FFT - Revision history

Ak3gseis at 13:36, 10 October 2022

2022-10-10T13:36:22Z

← Older revision		Revision as of 13:36, 10 October 2022
Line 36:		Line 36:
	\|postprocessor=		\|postprocessor=
	[[BOERND]], [[EVENTFILTER]], [[EXCELENZ]], [[FRQWF]], [[GVIEW2D]], [[TIDKEN]], [[TSCALC]], [[UTRRND]], [[ZEITRIO]]		[[BOERND]], [[EVENTFILTER]], [[EXCELENZ]], [[FRQWF]], [[GVIEW2D]], [[TIDKEN]], [[TSCALC]], [[UTRRND]], [[ZEITRIO]]
	\|language=~~Fortran77,~~ FORTRAN90		\|language=FORTRAN90
	\|add_software= -		\|add_software= -
	\|contact_original=I. Uliczka		\|contact_original=I. Uliczka

Ak3gseis at 13:35, 10 October 2022

2022-10-10T13:35:32Z

← Older revision		Revision as of 13:35, 10 October 2022
Line 38:		Line 38:
	\|language=Fortran77, FORTRAN90		\|language=Fortran77, FORTRAN90
	\|add_software= -		\|add_software= -
	\|contact_original=~~[mailto:ingrid.uliczka@baw.de~~ I. Uliczka]		\|contact_original=I. Uliczka
	\|contact_maintenance=[mailto:~~peter~~.~~schade~~@baw.de ~~P. Schade~~]		\|contact_maintenance=[mailto:pre.proghome@baw.de working group PRE]
	\|documentation=please refer to $PROGHOME/examples/fft/		\|documentation=please refer to $PROGHOME/examples/fft/
	}}		}}

imported>BAWiki 1 at 15:20, 17 May 2010

2010-05-17T15:20:15Z

← Older revision		Revision as of 15:20, 17 May 2010
Line 11:		Line 11:
	linear trend<br />		linear trend<br />
	\|shortdescription=		\|shortdescription=
	The program FFT processes the time series results of different ~~mathematical models~~ as well as measured time series. FFT can filter the data, make a spectral analysis and compute a linear trend. It enables the user to modify the analysed data.		The program FFT processes the time series results of different [[Mathematical Models for Coastal Areas and Estuaries]] as well as measured time series. FFT can filter the data, make a spectral analysis and compute a linear trend. It enables the user to modify the analysed data.
	\|inputfiles=		\|inputfiles=
	# general input data (file of type [[FFTEIN.DAT\|fftein.dat]])		# general input data (file of type [[FFTEIN.DAT\|fftein.dat]])

imported>BAWiki 1: Created page with '{{ProgramDescription |name_de=FFT |name=FFT |version=2.x |version_descr= August 2003 |catchwords= analysis of equidistant time series
spectral analysis
filter
…'

2010-05-17T07:20:55Z

Created page with '{{ProgramDescription |name_de=FFT |name=FFT |version=2.x |version_descr= August 2003 |catchwords= analysis of equidistant time series spectral analysis filter …'

New page

{{ProgramDescription
|name_de=FFT
|name=FFT
|version=2.x
|version_descr= August 2003
|catchwords=
analysis of equidistant time series 
spectral analysis 
filter 
fourier transformation 
linear trend 
|shortdescription=
The program FFT processes the time series results of different mathematical models as well as measured time series. FFT can filter the data, make a spectral analysis and compute a linear trend. It enables the user to modify the analysed data.
|inputfiles=
# general input data (file of type [[FFTEIN.DAT|fftein.dat]])
# measured or numerically computed time series (file of type [[BOEWRT.DAT|boewrt.dat]] or [[KNOERG.BIN|knoerg.bin]])
'''Bold text'''|outputfiles=
# lineprinter file with information about spectrum and time series (file of type fftsdr.dat)
# filtered time series (file of type [[SOLWRT.DAT|solwrt.dat]])
# batch file for the program [[ZEITRIO]] to convert the filtered time series into a file of type [[BOEWRT.DAT|boewrt.dat]]
# linear trend of a time series (file of type [[SOLWRT.DAT|solwrt.dat]])
# original time series with the subtracted linear trend (file of type [[SOLWRT.DAT|solwrt.dat]])
|methodology=
The program FFT may be used to analyse and modify time series with equidistant time steps. These are the features in detail:

* computation of a '''discrete spectrum''' by means of a fourier transformation
* computation of a power spectrum
* computation of correlating spectra and and of a function to correlate two time series
* diverse '''filter types'''
* computation of inverse fourier transformation; '''generation of an equidistant time series''' out of the (filtered) discrete spectrum
* computation of a '''linear trend'''
* subtraction of the linear trend from the original time series
* subtraction of the difference of the linear trends of two time series from the input data of the first originsl time series
|preprocessor=
[[MESKOR]], [[XTRDATA]], [[ZEITRIO]]
|postprocessor=
[[BOERND]], [[EVENTFILTER]], [[EXCELENZ]], [[FRQWF]], [[GVIEW2D]], [[TIDKEN]], [[TSCALC]], [[UTRRND]], [[ZEITRIO]]
|language=Fortran77, FORTRAN90
|add_software= -
|contact_original=[mailto:ingrid.uliczka@baw.de I. Uliczka]
|contact_maintenance=[mailto:peter.schade@baw.de P. Schade]
|documentation=please refer to $PROGHOME/examples/fft/
}}

FFT - Revision history

Ak3gseis at 13:36, 10 October 2022

Ak3gseis at 13:35, 10 October 2022

imported>BAWiki 1 at 15:20, 17 May 2010

imported>BAWiki 1: Created page with '{{ProgramDescription |name_de=FFT |name=FFT |version=2.x |version_descr= August 2003 |catchwords= analysis of equidistant time series spectral analysis filter…'

imported>BAWiki 1: Created page with '{{ProgramDescription |name_de=FFT |name=FFT |version=2.x |version_descr= August 2003 |catchwords= analysis of equidistant time series
spectral analysis
filter
…'