plt.rcParams['axes.unicode_minus']= False

This line of code is used to remove the minus sign from the axis labels and tick marks in a matplotlib plot. By default, matplotlib uses a Unicode minus sign (U+2212) instead of a regular minus sign (-) for negative numbers on the axis. The above code changes this behavior and uses a regular minus sign instead. This can make the plots easier to read and understand for some viewers.

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plt.rcParams['axes.unicode_minus'] = False

This line of code is used in Python's Matplotlib library to prevent minus signs from being displayed as Unicode characters. By default, Matplotlib uses Unicode characters to represent minus signs, which can sometimes cause issues when exporting plots or figures to certain file formats or applications. Setting `plt.rcParams['axes.unicode_minus'] = False` tells Matplotlib to use the regular ASCII hyphen (-) character instead of the Unicode minus sign.

plt.rcParams['axes.unicode_minus']=False

这行代码是用来解决 Matplotlib 绘图时负号显示为方块的问题。Matplotlib 默认使用 Unicode 字符集来显示负号，但有些操作系统或字体可能不支持这些字符，因此会显示为方块。设置 `plt.rcParams['axes.unicode_minus']=False` 可以将负号显示为正常的符号。