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我正在嘗試將時間序列的x軸被格式化爲%y-%m-%d的時間序列圖中添加一條紅色垂直線。我想添加該行的日期是2013-05-14。簡單地增加前行 「plt.show()」:在matplotlib中向日期格式化的時間序列添加垂直線
plt.axvline(x=2013-05-14)
或:
plt.axvline(x='2013-05-14')
返回錯誤:
RuntimeError: RRuleLocator estimated to generate 23972 ticks from 0044-05-12 23:59:59.999990+00:00 to 2013-06-07 00:00:00.000010+00:00: exceeds Locator.MAXTICKS * 2 (2000)
下面是函數,因爲它效果很好是:
def time_series(self):
fig = plt.figure(figsize=(20, 20), frameon = False)
ax1 = fig.add_subplot(3, 1, 1)
d_dates, d_flux_n2o, d_sem_n2o = np.loadtxt('%stime_series/dynamic.csv' %self.dir['r_directory'], delimiter = ',', unpack=True, converters={0: mdates.strpdate2num('%Y-%m-%d')})
ax1.set_xlabel('Date')
ax1.xaxis.set_major_formatter(mdates.DateFormatter('%Y-%m-%d'))
ax1.xaxis.set_major_locator(mdates.MonthLocator())
ax1.xaxis.set_minor_locator(mdates.DayLocator())
plt.gcf().autofmt_xdate()
ax1.errorbar(d_dates, d_flux_n2o, yerr=d_sem_n2o, fmt="y-", linewidth=1.5, label = 'Biodynamic')
ax1.legend(loc = 0)
plt.show()