Space Syntax

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Comment by Karlo54 on September 27, 2017 at 12:37am

Hi Pirouz,

I am working for construction company  under design department, i would like to ask if its allowed to install and use your plugin together with galapagos to study space planning ideas? e.g. study  possibility of building core planning iterations. Thank you.

Comment by Pirouz Nourian on August 13, 2017 at 5:42am

Hi Romero, sometimes you have to restart your machine to get to see the new plugin running in your GH; I guess you have done this already though... Have you checked if your Rhinoceros is up to date? Rhino/tools/options/update

Comment by Romero Barro on August 12, 2017 at 5:43am

Hi Pirouz,

I am trying to install syntactics on my desktop but can't seem to get it to work. I've tried using the installer and copying the gha file to the libraries folder, made sure it isn't blocked or anything, but still it never shows up after i open grasshopper. I've tried this several times, running as administrator and not, but still it never works. Any idea you have as to what might be causing this?

Thanks!

Comment by Pirouz Nourian on May 3, 2017 at 12:22pm

Hi Matthew, thanks for your kind words! happy to hear you find the tools useful. Perhaps you can follow the instructions/pseudocode in my PhD and make a 3D version of this algorithm with the help of Kangaroo. I can then translate it to C# and include it. 

Comment by matthew naivasha on May 2, 2017 at 1:32am

Hi Pirouz,

really appreciate your help. I am currently installing the new version of cheetah and will have a look into the Spectral Graph Drawing tool. I have read through a couple of the chapters in your phd and now have a better understanding of the Force -Directed Drawings and why I was not achieving a good result. The list of areas, spaces and connections I was using for input were a bit complicated. I will simplify and have another go. Love your work : )  

Comment by Pirouz Nourian on May 1, 2017 at 8:45am

Hi Matthew, just tried to open your Rhino file, but it is not saved properly as a Rhino file. Can't open it. Anyhow, I am familiar with this question. The thing is, a coin graph like the one you expect from a Force-Directed Graph Drawing algorithm might not be possible to draw given the list of areas, imagine fitting a 2 Euros coin in the middle of four 5 cents coins. It does not fit. A force-directed drawing algorithm is a heuristic algorithm; meaning it is not guaranteed to work; but it often does. It is theoretically not guaranteed to converge to a solution. If you would like to see something sensible you can lower attraction and repulsion to get a better picture of the situation. You can also use the 'Spectral Graph Drawing' tools of Cheetah (only the new version available on the forum) or Spider Web for getting a picture of your spatial network.  

more info on the force directed algorithm and the whole process:

http://abe.tudelft.nl/index.php/faculty-architecture/issue/view/474

Comment by matthew naivasha on May 1, 2017 at 8:01am

Hi Pirouz,

I'm having some trouble producing a functional Disk Graph Drawing that uses the NGV output from the Force Directed Drawing component. It appears that the repulsion & attraction forces are not performing correctly. I continue to get an error message from the Disk Graph Drawing component that reads:1. Solution exception:Object reference not set to an instance of an object. See posted files Norwst_02.ghNorwest_02.3dm

Comment by maryam on March 23, 2017 at 3:06am

Thanks Rich & Pirooz

I'll try my best
Hope to succeed

Comment by Pirouz Nourian on March 23, 2017 at 2:26am

Hi Richard, thanks for the hints. It's funny why one sometimes feel uncomfortable mentioning GH :)). Could you please point to some of these Field-of-View algorithms implemented in GH? Have you ever tried using this one: http://www.cse.chalmers.se/edu/year/2015/course/TDA361/grid.pdf

Comment by Richard Schaffranek on March 22, 2017 at 8:53am

Hello Maryam,

I don't think it is a depthmap upgrad. If you look up the paper and take a look at figure 4 / 5 you see the standard Rhino3d Isocurve display of cubes. For some reasons people do not want to say, it was done with grasshopper....

If your up recreating 3D IsoVist analysis I suggest to find a good 3d FOV algorithm - there are some around in GH forum. Once you have determined what voxels are visible form a  voxels you can use spiderweb to run BFS and than compute what kind of integration Value you would like to compute (RA,RAA,I).

However these things get very pricy (computational wise) as visualGraphs are always very dens.

I was thinking of implementing BFS on GPU at one point, than things should be a bit faster...

Best

Richard

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