missing data should be skipped in parcoords

[archmoj]

Reported in https://community.plot.ly/t/plotly-graph-objects-parcoords-nan-replaced-by-0/29725 If some of the columns contain nan during the display of plotly.graph_objects.Parcoords the data are displayed as 0, it will be nice to don’t to treat the value as a nan and not as 0.

demo

[etpinard]

I'm not sure about this. I think we should still draw the dimension axis and simply not draw the line.

[alexcjohnson]

Agreed - the ideal behavior would be to just remove the line segments to and from the nan value, but continue to show other segments of the same object.

[archmoj]

What would happen with selection then?

[alexcjohnson]

I'd say if the dimension with nan has any constraint on it at all, this object should be filtered out, but if it's unconstrained then this object should remain selected.