dynamically computing ui attributes based on other attributes

["Mularz, Diane E." <mularz AT mitre.org>]

I am reviewing the material on graphStream’s ui and have a question about dynamically setting ui attributes.

 

For instance, I want to set the size of a node based on its edge count.  That value isn’t known until the graph is constructed.  In the viewer-basics documentation I see an example where an edge’s color is set based on the value stored in its maximum speed attribute.  But the stylesheet has been setup apriori to a range of color values.  When using the edge count for a node, this range wouldn’t be know apriori.  

 

In the case where I want to assign a color attribute to an edge based on the value of another edge attribute at creation time I can see that I can create a style class for each edge attribute and then add the ui attribute after I create the referenced attribute:  

 

In stylesheet:

edge.x {size:2px; stroke-color:red, stroke-width:1px;stroke-mode:plain);

 

In code:

edge.addAttribute(“x”, valueOfX);

edge.addAttribute("ui.class", "x");

 

But what if I want to set the width of the edge based on its attribute “weight” and that value isn’t known until the edge is created?

 

Also, where can I find a complete description of stylesheet options?

 

Regards,

 

Diane Mularz

Systems Software Engineer

Performance Speciality

The MITRE Corporation

Modeling & Simulation Technical Center

7515 Colshire Dr.

McLean, VA 22102

mularz AT mitre.org

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703.983.5598(work)

703.983.6435(fax)

 

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