algorithmic modeling for Rhino



SpiderWeb is a .NET library providing functionality for preforming calculations on graphs. The library is created with a special focuse on the integration of graphs and graph related theroies (e.g. SpaceSyntax) in parametric design envoirnments. Therefore special Versions are avalible for:

DesignScript (planned)

Any feedback, questions or critic is welcomed.


General introduction into graph theory

Documentation and samples

.NET documentation for SpiderWebLibrary.dll and GH_SpiderWebLibrary.dll

Location: Vienna
Members: 256
Latest Activity: Sep 28, 2020

Discussion Forum

Measuring Location Density with Spider Web 1 Reply

Hi!I would like to know if there is a way to measure in Spider Web the…Continue

Started by Md01. Last reply by Richard Schaffranek Dec 7, 2018.

can someone show me the definition 5 Replies

can someone show me the definition    and i cant find any example of spiderweb,can someone…Continue

Started by wiku. Last reply by Ukendt Kunstner Nov 3, 2018.

Shortest Path through 3D Mesh 2 Replies

Hi!I've been trying to come up with a definition that will allow me to make one continous polyline of mesh edges to allow me to print it with a 3d extruder on a robotic arm.I haven't used spiderweb…Continue

Started by Louise Wotton. Last reply by Louise Wotton Dec 7, 2017.

shortest path angular component disappeared after 3.2 4 Replies

Hi ! i am very interesting in combine space syntax with grasshopper , and i have seen the 3.2 version spider had "shortest path angular" "shortest path"component to calculate the segment angular…Continue

Started by veaturn. Last reply by Richard Schaffranek May 17, 2017.

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Comment by Richard Schaffranek on September 16, 2014 at 1:57

Dear group,

We would like to bring the following workshop to your attention:

Generative Syntax in Architecture and Urban Design
by Richard Schaffranek (Vienna University of Technology), Pirouz Nourian (TU Delft)

Abstract: There are a few theories that describe and explain the role of spatial arrangement on the social interactions of people in built environments, best known of which is called Space Syntax. The term syntax, taken from linguistics, here refers to the [spatial] structure of the whole, as opposed to morphology, which looks at the qualities of individual items. Using these theories, we can analyze existing spatial configurations and in a way measure their socio-spatial performance. However, theories and methods for systematically generating spatial arrangements of certain properties are rare or not put into practice. Combining analytic theories (mostly based on graph theory) with the generation of geometry is at the core of the workshop. In this workshop, we will introduce computational methodologies that can help in generating spaces with known syntactic properties. Three toolkits and methodologies will be introduced: SpiderWeb, Syntactic and Configurbanist.

You can also visit the Workshop Page for further details:

The workshop will be held as part of the  Conference "Advances of Architectural Geometry 2014" at the UCL from 18 - 21 (20,21 workshops) of September. It is possible to register for the Workshops independent of the conference.

To do so please follow this link:

Best regards

Pirouz Nourian
Richard Schaffranek

Comment by Richard Schaffranek on July 4, 2014 at 10:14
Hmm, can't realy tell....

Maybe you can ZIP the project an send it VIA mail. So I can have a look? Never tested the library outside grasshopper scripting components...
Comment by Hugh Groves on July 4, 2014 at 3:30

Using GH_GraphVetexList visual studio is throwing the following error:

Error    1    The type 'Grasshopper.Kernel.Types.IGH_Goo' is defined in an assembly that is not referenced. You must add a reference to assembly 'Grasshopper, Version=, Culture=neutral, PublicKeyToken=dda4f5ec2cd80803'.    H:\Load Takedown Tool\LTDT SVN\Load Take Down Tool\Components\Component_TributaryAreaAnalysis.cs    165    13    Load Take Down Tool

Unfortunately I *do* have a reference to Grasshopper and the correct version. Any ideas?

Comment by Hugh Groves on June 23, 2014 at 10:22

Hi, could you please take a look at this discussion when you have a chance:

Comment by Richard Schaffranek on February 3, 2014 at 6:06

Will include this in the next release...

Comment by Richard Schaffranek on February 3, 2014 at 6:06

You can get the StartingPoints/EndPoints of an Eulerian Path but the path it's self not, but actually it is rather trivial if you know a little vb or c# the Algorithmen can be found:

and an Introduction of how to use SpiderWeb Library within VB/C# components can be found under:

there is also a .NET documentation (see link a both)

Comment by Vicente Soler on February 3, 2014 at 3:46


Is it possible to solve the Euler path of a graph using Spider Web? I want to order all the vertices of a graph to create a polyline that goes through all the edges of the graph but never twice.

Comment by Samane on December 16, 2013 at 7:00

Thanks Richard!

Comment by Richard Schaffranek on December 16, 2013 at 6:14
Comment by Samane on December 16, 2013 at 3:52

Hi Richard, 

Thanks for your reply. Under security, there wasn't any option related to blocking or unblocking! My windows needed some updates though. Now everything works fine! :) 


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