Parallel coordinates plot constraint range snapping behavior

đź“Š Plotly Python
1

I am having an odd behavior with parallel coordinates plots that I haven’t had before. When I drag to constrain the data, the constraint range snaps to some illogical set of values. It does this even if I explicitly set the constraintrange argument for the dimension! It’s making it very difficult to explore the data. Any tips on correcting this would be greatly appreciated.

Screen Recording 2020-05-06 at 4.22.40 PM
Screen Recording 2020-05-06 at 4.22.40 PM640Ă—532 1.98 MB

This is my code to build the plot.

fig = go.Figure()
fig.add_trace(
    go.Parcoords(
        line=dict(
            color=synergy_plot['review_encoded'],
            colorscale = [(0,DEFAULT_PLOTLY_COLORS[0]),
                          (0.5,DEFAULT_PLOTLY_COLORS[2]),
                          (1,DEFAULT_PLOTLY_COLORS[1])]
        ),
        dimensions=list([
          dict(range=[0,len(synergy_plot['review_encoded'].unique()) - 1],
            label='MD Review',
            values=synergy_plot['review_encoded'],
            tickvals=[0,1],
            ticktext=synergy_plot['review'].unique()),
          dict(range=[0,1],
            label='RNA coverage',
            tickvals=[0,0.2,0.4,0.6,0.8,1],
            values=synergy_plot['rna_coverage']),
          dict(range=[0,1],
            label='DNA coverage',
            tickvals=[0,0.2,0.4,0.6,0.8,1],
            values=synergy_plot['dna_coverage']),
          dict(range=[0,1],
            label='Core coverage',
            tickvals=[0,0.2,0.4,0.6,0.8,1],
            values=synergy_plot['core_coverage'])
        ])
    )
)
fig.update_layout(font=dict(size=24), margin=dict(l=200, r=200),
                  height=600)
fig.show()
2

It appears that the tickvals argument is causing this. Once I remove that, the snapping behavior stops.

3

I’m getting the same strange behavior. Is it concluded that this is related to the “tickvals”?