Parameters  Defaults

FPOS peaks     
     /
     GUESS(gg) 
     MIN(mn)   
     MAX(mx)   
     DIFF(pref)
     QUOT(pref)
     FIX       
     VARY      
     RELATIVE  
     NOLIM     
     LIST      
     EON       
     EOFF      

Purpose

  Defines values and attributes of peak positions.

Example

  FPOS 3 / diff(4) g(80) r

  fixes the difference of the positions of peaks number 3 and 4 (#3-#4) to 80.
  Peak number 4 is the reference peak (not changed).
  Position of peak number 3 is set to the position of peak number 4 + 80.

  FPOS 3 / diff(4) g(80)

  The position of peak number 3 is set to 80.
  The difference of the positions of peaks number 3 and 4 (#3-#4) is fixed at the value
  80 minus the position of peak number 4.
 

List of peak numbers. * means all peaks.
   

List of guess values for peak positions.
If only a single value is given it is assigned to all specified peaks.

List of lower limits for peak positions.
Must not exceed the current values of peak positions.
Further conventions see command parameter GUESS().

List of upper limits for peak positions.
Must not be exceeded by the current values of peak positions.
Further conventions see command parameter GUESS().

The specified peak positions are relatively fixed.
The differences or quotients, respectively,
of the specified peaks and the reference peak pref
are held constant during iterations.

The specified peak positions are held constant during iterations

The specified peak positions are allowed to vary during iterations

For relatively fixed peak positions (DIFF() QUOT())
the guess values (GUESS()) are assumed
to be difference, sum or quotient with respect to the corresponding
reference peak parameters.

Limits of the specified positions are set to infinity

List the specified peak positions

Enable asymmetric error analysis for peak positions.
This might be time consuming

Disable asymmetric error analysis for peak positions.