python - 更改 matplotlib 中多个子图的 y 轴

Question

我对 python 和 matplotlib 相当陌生。我遇到以下问题:

我想绘制 2000 年来的六个气候驱动因素。由于每个图代表不同的驱动程序，因此我想为每个 y 轴指定不同的标签，但无法为每个子图建立索引。请参阅以下代码和随后的错误消息:

###Plot MET drivers
fig3 = plt.figure(figsize=(20, 14))

for ii, name_MET in enumerate (["Day_since_start_of_sim", "Min._Temp", "Max._Temp", "Radiation","CO2_(ppm)","DOY"]):
        ax3 = fig3.add_subplot(2,3,ii+1)
        ax3.plot(drivers,'g-',label='2001')
        ax3.set_title(name_MET)
        ax3.set_xlabel('years')
        ax3[1].set_ylabel('Day_since_start_of_simulation')
        ax3[2].set_ylabel('Degrees C')
        ax3[3].set_ylabel('Degrees C')
        ax3[4].set_ylabel('MJ m-2 d-1')
        ax3[5].set_ylabel('ppm')
        ax3[6].set_ylabel('Days')
        ax3.set_xticks(incr_plot_years)
        ax3.set_xticklabels((incr_plot_years/365).astype('S'), rotation = 45)
        ax3.set_xlim(0,ax3.get_xlim()[1])
        ax3.set_ylim(0,ax3.get_ylim()[1])

错误消息:

    287     ax3.set_title(name_MET)
    288     ax3.set_xlabel('years')
--> 289     ax3[1].set_ylabel('Day_since_start_of_simulation')
    290     ax3[2].set_ylabel('Degrees C')
    291     ax3[3].set_ylabel('Degrees C')

TypeError: 'AxesSubplot' object does not support indexing

任何人都可以帮助我如何单独命名每个 y 轴吗？这对我有很大帮助!

谢谢，

Answer 1

您似乎枚举了想要在轴上使用的名称列表，因此您可以在每次迭代中使用当前名称，如下所示:

fig3 = plt.figure(figsize=(20, 14))

names =["Day_since_start_of_sim", "Min._Temp", "Max._Temp", 
        "Radiation","CO2_(ppm)","DAY"]

for ii, name_MET in enumerate (names):
    ax3 = fig3.add_subplot(2,3,ii+1)
    ax3.plot(drivers[ii],'g-',label='2001')# - unclear what drivers is?
    ax3.set_title(name_MET)
    ax3.set_xlabel('years')
    ax3.set_ylabel(name_MET)
    ax3.set_xticks(incr_plot_years) # - unclear
    ax3.set_xticklabels((incr_plot_years/365).astype('S'), rotation = 45)
    ax3.set_xlim(0,ax3.get_xlim()[1])
    ax3.set_ylim(0,ax3.get_ylim()[1])