data missing when multiple parcoords traces

[jonmmease]

Originally reported in plotly/plotly.py#1372

When multiple parcoords traces are placed in the same figure, the data lines only show up for the first trace. Subsequent traces display their axes, but no data lines.

CodePen: https://codepen.io/jonmmease/pen/xmqqJP

Code:

var fig = {
  "data": [
    {
      "dimensions": [
        {
          "constraintrange": [
            1,
            2
          ],
          "label": "A",
          "range": [
            1,
            5
          ],
          "values": [
            1,
            4
          ]
        },
        {
          "label": "B",
          "range": [
            1.5,
            5
          ],
          "tickvals": [
            1.5,
            3,
            4.5
          ],
          "values": [
            3,
            1.5
          ]
        }
      ],
      "domain": {
        "x": [
          0,
          0.45
        ],
        "y": [
          0,
          1
        ]
      },
      "line": {
        "color": "blue"
      },
      "type": "parcoords"
    },
    {
      "dimensions": [
        {
          "constraintrange": [
            1,
            2
          ],
          "label": "C",
          "range": [
            1,
            5
          ],
          "values": [
            1,
            4
          ]
        },
        {
          "label": "D",
          "range": [
            1.5,
            5
          ],
          "tickvals": [
            1.5,
            3,
            4.5
          ],
          "values": [
            3,
            1.5
          ]
        }
      ],
      "domain": {
        "x": [
          0.55,
          1
        ],
        "y": [
          0,
          1
        ]
      },
      "line": {
        "color": "blue"
      },
      "type": "parcoords"
    }
  ],
  "layout": {
    "title": "Multi-Parcoords Diagram"
  }
}

Plotly.plot('plotly-div', fig);

This worked fine in 1.31.0, seems to have broken in 1.32.0, and remains broken in 1.33.0.

[archmoj]

Codepen

[archmoj]

Likely related to #2159.

[archmoj]

This is the result of this commit: e6fcbf5

[emmanuelle]

Also mentioned here in the forum https://community.plot.ly/t/subplots-with-parallel-coordinates-not-showing-second-subplot/35239/2

[heroldn]

And here https://stackoverflow.com/questions/60393815/plotly-parallel-coordinates-charts-dont-display-correctly-in-subplots

[tzhang-lilly]

Hi, I think the bug is not related to the constraints on the graph. I had the same issue with the stackoverflow post. With multiple subplots, only the first graph would show up...

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson