在matplotlib的图例中插入先前计算的值 [英] Inserting a previously calculated value in a legend in matplotlib

问题描述

这应该很简单，但是我还没有找到它:我有一个先前计算出的值(系数R的平方)，我想将其插入到matplotlib的图例中.如果计算出的值为r_squared，则该值不起作用:

This should be simple, but I haven't found it: I have a value (the coefficient R squared) previously calculated and I want to insert it in a legend in matplotlib. If the value calculated is r_squared, this is not working:

plt.plot(x, y, linestyle='solid', color='k', label=r'Fitting line with $R^{2} = $, r_squared')

只是不读取值.

谢谢.

推荐答案

您可以只使用字符串格式:

You could just use string formatting :

plt.plot(x, y, linestyle='solid', color='k', label="Fitting line with $R^{{2}} = {}".format(r_squared))

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