Graph Plot with Custom Nodes

[flobe]

Hi all

I’m currently working with GraphPlot.jl to visualize my data - works fine. However I want to enrich the visualization so that you can see the confidence of the nodes/data in the graph during the simulation. I was thinking of a filling circle in each node. To test it, I have already implemented it using Compose.jl.

I would like to pass these custom nodes to my existing code with GraphPlot.jl, so that I can continue to use all the functionality of GraphPlot.jl and do not have to draw each edge myself.

Since GraphPlot is also using Compose, I guess it should be possible, but I have no idea how to start … has anyone an idea?

Thanks!

[cormullion]

if you’re wanting a “live” display that updates while your code runs, you probably need Makie. I would guess that other graph drawing packages would output only single PNG or SVG images …

[flobe]

Ah maybe I expressed myself misunderstandable. The problem is not the live animation but the custom nodes. If each frame is saved as a png/svg and I only have the visualisation afterwards, I am completely satisfied.

[cormullion]

Judging from this open issue I’m guessing that you can’t at the moment draw custom node shapes in GraphPlot.jl.

If you use Plots.jl’s GraphRecipes you can specify node shape - this may accept custom shapes.

If you use GraphMakie.jl you should be able to use custom marker shapes using eg graphplot(g, node_attr=(marker=... - see the docs for details.

If you use Karnak.jl (which I’m more familiar with) you can pass a function to the vertexshapes keyword:

drawgraph(g,
    vertexshapes = (v) -> begin
            sethue("grey30")
            circle(O, node_radius, :fill)
            sethue(HSL(360rand(), 0.8, 0.7))
            pie(O, node_radius, 0, rand() * 2π, :fill)
        end 
    )

[flobe]

Thanks, I was not aware of the open issue and also of the package Karnak.jl (which is yours, I guess?). Seems very comprehensive, with lots of features - I’ll definitely try to get my head around it and give it a go!