better API support for parallel coordinates (parcoords) lines styles

[ndabAP]

At the moment, it's not possible to change the width of the parallel coordinates line or change the color of the axis lines/ticks.

https://codepen.io/plotly/pen/ZepaxM

[idea-launch-lab]

On related note, is it possible to apply a color function to selectively color lines, e.g., based on a categorical attribute. A feature that the parcoords API might support. Thanks.

[etpinard]

Merging the "axis" part of this request in #2292

[bhvbhushan]

Is there any update on this issue ?? or some alternative probably ??? Thanks

[bthorsted]

Not sure if this is relevant, but adding support for exporting parcoords to vector graphics would also be greatly appreciated.

[ped59430]

+1

[Buiboni]

+1 for line style manipulation.

[nicolaskruchten]

This is a good idea, and we would happily work with someone from the community to get these changes implemented :)

[KaleabTessera]

+1

[ag-ayush]

+1

[Di-o-go]

+1

[empet]

I answered a question on Julia discourse related to setting font color and font family for both ticks and labels in a parcoords chart.
With this code:

mytrace = parcoords(;tickfont_size=14, tickfont_color="white",  tickfont_family="Balto",
                     line = attr(color=df.score23),
        dimensions = [
            attr(range = [0,1],
                 label = "response1", values = df.response1),
            attr(range = [0,1],
                 label = "response2", values = df.response2),
            attr(range = [0,1],
                 label = "response3", values = df.response3),
            attr(range = [0,1],
                 label = "response4", values = df.response4)
        ]);

        layout = Layout(Dict{Symbol,Any}(
            :font_family=> "Balto",
            :font_size=>20, 
            :font_color=>"white",
            :paper_bgcolor => "rgb(105, 105, 105)",
            #:plot_bgcolor => "rgb(105, 105, 105)",
            ))

the ticklabels are displayed as if the font were set to be bold:

Is this the intended behaviour?
It's so difficult to style this trace type!!!! The font for ticks doesn't appear to be from the Balto family, like that for labels.