Parameters   Defaults

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

Purpose

  Defines values and attributes of peak widths.

Example

  FWIDTH 3 / QUOT(4) g(2) r

  fixes the quotient of the widths of peaks number 3 and 4 (#3/#4) to 2.
  Peak number 4 is the reference peak (not changed).
  Width of peak number 3 is set to the width of peak number 4 times 2.

  FWIDTH 3 / QUOT(4) g(2)

  The width of peak number 3 is set to 2.
  The quotient of the widths of peaks number 3 and 4 (#3/#4) is fixed at the value
  2 divided by the width of peak number 4.
 

List of peak numbers. * means all peaks.
   

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

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

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

The specified peak widths are relatively fixed.
The quotients of the specified peaks and the reference peak pref
are held constant during iterations.

The specified peak widths are held constant during iterations

The specified peak widths are allowed to vary during iterations

For relatively fixed peak widths (QUOT())
the guess values (GUESS()) are assumed
to be quotients with respect to the corresponding reference peak parameters.

Limits of the specified widths are set to infinity

List the specified peak widths

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

Disable asymmetric error analysis for peak widths.