[BUG]: TOZEROY FILL IS FILLING AREAS OF THE PLOT THAT HAS NO DATA IN IT #5632
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Thanks for the report! This certainly seems like a bug. Our team probably won't be able to get to this in the near future, but we can prioritize a PR review if you'd like to work on it.
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on Jun 24, 2026 Hi, I'd like to work on this
@tejiriderek87 that image looks great! If you are able to open a PR with this fix, we would be thrilled to review it!
Hi, I'd like to work on this
I would open a PR and contact you bro
@tejiriderek87 that image looks great! If you are able to open a PR with this fix, we would be thrilled to review it!
I'll do that in a jiffy
Hi! I'm a beginner in open source and would like to work on this issue. Could you please guide me on how to reproduce it? I'll try my best to fix it! 🙏
Reacted by Robert ClausI'd like to pick this up — the previous claimant has been inactive for ~2 months. I'll investigate whether this needs a fix in plotly.py or upstream in plotly.js and open a PR accordingly.
Feel free to investigate the issue, but please present your findings and plan for a solution before creating a PR.

So, I have currently implemented the tozeroy fill (the area under the curve) to a feature in one of the datasets I'm working with
When I set the fill the tozeroy, it fills under the areas of the plot that currently have no data in it, tozeroy currently joins a polygon from the bottom edge of a point that has data to the top of another edge that has data in it to cover that empty data trace section.
When I set the fill to 'none', plotly obeys the rule of not covering for the spots that has no data in it as shown in the picture below
The areas I circled is where the problem lies as shown in the picture below
Thank you