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multibyte characters in widgets are not working #3868

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archiba opened this issue Aug 2, 2019 · 4 comments · Fixed by #3836
Closed

multibyte characters in widgets are not working #3868

archiba opened this issue Aug 2, 2019 · 4 comments · Fixed by #3836
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type: bug Something isn't correct or isn't working
Milestone
v1.13.0

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@archiba
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archiba commented Aug 2, 2019

desired result:
スクリーンショット 2019-08-02 13 36 57
(Label in chart title is equal to one in selection box, and it is corresponding)

actual result:
スクリーンショット 2019-08-02 13 37 38

Now I'm facing two different problems:

  1. Nothing happened when I select item in selection box
  2. displayed character in selection box is garbled

To solve problem 1, I think you need to put ensure_ascii=False for json.dumps at L463 in holoviews/plotting/widgets/__init__.py

To solve second one, static_template at L64 in holoviews/plotting/renderer.py should be

static_template = """
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    {css}
    {js}
  </head>
  <body>
    {html}
  </body>
</html>
"""

My code is here:

import pandas
import holoviews
import bokeh
import hvplot.pandas

print('pandas', pandas.__version__)
print('holoviews', holoviews.__version__)
print('bokeh', bokeh.__version__)

holoviews.extension('bokeh')

df = pandas.DataFrame({
    'a': ['あ', 'あ', 'あ', 'あ', 'あ', 'い', 'い', 'い', 'い', 'う', 'う', 'う'],
    'b': [10, 11, 12, 11, 10, 20, 21, 22, 21, 31, 32, 31],
    'c': [0, 1, 2, 1, 0, 0, -1, -2, -1, 1, 2, 3]
})
line_plot_groupby = df.hvplot.line(x='c', y='b', groupby='a', dynamic=False)
renderer = holoviews.renderer('bokeh')
renderer.save(line_plot_groupby, 'line_plot_groupby')

pandas 0.25.0
holoviews 1.2.9.post67+g7dd50144
bokeh 1.3.1
@philippjfr philippjfr added the type: bug Something isn't correct or isn't working label Aug 2, 2019
@philippjfr
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Thanks for the detailed bug report. Would you be willing to submit a PR for the fixes?

@philippjfr
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Actually nevermind, the widgets are about to be replaced entirely.

@philippjfr philippjfr mentioned this issue Aug 5, 2019
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@archiba
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archiba commented Aug 8, 2019

Thanks for your reply.
I gave up submit PR for the fixes because it was really difficult to understand how my code should be tested.

Additionally, I think problem can be solved by two different approaches:

  1. fix python code to dump json
  2. fix javascript code to load json

I don't know which approach is better for holoviews. So I just put issue.

@philippjfr philippjfr added this to the v1.13.0 milestone Sep 22, 2019
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type: bug Something isn't correct or isn't working
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Replace HoloViews widgets with Panel holoviz/holoviews
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@philippjfr @archiba