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Gibberish / malformed / strange negative y-axis values #4118

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valankar opened this issue Mar 21, 2023 · 6 comments
Closed

Gibberish / malformed / strange negative y-axis values #4118

valankar opened this issue Mar 21, 2023 · 6 comments

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@valankar
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#!/usr/bin/env python3
"""Test negative bug."""

from plotly.subplots import make_subplots

fig = make_subplots(rows=1, cols=1)
fig.add_bar(x=[1, 2, 3], y=[-4, 5, -6], row=1, col=1)
fig.update_layout(height=400, width=500, showlegend=True)

with open('web/negative.html', 'w', encoding='utf-8') as index_file:
    index_file.write(fig.to_html(full_html=False))

This results in:

neg

When I change to full_html=True, it works properly:

pos

This seems to be a recent bug because it worked fine before I upgraded Plotly. I’m using this version from conda-forge:

plotly 5.13.1 pyhd8ed1ab_0 conda-forge

More details on this issue:

https://community.plotly.com/t/gibberish-malformed-negative-y-axis-values-in-plotly-charts-in-python/71924/1
@AaronStiff
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@alexcjohnson is this related to the changes to write_html made in 5.13.0 (#4019) or this something different?

@nicolaskruchten
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I believe this will be fixed when we merge #4114

@nicolaskruchten
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Or rather, the same fix is required. Recent versions of Plotly.js contain UTF-8 characters and hence must specify the encoding when loading the library.

@valankar
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It seems like this is fixed now?

@taldcroft taldcroft mentioned this issue Aug 2, 2023
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@Miladiouss Miladiouss mentioned this issue Jul 11, 2024
Open
rl-utility-man added a commit to rl-utility-man/plotly.py that referenced this issue Mar 4, 2024
@rl-utility-man
added UTF-8 encoding to the Jinja2 template example
29372c3 
I followed this example and got nonsense characters instead of negative signs because I failed to specify UTF-8 encoding, as discussed in plotly#4118
@rl-utility-man rl-utility-man mentioned this issue Mar 4, 2024
Merged
@RomFR57
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RomFR57 commented Mar 25, 2024

It worked for me when i added this line to the html file :

<meta charset="utf-8">

Python code :

import plotly.offline as offline

template = """
<meta charset="utf-8">
<head>
<body style="background-color:#111111;">
</head>
<body>
{plot_div:s}
</body>""".format(plot_div=offline.plot(fig, config=config, output_type='div'))
with open('fig.html', 'w', encoding="utf-8") as fp:
    fp.write(template)

@Coding-with-Adam
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Thanks for the advice, @RomFR57 .
This seems to be fixed to me as well. I also tried the code provided by the original poster and it works.

Closing this issue for now. If we rediscover a bug, I can reopen.

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5 participants
@nicolaskruchten @valankar @Coding-with-Adam @AaronStiff @RomFR57