"dash length list in px" option not specified in schema

See https://github.com/plotly/plotly.py/issues/1107.

Plotly.py version 3 is not allowing a scatter.line.dash property to be set to a list of lengths in pixels (e.g. '5px,10px,2px,2px'). The issue is that the schema lists the property as an enumeration, and doesn’t indicate this pixel list form:

                    "dash": {
                        "valType": "string",
                        "values": [
                            "solid",
                            "dot",
                            "dash",
                            "longdash",
                            "dashdot",
                            "longdashdot"
                        ],
                        "dflt": "solid",
                        "role": "style",
                        "editType": "style",
                        "description": "Sets the dash style of lines. Set to a dash type string (*solid*, *dot*, *dash*, *longdash*, *dashdot*, or *longdashdot*) or a dash length list in px (eg *5px,10px,2px,2px*)."
                    },

How would you recommend proceeding in plotly.py? Should dashes be a special case (which is fine on my end), or is there something that we should do in the schema?

Thanks!

[jonmmease]

Thanks @alexcjohnson and @etpinard,

I’ll make it a special case and use @alexcjohnson 's regular expression as a starting point for our own validation. Even if we do add the regular expression to the schema, a special case is probably more user-friendly than telling a user that their string must match this regular expression 🙂

Here’s the full list of traces that have a line.dash property.

Based on the descriptions, it looks like all of them except scatterpolargl, scattergl, and scatter3d support the custom length dashes. Does that sound right?

[etpinard]

all of them except scatterpolargl, scattergl, and scatter3d support the custom length dashes. Does that sound right?

That’s correct 👍