如何在散景中设置日期时间轴的语言？

Question

I have trouble with setting language in which datetime axis is formatted in bokeh .我无法设置日期时间轴在bokeh中格式化的语言。 According to documentation , DatetimeTickFormatter produces time ticks 'according to the current locale' .根据文档， DatetimeTickFormatter会“根据当前语言环境”生成时间刻度。 However, whatever locale I set in Python, I get a plot formatted in English:但是，无论我在 Python 中设置什么语言环境，我都会得到一个英文格式的绘图：

# jupyter notebook
import locale
locale.setlocale(locale.LC_ALL, 'pl')

import random
from datetime import datetime, date
from bokeh.plotting import figure, show
from bokeh.io import output_notebook
from bokeh.models.formatters import DatetimeTickFormatter

output_notebook()

x_values = [datetime(2018, i, 1) for i in range(6, 13)]
y_values = [random.normalvariate(0, 1) for i in range(6, 13)]

p = figure(plot_width=600, plot_height=300, 
           x_axis_type='datetime', title="test", 
           x_axis_label='x test', y_axis_label='y test')

p.line(
    x=x_values, 
    y=y_values
)

p.xaxis.formatter = DatetimeTickFormatter(months = '%B')

show(p)

If that's relevant, global system locale is set to en-US :如果这是相关的，则全局系统区域设置为en-US ：

PS C:\Users\ppatrzyk> GET-WinSystemLocale

LCID             Name             DisplayName
----             ----             -----------
1033             en-US            English (United States)

I am working with plots in multiple languages so I need to change locale on the fly .我正在处理多种语言的绘图，所以我需要即时更改locale 。 Doing that through locale.setlocale has worked fine for me with both printing dates to console and with matplotlib .通过locale.setlocale这样做对我来说效果很好，无论是打印日期到控制台还是使用matplotlib 。 How can I set it in bokeh such that dates are formatted correctly?如何在bokeh中设置它以便日期格式正确？

EDIT :编辑：

The best workaround I got is to plot dates as numeric axis (unix timestamp) and then use major_label_overrides to replace ticks with correctly formatted dates obtained from python's datetime.strftime() .我得到的最佳解决方法是将日期绘制为数字轴（unix 时间戳），然后使用major_label_overrides将刻度替换为从 python 的datetime.strftime()获得的正确格式的日期。 However, in this case zooming to ticks in between data points is broken, so this is far from being a satisfactory solution :但是，在这种情况下，放大到数据点之间的刻度会被破坏，因此这远不是一个令人满意的解决方案：

x_values = [datetime(2018, i, 1) for i in range(6, 13)]
y_values = [random.normalvariate(0, 1) for i in range(6, 13)]

x_values_timestamp = [int(el.timestamp()) for el in x_values]
x_values_labels = [el.strftime('%B') for el in x_values]

p = figure(plot_width=600, plot_height=300, title="test", 
           x_axis_label='x test', y_axis_label='y test')

p.xaxis.ticker = x_values_timestamp
p.xaxis.major_label_overrides = dict(zip(x_values_timestamp, x_values_labels))

p.line(
    x=x_values_timestamp, 
    y=y_values
)

show(p)

Answer 1

I faced the same problem as I wanted the dates be displayed in portuguese of Portugal (pt-PT).我遇到了同样的问题，因为我希望日期以葡萄牙语（pt-PT）显示。

I found out that bokeh uses the file https://cdn.bokeh.org/bokeh/release/bokeh-2.4.2.min.js to set the datetime language.我发现散景使用文件https://cdn.bokeh.org/bokeh/release/bokeh-2.4.2.min.js来设置日期时间语言。

In my case, I wanted to generate standalone .html files, so I opted to set mode = 'inline' when exporting the file ( output_file('test.html', mode = 'inline') ) to embed the .js into the .html .就我而言，我想生成独立的.html文件，所以我选择在导出文件时设置mode = 'inline' （ output_file('test.html', mode = 'inline') ）以将.js嵌入到.html 。 But I assume that it should be possible to make the .html file load a custom bokeh-2.4.2.min.js by changing its path in the .html <head></head> .但我认为应该可以通过更改.html <head></head>中的路径来使.html文件加载自定义的bokeh-2.4.2.min.js 。

To solve my problem, I edited the exported .html (edit the custom .js if you don't choose mode = 'inline' ) and replaced the following strings:为了解决我的问题，我编辑了导出的.html （如果您不选择mode = 'inline' ，请编辑自定义.js ）并替换以下字符串：

find = 'locale:"en_US"'
replace = 'locale:"pt_PT"'

find = 'en_US:{date:"%m/%d/%Y",time24:"%I:%M:%S %p",time12:"%I:%M:%S %p",dateTime:"%a %d %b %Y %I:%M:%S %p %Z",meridiem:["AM","PM"],month:{abbrev:"Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec".split("|"),full:"January|February|March|April|May|June|July|August|September|October|November|December".split("|")},day:{abbrev:"Sun|Mon|Tue|Wed|Thu|Fri|Sat".split("|"),full:"Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday".split("|")}}'
replace = 'pt_PT:{date:"%d/%m/%Y",time24:"%H:%M:%S",time12:"%I:%M:%S %p",dateTime:"%a %d %b %Y %H:%M:%S %Z",meridiem:["AM","PM"],month:{abbrev:"Jan|Fev|Mar|Abr|Mai|Jun|Jul|Ago|Set|Out|Nov|Dez".split("|"),full:"Janeiro|Fevereiro|Março|Abril|Maio|Junho|Julho|Agosto|Setembro|Outubro|Novembro|Dezembro".split("|")},day:{abbrev:"Dom|Seg|Ter|Qua|Qui|Sex|Sáb".split("|"),full:"Domingo|Segunda-feira|Terça-feira|Quarta-feira|Quinta-feira|Sexta-feira|Sábado".split("|")}}'

find = 'u="Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|year|month|day|hour|minute|second|millisecond"'
replace = 'u="Domingo|Segunda-feira|Terça-feira|Quarta-feira|Quinta-feira|Sexta-feira|Sábado|ano|mês|dia|hora|minuto|segundo|milissegundo"'

I hope this helps anyone facing this "issue".我希望这可以帮助任何面临这个“问题”的人。

如何在散景中设置日期时间轴的语言？

问题描述

1 个解决方案

解决方案1
0 2022-05-10 11:05:13

如何在散景中设置日期时间轴的语言？

问题描述

1 个解决方案

解决方案1 0 2022-05-10 11:05:13

解决方案1
0 2022-05-10 11:05:13