在seaborn中绘制datetime.time [英] Plot datetime.time in seaborn

问题描述

我在与seaborn约会时遇到了麻烦.我正在尝试使用x作为数据类型 datetime.time 绘制分类数据，但出现以下错误:

Hi I am having trouble plotting a datetime with seaborn. I am trying to plot a categorical data with x as datatype datetime.time but I get these error:

float() argument must be a string or a number, not 'datetime.time'

这是我的 df:

       toronto_time             description
0      00:00:50                   STATS
1      00:01:55                   STATS
2      00:02:18                   ONLINE
3      00:05:24                   STATS
4      00:05:34                   STATS
5      00:06:33                   OFFLINE

这是我的代码:

import matplotlib.pyplot as plt
import seaborn as sns

plt.style.use('seaborn-colorblind')

plt.figure(figsize=(8,6))
sns.swarmplot('toronto_time', 'description', data=df);
plt.show()

更新:

'toronto_time' 的 dtype 是一个对象.当我使用 pd.to_datetime 时，它​​会转换为 datetime 但它会添加一个日期.

dtype of 'toronto_time' is an object. When I used pd.to_datetime it converts to datetime however it adds a date.

推荐答案

如果我理解正确，你可以这样做:

If I understood you correctly, you could do in this way:

import matplotlib.pyplot as plt
import seaborn as sns
df['toronto_time'] = pd.to_datetime(df['toronto_time']).dt.strftime('%H:%M:%S')
sns.scatterplot(df['toronto_time'], df['description'])
plt.show()

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