反向输出polyfit numpy

问题描述

我使用了numpy的polyfit，并为两个数组x和y获得了很好的拟合（使用7阶多项式）。我的关系就是这样；

I have used numpy's polyfit and obtained a very good fit (using a 7th order polynomial) for two arrays, x and y. My relationship is thus;

 c的值，您应该看到代码只对<$的所有随机值有效 degree = 1 时，c $ c> a 。偶尔对其他学位也可以，但是当有很多最小值/最大值时则不行。对于 degree>来说，它永远做不完美。 1 ，因为用平方根函数近似抛物线并不总是有效，等等。
By playing around with the value of degree, you should see that see the code only works well for all random values of a when degree=1.  It occasionally does OK for other degrees, but not when there are lots of minima / maxima.  It never does perfectly for degree > 1 because approximating parabolas with square-root functions doesn't always work, etc.
                        
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