下面是一个Python程序,它可以执行以下操作:

• 对treasury.gov进行API调用以检索数据
• 将数据存储在Pandas数据帧中
• 将数据绘制为条形图

import requests
import pandas as pd
import matplotlib.pyplot as plt

date = '1900-01-01'

transaction_type = 'Withdrawals'
transaction_catg = 'Interest on Treasury Securities'

page_size = 10000

url = 'https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/dts/deposits_withdrawals_operating_cash'

url_params = f'?filter=record_date:gt:{date},transaction_type:eq:{transaction_type},transaction_catg:eq:{transaction_catg}&page[size]={page_size}'

response = requests.get(url + url_params)

result_json = response.json()

df = pd.DataFrame(result_json['data'])

# Convert transaction_today_amt to numeric
df['transaction_today_amt'] = pd.to_numeric(df['transaction_today_amt']) 

df.plot.bar(x='record_date', y='transaction_today_amt')

plt.show()

以下是我得到的结果图表:

正如您所看到的,x轴标签太多了。

问题

设置图表以使x轴标签清晰易读的好方法是什么?