fig, ax = plt.subplots() ax.plot(RV_5.index, RV_5['RV_5min'], color='black', label='Actual') ax.fill_between(RV_5.index, RV_5['RV_5min'] - forecast_error, RV_5['RV_5min'] + forecast_error, alpha=0.2, color='blue', label='无ps置信区间') ax.fill_between(RV_5.index, conf_int_lower, conf_int_upper, alpha=0.2, color='green', label='有ps置信区间') ax.set_title('Prediction Intervals') ax.set_xlabel('Time') ax.set_ylabel('RV_5min') plt.legend() plt.show() fig, ax = plt.subplots() ax.plot(RV_5.index, RV_5['RV_5min'], color='black', label='Actual') ax.fill_between(RV_5.index, RV_5['RV_5min'] - forecast_error, RV_5['RV_5min'] + forecast_error, alpha=0.2, color='blue', label='无ps置信区间') ax.fill_between(RV_5.index, conf_int_lower, conf_int_upper, alpha=0.2, color='green', label='有ps置信区间') fig, ax = plt.subplots() ax.plot(RV_5.index, RV_5['RV_5min'], color='black', label='Actual') ax.fill_between(RV_5.index, RV_5['RV_5min'] - forecast_error, RV_5['RV_5min'] + forecast_error, alpha=0.2, color='blue', label='无ps置信区间') ax.fill_between(RV_5.index, conf_int_lower, conf_int_upper, alpha=0.2, color='green', label='有ps置信区间') fig, ax = plt.subplots() ax.plot(RV_5.index, RV_5['RV_5min'], color='black', label='Actual') ax.fill_between(RV_5.index, RV_5['RV_5min'] - forecast_error, RV_5['RV_5min'] + forecast_error, alpha=0.2, color='blue', label='无ps置信区间') ax.fill_between(RV_5.index, conf_int_lower, conf_int_upper, alpha=0.2, color='green', label='有ps置信区间') fig, ax = plt.subplots() ax.plot(RV_5.index, RV_5['RV_5min'], color='black', label='Actual') ax.fill_between(RV_5.index, RV_5['RV_5min'] - forecast_error, RV_5['RV_5min'] + forecast_error, alpha=0.2, color='blue', label='无ps置信区间') ax.fill_between(RV_5.index, conf_int_lower, conf_int_upper, alpha=0.2, color='green', label='有ps置信区间') 怎么将两个ax.fill_between画在一幅图上，不相互遮挡，

你可以使用相同的 `ax` 对象来绘制多个 `fill_between` 图形，以确保它们在同一幅图上不会相互遮挡。下面是一个示例代码：

fig, ax = plt.subplots()
ax.plot(RV_5.index, RV_5['RV_5min'], color='black', label='Actual')
ax.fill_between(RV_5.index, RV_5['RV_5min'] - forecast_error, RV_5['RV_5min'] + forecast_error, alpha=0.2, color='blue', label='无ps置信区间')
ax.fill_between(RV_5.index, conf_int_lower, conf_int_upper, alpha=0.2, color='green', label='有ps置信区间')

ax.set_title('Prediction Intervals')
ax.set_xlabel('Time')
ax.set_ylabel('RV_5min')

plt.legend()
plt.show()

这段代码将在同一幅图中绘制 `Actual` 曲线，并在其上方分别绘制了 `无ps置信区间` 和 `有ps置信区间` 的填充区域，它们不会相互遮挡。注意确保只创建一个 `fig` 和 `ax` 对象，并在同一个 `ax` 对象上调用多个 `fill_between` 方法。