Get new marker colorbar into mpl conversions

[theengineear]

Here's a working example of how to maker a colorbar on a scatter plot.

import plotly.plotly as py
fig = {
    "data": [{
        "marker": {
            "color": [0, -1, -2, -3, -4, -7, -8, -9, -33, -34, -35, -36, -37],
            "colorbar": {"title": "hi!"}
        },
        "y": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
        "type": "scatter",
        "mode": "markers",
    }],
    "layout": {"title": "scatter + colorbar = <3", "showlegend": False}
}

py.iplot(fig, validate=False)

This was completed in streambed in https://github.com/plotly/streambed/pull/2430

[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