s**i
发帖数: 381 | 1 Hi there,
I have a question.
Say I have computed a scalar field in a 3D space. I want to know how linear
this field is,i.e, how close it is too
f=a*x+b*y+c*z+d
I basically have a list of points with
x y z f
Is there any way statistics to show this?
Thanks a lot. | h***o
发帖数: 539 | 2 最小二乘法，线性拟合出a, b, c, d
然后求真实f和拟合f的方差不就可以吗？
方差越大，linearity is poorer
【在 s**i 的大作中提到】
: Hi there,
: I have a question.
: Say I have computed a scalar field in a 3D space. I want to know how linear
: this field is,i.e, how close it is too
: f=a*x+b*y+c*z+d
: I basically have a list of points with
: x y z f
: Is there any way statistics to show this?
: Thanks a lot.
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