Matplotlib中x轴上的时间格式

Question

x轴上的时间必须以3秒的时间间隔表示，但我的数据中的时间增量为2秒。因此，我尝试按照代码中的说明进行操作，但我的时间已经到了09:56:09，但时间一直持续到09:56:22。

请注意，时间应从09:56:00开始

如何完全展示x轴上的时间？

代码：

{'Date': {0: '2015-04-30', 1: '2015-05-01', 2: '2015-05-02', 3: '2015-05-03', 4: '2015-05-04'}, 'T min °C': {0: 11.7, 1: 8.3, 2: 8.3, 3: 11.6, 4: 12.4}, 'T max °C': {0: 11.9, 1: 8.9, 2: 8.4, 3: 11.8, 4: 12.7}, 'N sum mm': {0: 0.0, 1: 0.0, 2: 0.6, 3: 1.9, 4: 0.0}, 'T min °C.1': {0: 11.6, 1: 8.0, 2: 8.3, 3: 11.4, 4: 12.4}, 'T max °C.1': {0: 11.8, 1: 8.2, 2: 8.3, 3: 11.6, 4: 12.4}, 'N sum mm.1': {0: 0.0, 1: 0.1, 2: 0.6, 3: 0.3, 4: 0.0}, 'T min °C.2': {0: 10.2, 1: 7.9, 2: 8.2, 3: 11.1, 4: 12.2}, 'T max °C.2': {0: 11.2, 1: 8.1, 2: 8.3, 3: 11.4, 4: 12.3}, 'N sum mm.2': {0: 0.0, 1: 0.0, 2: 1.5, 3: 0.2, 4: 0.0}, 'T min °C.3': {0: 9.2, 1: 7.5, 2: 8.1, 3: 11.0, 4: 12.1}, 'T max °C.3': {0: 9.8, 1: 7.8, 2: 8.2, 3: 11.1, 4: 12.2}, 'N sum mm.3': {0: 0.0, 1: 0.0, 2: 0.4, 3: 0.0, 4: 0.0}, 'T min °C.4': {0: 8.8, 1: 7.0, 2: 8.2, 3: 10.8, 4: 12.0}, 'T max °C.4': {0: 9.2, 1: 7.5, 2: 8.2, 3: 10.9, 4: 12.1}, 'N sum mm.4': {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.1, 4: 0.0}, 'T min °C.5': {0: 8.4, 1: 7.0, 2: 8.2, 3: 10.6, 4: 11.9}, 'T max °C.5': {0: 8.6, 1: 7.1, 2: 8.3, 3: 10.8, 4: 12.1}, 'N sum mm.5': {0: 0.1, 1: 0.0, 2: 0.0, 3: 0.2, 4: 0.0}, 'T min °C.6': {0: 8.6, 1: 6.9, 2: 8.1, 3: 10.5, 4: 11.8}, 'T max °C.6': {0: 8.7, 1: 7.0, 2: 8.3, 3: 10.6, 4: 11.9}, 'N sum mm.6': {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.1, 4: 0.0}, 'T min °C.7': {0: 8.5, 1: 6.8, 2: 8.4, 3: 10.4, 4: 11.8}, 'T max °C.7': {0: 8.7, 1: 7.0, 2: 8.9, 3: 10.5, 4: 12.0}, 'N sum mm.7': {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.2, 4: 0.2}, 'T min °C.8': {0: 8.4, 1: 7.0, 2: 9.1, 3: 10.6, 4: 12.0}, 'T max °C.8': {0: 8.4, 1: 7.2, 2: 10.8, 3: 10.8, 4: 12.8}, 'N sum mm.8': {0: 1.4, 1: 0.0, 2: 0.0, 3: 0.1, 4: 0.0}, 'T min °C.9': {0: 7.0, 1: 7.3, 2: 11.2, 3: 10.9, 4: 13.0}, 'T max °C.9': {0: 8.3, 1: 7.8, 2: 12.5, 3: 11.4, 4: 13.5}, 'N sum mm.9': {0: 2.9, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.10': {0: 6.7, 1: 8.0, 2: 12.3, 3: 11.5, 4: 13.6}, 'T max °C.10': {0: 6.9, 1: 8.2, 2: 13.9, 3: 12.3, 4: 14.8}, 'N sum mm.10': {0: 2.9, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.11': {0: 6.5, 1: 8.2, 2: 14.5, 3: 12.3, 4: 15.0}, 'T max °C.11': {0: 6.6, 1: 8.5, 2: 16.1, 3: 12.7, 4: 15.8}, 'N sum mm.11': {0: 3.7, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.12': {0: 6.7, 1: 8.3, 2: 16.3, 3: 12.8, 4: 15.9}, 'T max °C.12': {0: 7.3, 1: 8.4, 2: 17.6, 3: 13.4, 4: 