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I'm using Plotly's graphic_objects.Histogram. I am trying to draw several histograms on the same plot. I'm not satisfied with the results of the 'overlay' option. I would like to draw histograms with no fill colour like in this example, with only the borders of the boxes drawn.

I was trying to fiddle with "marker.pattern" options but this doesn't seem to work. What would be the way to accomplish this, if this is possible?

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    $\begingroup$ Have you tried using the marker argument with a colour of zero alpha and only a line color? $\endgroup$
    – Oxbowerce
    Commented Jan 20, 2022 at 12:54
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    $\begingroup$ Can you add in your code and screen shot the picture you are getting, so that others can reproduce your example? $\endgroup$
    – fractalnature
    Commented Jan 20, 2022 at 18:18
  • $\begingroup$ Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. $\endgroup$
    – Community Bot
    Commented Jan 20, 2022 at 18:18

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Expanding on @Oxbowerce's suggestion, this gives an OK look (however, ideally I'd like to only use the 'roof' of each bin and not the vertical lines, I suspect that's not possible though)

fig = px.histogram(...)
for i in range(len(fig.data)):
    fig.data[i].marker.line.width = 3
    fig.data[i].marker.line.color = fig.data[i].marker.color
    fig.data[i].marker.color = "rgba(255, 255, 255, 0)"
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