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Plotly Express cannot process wide-form data with columns of different type #3394
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Hey! Any updates on this?
Hi - we are trying to tidy up the stale issues and PRs in Plotly's public repositories so that we can focus on things that are still important to our community. Since this one has been sitting for several years, I'm going to close it; if it is still a concern, please add a comment letting us know what recent version of our software you've checked it with so that I can reopen it and add it to our backlog. Thanks for your help - @gvwilson
Hi, its still very relevant as of latest plotly's version == 5.22.0.
- changed the title
[-]Px.scatter ValueError: Plotly Express cannot process wide-form data with columns of different type[/-][+]Plotly Express cannot process wide-form data with columns of different type[/+]on Aug 12, 2024 @jorge243 @subsurfaceiodev I'm curious whether this issue is still present as of plotly.py v7.0.0. There have been some significant changes since v5.22, most notably the refactor to make Plotly Express dataframe-agnostic via Narwhals (#4790). If either of you is able to provide a standalone code snippet of what you're trying to do, we're happy to look into it.
Thanks for the quick follow-up @subsurfaceiodev, appreciated!
Reacted by subsurfaceiodev- marked ValueError: Plotly Express cannot process wide-form data with columns of different type. #4219 as a duplicate of this issue
on Sep 1, 2026
Hi there! I’ve been trying to use px.scatter with a wide-format dataframe but, as “expected”, when i include columns in the dataframe that are not numeric i get the ValueError: Plotly Express cannot process wide-form data with columns of different type.
I can see the reason for this behavior when using something like a box plot. But i don’t get why this could be a problem for something like px.scatter when using something like x=df.columns, y=df.index, facet_col=‘variable’ where EACH wide dataframe column would be independent making its dtype irrelevant in comparison with the other columns. Could this condition be “skipped” in future versions when using a px.scatter like this?