Gar*_*ary 8 python plot datetime bar-chart
我正在尝试绘制一个图表,其中x轴是时间,而y轴是条形图,条形图将覆盖特定时间段,如下所示:
______________
|_____________|
_____________________
|___________________|
----------------------------------------------------->
time
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我有2个日期时间值列表,这些值是我想要涵盖的这些时间的开始和结束时间.到目前为止我有
x = np.array([dt.datetime(2010, 1, 8, i,0) for i in range(24)])
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覆盖24小时.我的问题是如何设置和绘制我的y值看起来像这样?
你可以使用plt.barh
:
import datetime as DT
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
start = [DT.datetime(2000,1,1)+DT.timedelta(days=i) for i in (2,0,3)]
end = [s+DT.timedelta(days=i) for s,i in zip(start, [15,7,10])]
start = mdates.date2num(start)
end = mdates.date2num(end)
yval = [1,2,3]
width = end-start
fig, ax = plt.subplots()
ax.barh(bottom=yval, width=width, left=start, height=0.3)
xfmt = mdates.DateFormatter('%Y-%m-%d')
ax.xaxis.set_major_formatter(xfmt)
# autorotate the dates
fig.autofmt_xdate()
plt.show()
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