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- [a:b]
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- Intersection of sequences
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polyfit()
Description:
Calculate the coefficient between two vectors in polynomial fitting.
Syntax:
polyfit(X,Y,n)
Note:
The function calculates the coefficient between vector X and vector Y, which are of same dimension, in a polynomial fitting with the degree of polynomial as n, and returns a sequence of n+1 coefficients ordered from low order to high order.
Parameter:
|
X/Y |
Vectors of same dimension |
|
n |
A non-zero positive integer |
Return value:
Sequence
Example:
|
|
A |
|
|
1 |
[3,5,2,8] |
|
|
2 |
[4,6,2,4] |
|
|
3 |
=polyfit(A1,A2,2) |
Or can be represented as -0.333333x2+3.666667x-4. |
