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Index › Programming Questions & Help › Programs › Simple layout graph already built
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Simple layout graph already built? (Read 1137 times)
relaxedguy
Simple layout graph already built?
Mar 30th, 2009, 4:28pm  
I have a simple graph that has a number of people and companies as nodes connected with edges defined as "owns", "works for" and so on.

Originally built with Prefuse, I'm looking to update the data and want to add a few simple bells and whistles like clicking on a node brings up a box with additional information.

I can't find anything prebuilt that does this and I'm not sure about digging deep into processing if there is something easier to work with.

Here's my original attempt, out of date but you get the idea.
http://onlinedatingpost.com/files/prefuse/

Is there something in processing that will enable me to link up my datafile and display things looking a bit more polished and with my additional criteria?

Closed thing I've seen is Many Eyes at IBM, but I'm not sure I want my data hosted there.

Thanks!
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relaxedguy
Re: Simple layout graph already built?
Reply #1 - Mar 30th, 2009, 4:30pm  
sorry about the multiple posts, the form was throwing an error.
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jeffg
Re: Simple layout graph already built?
Reply #2 - Mar 30th, 2009, 8:26pm  
If your dealing with less than 500 data points, traer.physics is a really nice library that plugs into processing.  You pretty much just specify the nodes and edges and it does a spring layout diagram.  I just read n the exhibit discourse where JohnG had used JGraphT.  There are several nice examples for tree layouts in the forum, just give a search for spring layout or something similar.  I just looked at a nice one by Anthony Mattox that connects to Wikipedia... http://wikiweb.anthonymattox.com/
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Cedric
Re: Simple layout graph already built?
Reply #3 - Mar 31st, 2009, 2:52am  
First time i heard of prefuse...
would be great if there would exist some libraries for processing compared to prefuse.
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... twitter.com/CedricKiefer
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PhiLho 
Re: Simple layout graph already built?
Reply #4 - Mar 31st, 2009, 3:43am  
Interesting data, maybe you should put a weak, invisible link between main separated node so they don't go so far away from each other.

Mmm, it looks like Many Eyes is using Prefuse, so I am not sure if you will gain anyway.
As the others pointed out, using traer.physics is a possible solution. See, for example, Webpages as Graphs (eg.: this one) which isn't so far from your application.
And indeed, you can probably display a tooltip when hovering a node.
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relaxedguy
Re: Simple layout graph already built?
Reply #5 - Apr 2nd, 2009, 6:41pm  
Thanks for the input. I remain stunned that there isn't a simple Flash applet for this after 5 years.

People aren't going to use this stuff when we have to rely on programming knowledge such as "Attraction getAttraction( int index )" that makes me run away and having to use traer along with processing, too much work.

Someone will create a Flash environment that does this easily I hope, will wait until then and continue to update my dataset with my prefuse applet until something better/easier comes along.

Processing is amazing if you have a lot of time to learn yet another language, love the demos.
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