Linfit Formulator Function - Keithley 4200A-SCS Reference Manual

Hide thumbs Also See for 4200A-SCS:

Table of Contents

Section 6: Clarius

LINFIT Formulator function

Finds a linear equation and returns a new column (vector).

LINFIT(VX, VY, STARTPOS, ENDPOS)

Finds a linear equation of the form Y = a + bX from two sets of X and Y values selected from two

columns (vectors), VX and VY. This equation corresponds to a line drawn through two points on a

curve that is created by plotting the values in VY against the values in VX. The two points are

specified by the arguments STARTPOS and ENDPOS.

Using the linear equation, returns a new column (vector) containing Y values calculated from all X

values in column VX.

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.

To return a linear regression fit for two columns (vectors), use the REGFIT function.

RESISTORFIT = LINFIT (rESV, RESI, FIRSTPOS(rESV), LASTPOS(rESV))

(on page 6-260)

The name of any column (vector) listed under Columns

The row number (index) of the first set of X and Y values

The row number (index) of the second set of X and Y values

Model 4200A-SCS Parameter Analyzer Reference Manual

4200A-901-01 Rev. C / February 2017