it receive the following error when use matplotlib
MathTextWarning: Font ‘default’ does not have a glyph for ‘-‘ [U+2212], substituting with a dummy symbol. MathTextWarning) Answer You’re probably using the “wrong” minus sign. Try using U+002D, or HYPEN-MINUS instead as this is more commonly used as the minus sign for programming languages. AttributionSource : Link , Question Author : Scheng.xiang , Answer Author … Read more