+++ /dev/null
-c===========================================================================
-c
-c This file is part of TISEAN
-c
-c Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
-c
-c TISEAN is free software; you can redistribute it and/or modify
-c it under the terms of the GNU General Public License as published by
-c the Free Software Foundation; either version 2 of the License, or
-c (at your option) any later version.
-c
-c TISEAN is distributed in the hope that it will be useful,
-c but WITHOUT ANY WARRANTY; without even the implied warranty of
-c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-c GNU General Public License for more details.
-c
-c You should have received a copy of the GNU General Public License
-c along with TISEAN; if not, write to the Free Software
-c Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-c
-c===========================================================================
-c power spectrum of spike trains
-c author T. Schreiber (1999)
-c===========================================================================
- parameter(nx=1000000)
- dimension x(nx), lx(nx), sp(nx)
- character*72 file, fout
- data iverb/1/
-
- call whatido("power spectrum of spike trains",iverb)
- nmaxx=ican("l",nx)
- nexcl=ican("x",0)
- jcol=ican("c",0)
- fmax=fcan("F",0)
- nfreq=min(ican("#",0),nx)
- fres=fcan("w",0)
- inter=lopt("i",1)
- isout=igetout(fout,iverb)
-
- do 10 ifi=1,nstrings()
- call nthstring(ifi,file)
- nmax=nmaxx
- call readfile(nmax,x,nexcl,jcol,file,iverb)
- if(inter.eq.0) goto 1
- do 20 n=2,nmax
- 20 x(n)=x(n)+x(n-1)
- 1 call sort(nmax,x,lx)
- if(fmax.le.0.) fmax=2*nmax/(x(nmax)-x(1))
- if(nfreq.le.0) nfreq=fmax*(x(nmax)-x(1))/2
- write(istderr(),*) "spikespec: total time covered: ",
- . x(nmax)-x(1)
- write(istderr(),*) "spikespec: computing ", nfreq,
- . " frequencies up to ", fmax
- do 30 n=1,nfreq
- f=(n*fmax)/nfreq
- 30 sp(n)=sspect(nmax,x,f)
- ibin=nfreq*fres/2
- if(ibin.gt.0) write(istderr(),*)
- . "spikespec: binning", 2*ibin+1," frequencies"
- if(file.eq."-") file="stdin"
- if(isout.eq.1) call addsuff(fout,file,"_ss")
- call outfile(fout,iunit,iverb)
- do 40 n=1+ibin,nfreq-ibin,2*ibin+1
- f=(n*fmax)/nfreq
- p=0
- do 50 ib=n-ibin,n+ibin
- 50 p=p+sp(ib)
- 40 write(iunit,*) f, p
- if(iunit.eq.istdout()) write(iunit,*)
- if(iunit.eq.istdout()) write(iunit,*)
- 10 if(iunit.ne.istdout()) close(iunit)
- end
-
- function sspect(nmax,x,f)
- dimension x(nmax)
- data pi/3.1415926/
-
- omega=2*pi*f
- sr=0
- si=0
- do 10 n=1,nmax
- sr=sr+cos(omega*x(n))
- 10 si=si+sin(omega*x(n))
- sspect=sr**2+si**2
- end
-
- subroutine usage()
-c usage message
-
- call whatineed(
- . "[-F# -## -w# -i -o outfile -l# -x# -c# -V# -h] file(s)")
- call popt("F","maximal frequency [2*l / total time]")
- call popt("#","number of frequencies [F* total time /2]")
- call popt("w","frequency resolution [0]")
- call popt("i","input data: intervals rather than times")
- call popt("l","number of values to be read [all]")
- call popt("x","number of values to be skipped [0]")
- call popt("c","column to be read [1 or file,#]")
- call pout("file_ss")
- call pall()
- stop
- end
-
-
-