英文:
show date in ranges in python plot graph
问题
我已经使用以下代码在Python中绘制了一个数据的图表，这是数据：
{'2022-01-30': 50, '2022-01-31': 152, '2022-02-01': 41, '2022-02-02': 50, '2022-02-03': 50, '2022-02-04': 50, '2022-02-05': 50, '2022-02-06': 50, '2022-02-07': 50, '2022-02-08': 50, '2022-02-09': 50, ......., '2022-09-30': 50, }
我使用以下代码创建了该图表：
df = pd.Series(data, name='Quantity').rename_axis('Date').reset_index()df.plot(kind='scatter', x='Date', y='Quantity')plt.show()
但是，图表中的日期都被挤在一点上，而不是以我期望的方式显示日期范围，比如2022-01-30、2022-02-28等，或者2022-01-30、2022-03-31等。请问我如何实现这个目标？
英文:
I have plotted a graph of a data in python using the following code, this is the data
{'2022-01-30': 50, '2022-01-31': 152, '2022-02-01': 41, '2022-02-02': 50,'2022-02-03': 50, '2022-02-04': 50,'2022-02-05': 50, '2022-02-06': 50, '2022-02-07': 50, '2022-02-08': 50, '2022-02-09': 50, ......., '2022-09-30': 50, }df = pd.Series(data, name='Quantity').rename_axis('Date').reset_index()df.plot(kind='scatter', x='Date', y='Quantity')plt.show()
and it gave me the graph but the days which I expected to be in range are all squashed to the point that it was not visible
I expected the date to come out in ranges like 2022-01-30, 2022-02-28, etc or 2022-01-30, 2022-03-31 etc
Please how can i achieve that
答案1
得分: 1
import matplotlib.dates as mdatesax = df.plot(kind='scatter', x='Date', y='Quantity')
示例 1：ax.xaxis.set_major_locator(mdates.DayLocator(interval=3))
示例 2：ax.xaxis.set_major_locator(mdates.MonthLocator(bymonthday=-1))
您可以通过阅读matplotlib.dates文档来了解更多信息。
<details><summary>英文:</summary>You have multiple possibilities:
import matplotlib.dates as mdates
ax = df.plot(kind='scatter', x='Date', y='Quantity')
**Example 1**: `ax.xaxis.set_major_locator(mdates.DayLocator(interval=3))`[![enter image description here][1]][1]**Example 2**: `ax.xaxis.set_major_locator(mdates.MonthLocator(bymonthday=-1))`[![enter image description here][2]][2]You can know more by reading the [`matplotlib.dates`][3] documentation.[1]: https://i.stack.imgur.com/BSgvs.png[2]: https://i.stack.imgur.com/CXieY.png[3]: https://matplotlib.org/stable/api/dates_api.html</details>
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