Could not change line edge color 'later'

[parthi2929]

Hi
I am trying to create a map like below (famous Arad Bucharest problem for Search algorithms) in plotly.

I want to change few edges(lines) colors. for eg, to show the chosen path. I could not find how to access the edges after Scatter object created.

...
edge_trace = Scatter(
    x=[],
    y=[],   
    line=Line(width=0.5,color='#888'),
    hoverinfo='none',
    mode='lines+text',
    text= []
    )
...
for node, adjacencies in enumerate(G.adjacency()):
    node_trace['marker']['color'].append(len(adjacencies))
    node_info = 'Node: '+str(node)
    node_trace['text'].append(node_info)
    edge_trace['line]['color'].append(3)             #THIS DID NOT WORK
...

[empet]

@parthi2929 Please address questions on Plotly Forum. Here https://community.plot.ly/t/network-graph-set-each-edge-with-different-color/2805 I explained how to color some network edges.
The lists x, y in your edge_trace definition should contain the x, respectively the y coordinates of the edges end nodes.

x=[1.2, 3, None, 2.5, 3.7, None, ...],
y=[2.4, 3.12, None, ...]

This means that the first edge has as ends the nodes of coordinates (1.2, 2.4), respectively (3, 3.12). None prevents to connect nodes that do not define an edge.

[parthi2929]

Hi

Can we do after we create node_trace and edge_trace. Edge traces have been suitably connecting the node_traces and plot is successful. Only that, after I create, i want to selectively color a part of the edge.

Please find entire code here

Illustration of color requirement (red lines in below):

My current plotly output:

[cldougl]

Hi there,
Thanks for using Plotly!
Please post questions in our community forum: https://community.plot.ly