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how to use BetweennessCentrality

Tue, 31 Aug 2010 15:07:30 +0200

hi to all
i'm trying to calculate the Betweenness Centrality for a network, but i don't understand how to do it.
loaded the network and its tree, I've tried this:

Code:

var graphData:BetweennessCentrality = new BetweennessCentrality();

graphData.calculate(data);

but i don't find any new value in the nodes porperties.
any suggestion?

thanks

Unable to load image from xml

Tue, 31 Aug 2010 08:16:17 +0200

Hi everyone,
Im new to flare,flex....I am working on this by going through examples,then writing something new or adding something new to them.
OK,
I have a xml file from which I collect data...
data1
I use .as file in this call for the text
var ts:TextSprite = new TextSprite(ns.data.name,fmt);

Now I need a image to load..So I did like this...
XML file:

Now in .as

var ur:Loader = new Loader();
ur.load(new URLRequest(ns.data.image));
ns.addChild(ur);

but this doesn't work
Can anyone please help me

Don't show all nodes!

Fri, 06 Aug 2010 10:52:18 +0200

Hi! Do you know how to don't show all the child nodes of a single node. For example, I'd like to see only 5 childs and then, when I press a button, I'd like to see other 5 child nodes and so on.

Because I create a class that read a multidimensional array (in any cell there are a son and his parent node) and then built a tree that follow this structure. But I see all nodes!

Thanks in advance.

Load JSON data in a Tree

Thu, 05 Aug 2010 11:27:37 +0200

Hi, I've this JSON file:

{
"id": "0",
"name": "root",
"data": {
"uno": "value1",
"due": "value2"
},
"children": [ {
"id": "1",
"name": "child1",
"data": {
"uno": "value1",
"due": "value2"
},
"children": []
}, {
"id": "2",
"name": "child2",
"data": {
"uno": "value1",
"due": "value2"
},
"children": []
} ]
}

I want to load this in a Tree (There are 3 nodes, 1 root and 2 child) . How I can do it?

manage multiple datasource

Thu, 29 Jul 2010 10:22:48 +0200

hi to all,
i need to create a prototype for a complex project, and i have some problems.

the first is that i have two different graphml files describing a network: the first about the flows between nodes, and the second one describine the structure of the network.
Is possible to load the second file as tree of the network?

second question:
the project is modular, and the complete network is divided on different graphml files, each one describing a portion of network.
Can i dinamically load the portion of network i need? flare can merge them automatically?

changing the color of an edge from edge to edge

Tue, 27 Jul 2010 15:11:17 +0200

hello,

This is suresh.I am using prefuse in my project and i am new to prefuse.In that i have to give different colors for different edges.Please help me about changing the color of an edge from edge to edge.Tomorrow is my project deadline.Please help me out.........

(means color of an edge should change according edge id)
Thanks in advance.

my mail id: suresh.appana1@gmail.com
(if possible give me reply 2 my mail id)

ForceDirectedLayout move to up

Sat, 10 Jul 2010 17:12:32 +0200

Hi to all,
i can't understand why the ForceDirectedLayout move to up,
also in the demo if you try to let it for a minute the tree slowly move to up,
is there a soluction for this issue?
Actually the only way i found is set continuousUpdates to "false" but i prefer keep it to true.
Thanks
micron

Highighting Edges!

Tue, 29 Jun 2010 00:44:57 +0200

Hi folks,

I've been extending GraphView in a few ways but I've stumbled over this...

I'm trying to highlight edges. More specifically, when I hover over a node, I would like all the edges to and from that node to be highlighted, and when I click on a node, I would like all the edges to and from that node to stay highlighted until the focus group is changed or cleared.

I can obtain both behaviors separately, but not together.

The part I'm confused on (and perhaps this isn't the best way to approach this, let me know!) is this:

How do I construct a predicate for coloring edges when edges don't have, for example, _hover fields? I need a way to set all the edges of nodes in the focus group to have a particular color (that can be temporarily overridden by a hover action on a node that also owns that edge)...

How would I go about this?

Please let me know if you would like code or need clarification..

Thank you!!

How to display jComponents in Nodes

Mon, 28 Jun 2010 09:27:21 +0200

First of all - HI!

Is there any possibility to add some components, like RadioButtons, Textfields ...
to a Node?

I tried to build my own Renderer which extends AbstractShapeRenderer, but had no success in adding a panel with a combobox or something like that.

(at least i can draw an Ellipse )

Thanks for help

Highlight nodes through search function, make edges clickable, filter edges

Wed, 23 Jun 2010 05:32:51 +0200

Hi,

I am trying to make a network with force directed layout. I have following problems and really really need help with couple of major problems:

1. While running search function, currently the matched nodes are made visible and rest all of the nodes are invisible. Instead, I only want to highlight them and after hitting the cross, it should return to the default layout.

2. While clicking on the legend (on Science, Social Science etc), the nodes should only display edges, if the connected nodes are also under the same classification. Currently edges are displayed without the target nodes.

3. Is there a way to make an edge clickable and display the network of both of the connected nodes.

I am trying this from a long long time, and will really appreciate help with any of these points.

My code and file is attached and please let me know, if anything needs explanation.

