Hopefully by providing both it is easier for everyone to get up and running.



Comment by bea franko on November 26, 2015 at 2:36am

when using the excel read (legacy), i get this error:

0. System.Runtime.InteropServices.COMException (0x800401E3): Vorgang nicht verfügbar. (Ausnahme von HRESULT: 0x800401E3 (MK_E_UNAVAILABLE))
   bei System.Runtime.InteropServices.Marshal.GetActiveObject(Guid& rclsid, IntPtr reserved, Object& ppunk)
   bei System.Runtime.InteropServices.Marshal.GetActiveObject(String progID)
   bei LunchBox.WF_ExcelRead.SolveInstance(IGH_DataAccess DA)

any ideas?

thank you!


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