python - Plotly displaying numerical values as counts instead of its actual values? - Stack Overflow

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I am trying to plot my pandas df data onto a plotly bar chart, but for some reason, instead of putting the numerical values on the chart, its just putting the order onto it.

For example, I am trying to also follow along with the docs, but it also fails on the docs' example.

The code:

import plotly.express as px
fig = px.bar(x=["a", "b", "c"], y=[1, 3, 2])
fig.show()

shows a chart of this:

the bar values are the indexes of the array, rather than their actual values.

I presume it might be with an issue with my install, but I am not entirely sure. Any help would be appreciated, as I haven't been able to find other solutions elsewhere.

I am trying to plot my pandas df data onto a plotly bar chart, but for some reason, instead of putting the numerical values on the chart, its just putting the order onto it.

For example, I am trying to also follow along with the docs, but it also fails on the docs' example.

The code:

import plotly.express as px
fig = px.bar(x=["a", "b", "c"], y=[1, 3, 2])
fig.show()

shows a chart of this:

the bar values are the indexes of the array, rather than their actual values.

I presume it might be with an issue with my install, but I am not entirely sure. Any help would be appreciated, as I haven't been able to find other solutions elsewhere.

• python
• jupyter-notebook
• plotly
• bar-chart

Share Improve this question Follow edited Mar 11 at 19:42 Derek O 19.7k44 gold badges2929 silver badges4949 bronze badges asked Mar 11 at 17:12 Hugh MungusHugh Mungus 5511 silver badge44 bronze badges 5

• I cannot reproduce the error you're seeing. are you using the latest version of plotly? i am using plotly = v5.23.0 – Derek O Commented Mar 11 at 19:47
• @DerekO i am using 6.0.0. – Hugh Mungus Commented Mar 11 at 20:00
• is this what you get when you type %pip show plotly in your jupyter notebook? because I cannot reproduce the behavior you're seeing in a jupyter notebook or locally – Derek O Commented Mar 11 at 20:15
• @DerekO I think the problem was purely the version type. I changed it to your version and it worked, so maybe its just a bug in the newer version. – Hugh Mungus Commented Mar 11 at 20:16
• interesting... i am seeing the behavior too now so I believe this is a bug that only shows up when being run in a jupyter notebook – Derek O Commented Mar 11 at 20:18

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1 Answer 1

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I tested this out, and this appears to be a bug that only appears when using plotly v6.0.0 in a jupyter notebook. For now, the issue can be worked around by downgrading the version inside the notebook: %pip install plotly==5.23.0

You'll notice that if you try to plot fig = px.bar(x=["a", "b", "c"], y=["1", "3", "2"]) you get the same, undesired behavior so it's possible that when plotly is run from a jupyter notebook and px.bar is called using lists passed to x and y, the y values are being converted to strings under the hood.

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