## Command FPEAKS

Parameters Defaults
FPEAKS number
/
GAUSSIAN
LORENTZIAN
FWHM(ff) 8
AREA(aa) 0
SIGNIFICANCE(si) 1
PROMPT
DELETE
NODISPLAY
NOSEARCH
**Purpose**
Specifies Gaussian or Lorentzian peaks as fit function via automatic search,
prompting input or global fit windows.

## Parameter NUMBER

Maximum number of peaks to be located. If **number**=***** the peaks are
defined by the fit windows (see command FWIN)
assuming that each window contains one peak.

## Parameter GAUSSIAN

Specifies Gaussian peaks.

## Parameter LORENTZIAN

Specifies Lorentzian peaks.

## Parameter FWHM(ff)

Expected peak full widths at half maximum, in units of the x-axis.
The width parameter is needed for the automatic peak search
or if only the peak centres are given (command parameter PROMPT).

## Parameter AREA(aa)

Lower limit of net peak areas for automatic peak search.

## Parameter SIGNIFICANCE(si)

Lower limit of statistical significance.
Only peaks with standard deviations exceeding statistical fluctuations
by more than a factor **si** are accepted.

## Parameter PROMPT

Peak locations (and heights) are given by graphical cursor
or, if no cursor is available, by terminal input.

## Parameter DELETE

Remove peaks from fit function by cursor. Not yet implemented.

## Parameter NODISPLAY

Don't display the located peaks.

## Parameter NOSEARCH

Don't locate the peaks, just define the specified number of peaks.
Use fit command FPAR to assign start values.