使用 for 循环 matplotlib 绘制图例

我正在尝试使用 for 循环绘制多条线,但我想为每条线创建一个单独的图例。每条线代表一个位置,如“拉布拉多海”等,但是当我尝试绘制每条线的图例时,只有第一个“拉布拉多海”可见如何为每条线制作 matplotlib 图作为图例,其中有可定制标签?


这是我到目前为止的代码:


fig,ax=plt.subplots()


lines = []


for i in [26,27,28,39,30,32,84,86,87,88,96,98,99]:

    lines = ax.plot(years, mov_ave(fwf_tot.where(ds.ocean_basins == i).resample(TIME='1AS').sum().sum(dim=('X','Y')),5,'edges'))


#plt.title('Total FWF anomalies per ocean basin (moving average)')

ax.legend(lines[:13], ['Labrador sea','Hudson strait','Davis strait','Baffin bay', 'Lincoln sea', 'Irish sea and St. George', 'Arctic ocean', 'Barentsz sea', 'Greenland sea',

      'North sea', 'Kategat', 'Skagerrak', 'Norwegian sea'],loc='upper left');

plt.grid()

plt.show()

https://img1.sycdn.imooc.com/65b4a9ee0001c34804030258.jpg

慕桂英546537
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1回答

长风秋雁

你lines在每个情节之后重新定义。也许你想要:lines = []for i in [26,27,28,39,30,32,84,86,87,88,96,98,99]:    line = ax.plot(years, mov_ave(fwf_tot.where(ds.ocean_basins == i).resample(TIME='1AS').sum().sum(dim=('X','Y')),5,'edges'))    # add the line to line list    lines.append(line)ax.legend(lines, ....)但是,我认为将标签传递给更干净ax.plot:labels = ['Labrador sea','Hudson strait','Davis strait','Baffin bay', 'Lincoln sea', 'Irish sea and St. George', 'Arctic ocean', 'Barentsz sea', 'Greenland sea',      'North sea', 'Kategat', 'Skagerrak', 'Norwegian sea']values = [26,27,28,39,30,32,84,86,87,88,96,98,99]for i,l in zip(values, labels):    lines = ax.plot(years, mov_ave(fwf_tot.where(ds.ocean_basins == i)                                          .resample(TIME='1AS').sum()                                          .sum(dim=('X','Y')),                                   5,'edges'),                    label=l)plt.title('Total FWF anomalies per ocean basin (moving average)')ax.legend()plt.grid()plt.show()
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