Many many thanks

Maintain node shape and size while updating

Thu, 17 Jun 2010 17:10:48 +0200

Hello folks.
I'm fairly new to flare and need some assistance.
I'm modifyng the classes in the demo and I'm working with a graph structure loaded trough a graphml file. I added labels and different sizes to my nodes. The labeling is done trough a Labeler which is added to the operator list of the visualisation as such:

var labeler:Labeler = new Labeler("data.label", null, new TextFormat("Arial", "11", "0x00000000", true), null, Labeler.CHILD);
vis.operators.add(labeler);

It works fine. The problem is that I don't know how to personalise my nodes and edges to remain the same after an update is called. I use visitor functions in the createVisu function of the Layouts class:

// personalize nodes
vis.data.nodes.visit(nodeVisitor);

// personalize edges
vis.data.edges.visit(edgeVisitor);

private function nodeVisitor(ns:NodeSprite):void
{
// retrive information from nodes
var text:String = ns.data.keywords;
trace(text);
var keys:Array = text.split(",");

for(var i:int=0; i trace(keys[i]);
}

var label:String = ns.data.label;
if(label.length <= 12)
ns.size = label.length + 5;
else
ns.size = label.length + 8;
}

private function edgeVisitor(es:EdgeSprite):void
{
if (es.data.style==1){
es.lineColor = 0xccffff00;
}
if (es.data.style==2){
es.lineColor = 0xcc99aaff;
}
}

As you can see I use data from my graphml file to compute the node size and the edge color. Here is a sample from the file:

Token+POS+NP+VP+Syntax
n2+n3+n8+,syntactic parsing,syntactic structure,FDG,functional dependency grammar,syntactic constituence,syntax annotation
38

Token+Lemma+POS+WSD+NP+VP+Syntax
n7+n9+n15
45

Token+Lemma+POS+WSD+NP+VP+Syntax+Coref
n10+n15
55

2

1

2

So my question is how can I modify the demo such that when I commute trough layouts the nodes and edges will stay the same.

Using pieLayout on a network

Fri, 11 Jun 2010 11:35:49 +0200

hi to all
i'm trying to do something like this:
http://well-formed.eigenfactor.org/radial.html

but i don't understand how to visualize connection once I've create the donut.
I've tried this:

Code:

_visualization.operators.add(new PieLayout("data.Total",0.95));

_visualization.operators.add(new CircleLayout());

but seems that it creates the nodes two times (see the attachment).
[attachment=566]
Any suggestion?

CloudLayout

Tue, 08 Jun 2010 14:47:16 +0200

Hi Martin

Thanks for the excellent resource. I was looking to create something similar to your CloudLayout example on 34all site
http://goosebumps4all.net/flareLab/cloudLayout.html

Have you shared this code publicly with the community?

cheers

Need your opinion - how to visualize

Mon, 07 Jun 2010 02:12:13 +0200

Hi,
I'm a student, and currently I'm developing an application that visualizes a user's music library.
My data is all the artists, and the similarity between each of them.

What I'm doing now is to represent this information in a graph, where each artist is connected to another artist if they are similar.
My problem is that this way, most artists will be linked together, creating a big mess.

I've tried changing the size of the edges (related to the similarity - the more similar two artists are, the shortest the edge is), but as each node is connected to many other nodes, making the result not good.

I think the ideal solution would be mapping each artist to coordinates x and y. The similar artists would form a cluster. And if the artists weren't similar, they would be far apart. But I don't know how to calculate this coordinates based on the similarity...

I've tried everything, but I can't achieve the visualization I wanted... Does anyone have an idea on how I can use prefuse to visualize what I want?

Thanks in advance.

make edge labeler transparent partially

Fri, 28 May 2010 16:01:16 +0200

Hello All,
I am testing the example ( EdgeLabelerDemo.as ) presented in

http://goosebumps4all.net/34all/bb/showt...hp?tid=182
by 34all. I wonder if the edge label can be made partially transparent?

Thanks

network representation

Tue, 11 May 2010 12:42:11 +0200

(hello there is no much of reference on the step by step tutorial and forum on sourceforge... a forum structured like this would be much more useful!!!
(also for searching threads...)!!)

so not finding much about the topic, I post a potential job offer.
- objective: represent a spring-force network
- database is quite large (several MB in xml format)
- the computing time for building the network can be reduced: we have already calculated the dependency matrix of each node using Wolfram Mathematica, we can export the file in several formats
- each link must contain retrive external information (should be already possible in flare)
+
- each node should be searchable, given some information attached to the node.

Please send some examples for displaying a network with flare, and demonstrate with sample DB that it is able to load several data
(you could embed fonts, to make it faster)

a plus but not required the possibility to port it on mobile phones

You can propose a price and we'll be glad to discuss it, or otherwise to include you in the project and share expertize at a free cost if you are interested in the type of project.

CirclePackLayout inside a RadialTreeLayout node : size problem

Fri, 30 Apr 2010 09:11:34 +0200

Hi,

I m trying to insert a CirclePackLayout vis inside a RadialTreeLayout node (at the root place only...). It works, but the RadialTreeLayout does not handle with the resulting root size. So, my question is : is it a way to manage this??

You can find the code and two screens in the attachments. The first screen shows only the labels to see how the vis is organized, and the second shows what happens when i insert the CirclePackLayout.

I think that i m not alone with this problem... Hope someone can help me/us!

Joël

How to display unrelated nodes in one graph?

Mon, 26 Apr 2010 18:12:11 +0200

Hi everyone,

I have this problem when trying to adopt the GraphView applet demo to one of my projects. Supposedly, I have 2 set of nodes, set A contains some related nodes, and set B contains some other related nodes. Set A and set B do not have any common nodes. Using the provided example, I can only render either set A or set B but not both of them at the same time. How can I display set A and set B in one view?

Thanks for your help.

layout help

Thu, 22 Apr 2010 22:05:46 +0200

hello i'm new to flare.
i did the tutorials but i can't to go to the next step by myself.
i'm trying to make a data structure similar to the layout in the demo
but i can't seem to get the data from twitter and put in that layout
please help.
thanks

history list

Thu, 22 Apr 2010 07:16:12 +0200

Hello,
I m very new to this flare and forum.I have seen the flare lab clickable root history list and have got the graph working but needed to know how to show the history i.e the root node selected. If already asked this question please point me to the post

Thank you