16.3}, 'N sum mm.12': {0: 1.1, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.13': {0: 7.6, 1: 8.4, 2: 17.8, 3: 13.6, 4: 16.3}, 'T max °C.13': {0: 8.8, 1: 8.5, 2: 18.6, 3: 13.9, 4: 17.0}, 'N sum mm.13': {0: 0.0, 1: 0.1, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.14': {0: 9.5, 1: 8.6, 2: 19.2, 3: 14.1, 4: 17.0}, 'T max °C.14': {0: 11.4, 1: 9.1, 2: 19.8, 3: 14.3, 4: 17.3}, 'N sum mm.14': {0: 0.0, 1: 0.3, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.15': {0: 11.4, 1: 9.0, 2: 20.0, 3: 14.4, 4: 16.7}, 'T max °C.15': {0: 12.6, 1: 9.1, 2: 20.5, 3: 15.0, 4: 17.0}, 'N sum mm.15': {0: 0.0, 1: 0.4, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.16': {0: 12.6, 1: 9.1, 2: 20.0, 3: 14.8, 4: 16.8}, 'T max °C.16': {0: 13.4, 1: 9.3, 2: 20.4, 3: 14.9, 4: 17.1}, 'N sum mm.16': {0: 0.0, 1: 0.2, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.17': {0: 13.7, 1: 9.2, 2: 19.6, 3: 14.6, 4: 16.3}, 'T max °C.17': {0: 14.1, 1: 9.3, 2: 20.0, 3: 14.7, 4: 16.5}, 'N sum mm.17': {0: 0.0, 1: 0.1, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.18': {0: 12.9, 1: 8.9, 2: 17.7, 3: 14.2, 4: 16.0}, 'T max °C.18': {0: 13.9, 1: 9.1, 2: 19.4, 3: 14.6, 4: 16.4}, 'N sum mm.18': {0: 0.0, 1: 0.1, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.19': {0: 11.0, 1: 8.7, 2: 16.0, 3: 14.0, 4: 15.3}, 'T max °C.19': {0: 12.2, 1: 8.9, 2: 17.9, 3: 14.1, 4: 16.1}, 'N sum mm.19': {0: 0.0, 1: 0.2, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.20': {0: 9.9, 1: 8.6, 2: 14.6, 3: 13.2, 4: 14.5}, 'T max °C.20': {0: 10.9, 1: 8.7, 2: 16.0, 3: 14.0, 4: 15.4}, 'N sum mm.20': {0: 0.0, 1: 0.7, 2: 0.0, 3: 0.0, 4: 0.0}, 'T min °C.21': {0: 10.2, 1: 8.6, 2: 13.8, 3: 12.8, 4: 14.2}, 'T max °C.21': {0: 10.5, 1: 8.6, 2: 14.9, 3: 13.4, 4: 14.9}, 'N sum mm.21': {0: 0.0, 1: 1.5, 2: 0.2, 3: 0.0, 4: 0.0}, 'T min °C.22': {0: 9.1, 1: 8.5, 2: 12.1, 3: 12.8, 4: 13.8}, 'T max °C.22': {0: 10.2, 1: 8.5, 2: 13.2, 3: 12.9, 4: 14.3}, 'N sum mm.22': {0: 0.0, 1: 1.3, 2: 0.7, 3: 0.0, 4: 0.0}, 'T min °C.23': {0: 9.1, 1: 8.4, 2: 11.9, 3: 12.7, 4: 13.4}, 'T max °C.23': {0: 9.6, 1: 8.4, 2: 12.7, 3: 12.8, 4: 14.1}, 'N sum mm.23': {0: 0.0, 1: 1.3, 2: 2.1, 3: 0.0, 4: 0.0}}

图形

Answer 1

问题出在for loop中的len(the_date)。 在代码中添加此部分：

from datetime import datetime, timedelta, date
duration = datetime.combine(date.min, datetime.strptime(the_date_0[-1], "%d-%m-%Y %H:%M:%S.0000").time()) - datetime.combine(date.min, datetime.strptime(the_date_0[0], "%d-%m-%Y %H:%M:%S.0000").time())
seconds = int(duration.total_seconds())

并以这种方式修改循环：

for i1 in range(0,seconds,3):

输出：