home *** CD-ROM | disk | FTP | other *** search
Text File | 1990-03-22 | 684 b | 28 lines | [TEXT/QNTA] |
- ;
- ; This is an example of a curve fit using Quinta. The message polyfit
- ; accepts an integer and a matrix of points. The matrix must be of
- ; dimensions n by 2, where each row of the matrix is a data point, the
- ; x coordinates in column 1. The integer argument is the order of the
- ; desired polynomial. The example below requests the polynomial of
- ; order 2 which best fits the 4 data points (-2,6) (-1,0) (1,8) (2,17).
- ;
-
- 2
-
- -2 6 -1 0 1 8 2 17 4 2 >dim >mat
-
- polyfit
-
- print
-
- ; The resulting matrix is indicated below. This means that the best
- ; fit 2nd order polynomial (in x) for the above data points is:
-
- ; 1.5 + 3x + (2.5)x^2
-
- ; | 1.5 |
- ; | 3 |
- ; | 2.5 |
-
-
-