Running Tree Plots from examples - will not run

📊 Plotly Python
1

I am trying to run the tree plot demo here:

The section on creating the traces fails to run.

    lines = go.Scatter(x=Xe,
                   y=Ye,
                   mode='lines',
                   line=dict(color='rgb(210,210,210)', width=1),
                   hoverinfo='none'
                   )

dots = go.Scatter(x=Xn,
                  y=Yn,
                  mode='markers',
                  name='',
                  marker=dict(symbol='dot',
                                size=18, 
                                color='#6175c1',    #'#DB4551', 
                                line=dict(color='rgb(50,50,50)', width=1)
                                ),
                  text=labels,
                  hoverinfo='text',
                  opacity=0.8
                  )

    ValueError                                Traceback (most recent call last)
<ipython-input-28-95c0866b4045> in <module>
     21                   text=labels,
     22                   hoverinfo='text',
---> 23                   opacity=0.8
     24                   )
     25 

    ValueError: 
    Invalid value of type 'builtins.str' received for the 'symbol' property of scatter.marker
        Received value: 'dot'

This code was lifted straight from the example and run in a Jupyter notebook with everything installed, configured and present - ie ff, igraph .

The cells before it that setup the arrays is running fine and all the vars check out.

If someone in the forum or Plotly knows the answer, that would be great.

2

Hi @thoughtsociety,

Staring with Plotly 3.0 the `symbol='dot`` was removed. Hence comment that line or just delete it.