Customizing Date Formatting for X-Axis Tick Labels

When working with time series data, it is common to encounter graphs with dates displayed on the x-axis.但是，默认格式有时可能是冗长的或不清楚的。在这种情况下，自定义日期格式可以增强可读性并对数据提供更清晰的理解。

最近在使用x轴显示的条形图时，一个用户最近遇到了此问题，该格式显示了“ 2012年12月15日”。 The goal was to simplify the formatting by removing the redundant month and year labels and displaying only the day numbers.

To resolve this issue, the following steps can be taken:

Import the matplotlib.dates module.
1. Create a DateFormatter object using the desired date format (e.g., myFmt = mdates.DateFormatter('%d')).
2. Set the major tick formatter for the x-axis using the DateFormatter object: ax.xaxis.set_major_formatter(myFmt).

By following these steps, the user can customize the date formatting of their x-axis tick labels, resulting in a graph with a more concise and与时间相关的数据的可读表示形式。