Grasshopper

algorithmic modeling for Rhino

Information

Octopus

Octopus is a plug-in for applying evolutionary principles to parametric design and problem solving. It allows the search for many goals at once, producing a range of optimized trade-off solutions between the extremes of each goal.

Also see octopus.E for custom evolutionary algorithms.

 

Download the latest version on food4rhino

It is part of a range of tools developed at the University of Applied Arts Vienna, and Bollinger+Grohmann Engineers.

 

  • search for single goal + diversity of solutions
  • search for best trade offs between 2 to X goals
  • improve solutions by similarity-goals
  • choose preferred solutions during a search
  • change objectives during a search
  • solutions' 3d models for visual feedback
  • recorded history
  • save all search data within the Grasshopper document
  • save a solution as a Grasshopper State
  • export to text or text files


Octopus introduces multiple fitness values to the optimization. The best trade-offs between those objectives are searched, producing a set of possible optimum solutions that ideally reach from one extreme trade-off to the other.

Based on SPEA-2 and HypE from ETH Zürich and David Rutten's Galapagos User Interface. Developed by Robert Vierlinger in cooperation with Christoph Zimmel, karamba3d.com and Bollinger+Grohmann Engineers.

 

To install:

  • Copy the .gha and .dll file into the Grasshopper components folder 
  • Right-click the file > Properties > make sure there is no "blocked" text
  • Restart Rhino and Grasshopper

 

Some examples are provided here

New commented examples and a brief manual are provided in the download of octopus on food4rhino.

Website: http://www.adrvienna.com
Location: Vienna
Members: 141
Latest Activity: yesterday

Discussion Forum

Where are the 4th, 5th, 6th... N objectives represented?

Hello all,This could be a very banal question. When I have more than 3 objectives where are the "extra-objectives" represented, since it is not obviously possible to visualize more than 1 objective…Continue

Tags: multi-objective, optimization, octopus, axes

Started by lv2311 yesterday.

How to feed the custom first generation to octopus.e component? 3 Replies

Hello everyone,The question is as title shows. I want to define the first generation composing of two sections: one is selected by myself, and the other is generated by random selection. How can I do…Continue

Started by Dan Hou. Last reply by Dan Hou Sep 12.

Meaning of parameters in Octopus export 4 Replies

Hi All / Robert,I am trying to replicate a resultant phenotype parameters/genes from the parameter export. I am finding a hard time to figure out how the parameter values are calculated ( they are…Continue

Started by Faisal Barazi. Last reply by Faisal Barazi Sep 3.

Convergence error 9 Replies

My objective values are no problem. But why do the convergence graphs change little?Continue

Started by Dan Hou. Last reply by Dan Hou Sep 3.

Comment Wall

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

Comment by Dan Hou on September 25, 2014 at 1:55

What is the algorithm to calculate hypervolume metric? Is it HSO?

Comment by Andreas Wilde on July 30, 2014 at 3:12

Can Octopus pick the best solution itself? Where?

How does Octopus deal with multicriteria weighting and multicriteria scores?

Comment by Brian Ringley on July 7, 2014 at 7:20

Haha no prob. You should keep the Awesome tab for the next release. Thanks for all your work in this area.

Comment by Robert Vier on July 4, 2014 at 4:08

Oh this is a mistake in compiling the plug-in, this component was purely for development, and not supposed to be in the official release.

Sorry for the confusion,

Best

Robert

Comment by Brian Ringley on July 3, 2014 at 17:27

Ha I'm getting an "Awesome" tab when I load the Octopus.e gha. What is this thing?!

Comment by William on December 21, 2013 at 5:01

Is there any version of Octopus that works with Grasshopper 0.9.0064? I can load the component, but it crashes whenever I delete it from the canvas.

Comment by Jesus Galvez on November 19, 2013 at 12:29

OK, it seems to be working. Only thing is on each start I only get one generation, instead of many. I guess I have to mess around with the options. 

Also the text is very difficult to read. I didn't realize until now that there were numbers on the fields. 

Comment by Jesus Galvez on November 19, 2013 at 12:20

Hello Abraham, 

the files are unblocked. I can use the Octopus component and upon opening the example files I can see the results of the default calculation. But when I click Start again the log file 01_singleObjective_Diversification_OctopusErrorLog_20131119.txt  says:

Error, reduction of environmental selection did not yield the correct archive size

I have previously used Octopus 0.1 flawlessly.

Comment by Abraham Yezioro on November 19, 2013 at 11:43

You need to unblock the .dll file.

-A.

Comment by Jesus Galvez on November 19, 2013 at 9:02

Hi,

I downloaded version 3.1 and I can't get it to work. I have put files HelixToolkit.Wpf.dll and Octopus.gha in C:\Users\"username"\AppData\Roaming\McNeel\Rhinoceros\5.0\Plug-ins\Grasshopper {B45A29B1-4343-4035-989E-044E8580D9CF}\0.9.64.0\Components\

Octopus appears in the ribbon, and the example files load correctly, but when I click start (calculation), it does nothing. 

Thanks

 

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