(perfect solution) how to set the position of Matplotlib legend freely

Preface

plt.legend()

We know , This code will help us display the legend , And usually , It will be placed in a good position in the picture . But if our data , It takes up the whole image , here , There will be a problem with its position .

So how can we freely set the legend position ？

loc

This parameter has some built-in positions , If these positions are exactly what you want , Then use this , Very convenient .

plt.legend(loc=1)# This is equivalent to placing the legend in the upper right corner .

bbox_to_anchor

This is a unique skill , Because it can control any position .

plt.legend(bbox_to_anchor=(1,0))

This thing is a coordinate , The origin is the lower left corner of the graph . however , The numerical value of this coordinate represents the scale . such as

(1,0)# The lower right corner 
(0,1)# top left corner 
(0.5,0.5)# middle 
(0.4,0.4)# A little lower left in the middle , ha-ha .

So , It's easy , Just slowly adjust yourself to the position you want . Be careful , It also supports negative numbers .

Final , Successfully adjusted to a middle , Left position haha .

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