如何更改分类 x 轴的绘图顺序

我得到了一个数据框，如下所示：

df:

Time of Day Season  value
Day        Shoulder 30.581606
Day        Summer   25.865560
Day        Winter   42.644530
Evening    Shoulder 39.954759
Evening    Summer   32.053458
Evening    Winter   53.678297
Morning    Shoulder 32.171245
Morning    Summer   25.070815
Morning    Winter   42.876667
Night      Shoulder 22.082042
Night      Summer   17.510290
Night      Winter   33.262356

我使用seaborn使用以下代码绘制线图中的值：

g = sns.lineplot(x='Time of Day',y='value',data=df,hue='Season')

它生成以下图表：

该图的问题在于 x 轴的顺序不是所需的顺序。我想将 a 轴值的顺序更改为 ['Morning', 'Day','Evening','Night']。我尝试使用以下命令更改它：

g.set_xticklabels(['Morning','Day','Evening','Night'])

但该命令仅更改 x 轴的标签，而不更改数据点的顺序。有人可以帮我解决这个问题吗？

• Use pandas.Categorical https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Categorical.html设置分类顺序'Time of Day' in the df.
• 测试于python 3.11, pandas 1.5.3, matplotlib 3.7.1, seaborn 0.12.2

import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns

data = {'Time of Day': ['Day', 'Day', 'Day', 'Evening', 'Evening', 'Evening', 'Morning', 'Morning', 'Morning', 'Night', 'Night', 'Night'],
        'Season': ['Shoulder', 'Summer', 'Winter', 'Shoulder', 'Summer', 'Winter', 'Shoulder', 'Summer', 'Winter', 'Shoulder', 'Summer', 'Winter'],
        'value': [30.581606, 25.865560000000002, 42.644529999999996, 39.954759, 32.053458, 53.678297, 32.171245, 25.070815, 42.876667, 22.082042, 17.510289999999998, 33.262356]}

# create dataframe
df = pd.DataFrame(data)

# set categorical order
df['Time of Day'] = pd.Categorical(df['Time of Day'],
                                   categories=['Morning', 'Day', 'Evening', 'Night'],
                                   ordered=True)

# plot
ax = sns.lineplot(x='Time of Day', y='value', data=df, hue='Season')
sns.move_legend(ax, bbox_to_anchor=(1, 0.5), loc='center left', frameon=False)

• If you are plotting data against a categorical x-axis, then consider using a categorical plot https://seaborn.pydata.org/tutorial/categorical.html like sns.pointplot https://seaborn.pydata.org/generated/seaborn.pointplot.html, where the x-axis can be ordered with the order parameter.
  • The 图形级 https://seaborn.pydata.org/tutorial/function_overview.html#figure-level-vs-axes-level-functions plot, sns.catplot https://seaborn.pydata.org/generated/seaborn.catplot.html with kind='point'也有效。

order=['Morning', 'Day', 'Evening', 'Night']

ax = sns.pointplot(x='Time of Day', y='value', data=df, hue='Season', order=order, marker='')
sns.move_legend(ax, bbox_to_anchor=(1, 0.5), loc='center left', frameon=False)