Useful Jython scripts for GUESS, The Graph Exploration System

Often the data that we import in GUESS is in such a form that to look at every node and edge distinctly we need to do lot of repositioning and have to set many features so that the graph look elegant in terms of its visualization.

Here is a quick fix to this problem. In the following script i am going to set the node color, edge color, size of nodes,label visibility, label color,  the layout of the graph, and most importantly if you are working with the weighted graph, i am going to make the width of the edges of the graph proportional to their corresponding weight. Also in case of signed graph the color of the positive edges and the negative edges will be distinct which will make it easy for you to recognize them at once.



def modify_graph():
    edgeset=g.getEdges()
    if edgeset.size()>0:
        edgeset1=g.getEdges()
        maxweight=-1000
        minweight=1000
        i=0
        rescaleLayout(1280,800)
        for i in edgeset:
            i.labelvisible=false
            i.labelcolor=black
            if i.weight>0:
                i.color=limegreen
            else:
                i.color=red
                edgeset1.remove(i)
        for i in range (edgeset1.size()):
            if edgeset1[i].weight<minweight:
                minweight=edgeset1[i].weight
            if edgeset1[i].weight>maxweight:
                maxweight=edgeset1[i].weight
        diff=maxweight-minweight
        x=1.0
        max=0
        x=.01
        while max<=10:
            max=maxweight*x
            x=x+.01
        i=0
        for i in range (edgeset1.size()):
            edgeset1[i].width=(edgeset1[i].weight*x)
    nodeset=g.getNodes()
    for n in nodeset:
        n.width = 20
        n.height = 20
        n.labelvisible=true
        n.labelcolor=black
        n.color=black
        n.style = 2
    g.kkLayout()
modify_graph()