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<< Click to Display Table of Contents >> Navigation: Explain™ Control Language > Library Routines > Mathematical classes > class LINFIT |
The LINFIT class performs a linear least-squares fit of y- and x-data arrays.
The data arrays are normally extracted from one of the Explain CURVE type object. The fit is to an equation of the form:
The fit results in estimates for m, b, a residual and a goodness-of-fit parameter.
The most common use of an Explain LINFIT object is in polarization resistance calculations. The data arrays are chosen to include a corrosion potential (where the current changes sign). If the x-array is current and the y-array is potential, the slope m is the polarization resistance with units of Ω.