Regfityint Formulator Function - Keithley 4200A-SCS Reference Manual

Model 4200A-SCS Parameter Analyzer Reference Manual

REGFITYINT Formulator function

Performs a linear regression fit.
Usage
REGFITYINT(VX, VY, STARTPOS, ENDPOS)
VX
VY
STARTPOS
ENDPOS
Details
Performs a linear regression fit as follows:
•
Fits the following relationship, of the form Y = a + bX, to a specified range of values in two
columns (vectors) (column VX containing X values and column VY containing Y values):
Y = REGFITYINT + REGFITSLP * X
where REGFITSLP and REGFITYINT are slope and Y-intercept constants.
•
Returns the value of the Y intercept for relationship above (REGFITYINT).
If a VX or VY value at either STARTPOS or ENDPOS is an invalid number (that is, the value is #REF),
the function will not return a valid result.
Example
OFFSET = REGFITYINT(COLLECTORV, COLLECTORI, 25, LASTPOS(COLLECTORV))
Also see
REGFIT (on page 6-260)
REGFITXINT
4200A-901-01 Rev. C / February 2017
The name of any column (vector) listed under Columns
The name of any column (vector) listed under Columns
For the range of X and Y values to be fitted, the row number (index) of the starting
values
For the range of X and Y values to be fitted, the row number (index) of the ending
values
(on page 6-262)
Section 6: Clarius
6-263