LTPDA Toolbox™

Method ao/polyfitSpectrum

  POLYFITSPECTRUM does a polynomial fit to the log of the input spectrum.
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  DESCRIPTION: POLYFITSPECTRUM does a polynomial fit to the log of the
               input spectrum.
  
  The method returns the fitted model spectrum as an fsdata AO, evaluated
  at the frequencies specified. In the procinfo of the output objects
  contains the fit as a pest object.
 
  CALL:        bs = polyfitSpectrum(a1,a2,a3,...,pl)
               bs = polyfitSpectrum(as,pl)
               bs = polyfitSpectrum.psd(pl)
 
  INPUTS:      aN   - input fsdata analysis objects
               as   - input fsdata analysis objects array
               pl   - input parameter list
 
  OUTPUTS:     bs   - array of analysis objects, one for each input
 
  Parameters Description
 
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Method Details
Access	public
Defining Class	ao
Sealed	0
Static	0

Parameter Description

Sets for this method …
Default

Default
no description
Key	Default Value	Options	Description
polyfitSpectrum
FFIT	[]	none	The frequency range on which to split the input data for fitting in the form [f1 f2]. If empty, the full input spectrum will be fit.
FOUT	[]	none	The frequency range on which to evaluate the fit. If empty, the full range of the input spectrum will be used.
ORDERS	[]	none	The orders of polynomial to fit to the spectrum.
PLOT FITS	0	0 1	Set to true to produce plots of the fits.
REGULARIZECOEFF	[]	none	Regularization coefficient. Leave it empty if you do not want to do regularization.

Example
plist('FFIT', [[]], 'FOUT', [[]], 'ORDERS', [[]], 'PLOT FITS', [false], 'REGULARIZECOEFF', [[]])

Some information of the method ao/polyfitSpectrum are listed below:
Class name	ao
Method name	polyfitSpectrum
Category	Signal Processing
Package name	ltpda
VCS Version	967b0eec0dece803a81af8ef54ad2f8c784b20b2
Min input args	1
Max input args	-1
Min output args	1
Max output args	-1
Can be used as modifier	1
Supported numeric types	{'double'}

Method: ao/polyfit

Method: ao/polynomfit

Method ao/polyfitSpectrum

Parameter Description

Default

Example