CURVEFIT SPL Directory

The Curvefit SPL directory contains functions for curve fitting. The following functions are included:

EXPFIT	Fits y(x) = A exp(Bx) using linearization.
GAUSSFIT	Fits y(x) = A exp(-B(x-C)²) using linearization.
LFIT	Fits a line to a series using the end points.
LINFIT	Fits an arbitrary set of basis functions to a series using the least squares method.
LSINFIT	Performs known frequency sine curve fitting using the least squares method.
PFIT	Performs Least Squares Polynomial fitting with error statistics.
POWFIT	Fits y(x) = A x^b using linearization.
SINFIT	Fits y(x) = A + B sin(Cx + D) using the FFT.
SINFIT3	Fits three term cosine conforming to IEEE Std 1241-2010
SINFIT4	Iterative three term cosine fit conforming to IEEE Std 1241-2010
SINTREND	Fits y(x) = A + Bx + C sin(Dx + E) using the FFT.