如何使用时间间隔设置xaxis，例如使用matplotlib设置15分钟

Question

How to set the xaxis in time interval 15minutes as: 如何以15分钟的时间间隔将xaxis设置为：

'08:00', '08:15', '08:30', '08:45', '09:00', '09:15', '09:30', '09:45', '10:00','10:15', '10:30', '10:45','11:00'

So each one is a label in xaxis. 因此，每个都是xaxis中的标签。

data is as follows: 数据如下：

data = [[0,1],[08:18,09:16],[10:18,10:52]]

x1 = data[:][1]

x2 = data[:][2]

y = data[:][0]

I want to use plot function to plot with data as above: 我想使用plot函数以上述方式绘制数据：

plt.plot(data[:][1], y,
         data[:][2], y)

After plotting, there should have two lines on the map. 绘制后，地图上应该有两条线。 And the labels are in time interval of 15min. 标签间隔为15分钟。

Answer 1

The given data is not valid in Python. 给定的data在Python中无效。 It should be like [["0","1"],["08:18","09:16"]] . 它应该像[["0","1"],["08:18","09:16"]] 。
Write a function to translate the time intervals into real number. 编写一个将时间间隔转换为实数的函数。 (For understandablity to you, the code is not that pythonic.) （为了便于您理解，代码不是那种pythonic。）
```
 def time_to_num(time_str): time_str = time_str.split(':') #check if time_str is valid here, then: num = 0 num = int(time_str[0]) if len(time_str) == 2: num += int(time_str[1])/60.0 return num 
```
Make it like x1 = [time_to_num(item[1]) for item in data] 使它像x1 = [time_to_num(item[1]) for item in data]

Set the X axis lable as time interval with something like: 将X轴标签设置为时间间隔，例如：

 #fig = matplotlib.plot... fig.set_xticks([0, 0.25, 0.5, 0.75, 1, 1.25]) fig.set_xticklabels(['0:00', '0:15', '0:30', '0:45', '1:00', '1:15'])