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- ; CFIT1.EKA
- ;
- ; version 1.0
- ; August 10, 1987
- ; Copyright (c) Namir Clement Shammas
- ;
- ; Least-square fitting between two variables
- ;
- ; general model is: f(x) = expression of variable x
- ;
- ; examples:
- ;
- ; Simple models
- ; -------------
- ;
- ; linear fitting ---> f(x) = a0 + a1 * x
- ; power fitting ---> f(x) = a0 * x^a1
- ; logarithmic fitting ---> f(x) = a0 + a1 * Ln(x)
- ; exponential fitting ---> f(x) = exp(a0 + a1 * x)
- ; reciprocal fitting ---> f(x) = a0 + a1 / x
- ; square-root fitting ---> f(x) = a0 + a1 * sqrt(x)
- ;
- ; Advanced models
- ; ---------------
- ;
- ; quadratic fitting ---> f(x) = a0 + a1 * x + a2 * x^2
- ; cubic fitting ---> f(x) = a0 + a1 * x + a2 * x^2 + a3 * X^3
- ; hybrid fitting e.g.:
- ; f(x) = b1 / x + b0 * Ln(x) + a0 + a1 * x + a2 *x^2
-
- $ substlevel = 0
-
- ; state selected model here
- ; Model: power
- f(x) = a0 * x^a1
-
- f(1) = 1
- f(2) = 4.1
- f(3) = 8.9
- f(4) = 16
- f(5) = 25
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