1 c===========================================================================
3 c This file is part of TISEAN
5 c Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
7 c TISEAN is free software; you can redistribute it and/or modify
8 c it under the terms of the GNU General Public License as published by
9 c the Free Software Foundation; either version 2 of the License, or
10 c (at your option) any later version.
12 c TISEAN is distributed in the hope that it will be useful,
13 c but WITHOUT ANY WARRANTY; without even the implied warranty of
14 c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 c GNU General Public License for more details.
17 c You should have received a copy of the GNU General Public License
18 c along with TISEAN; if not, write to the Free Software
19 c Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 c===========================================================================
24 c author Thomas Schreiber (1998)
25 c===========================================================================
26 double precision xo, yo, xn, yn, a, b, c, s, cs, ss
28 data a/0.4/,b/6.0/,c/0.9/,
29 . ntrans/10000/,xo/.68587/,yo/.65876/
32 call whatido("Ikeda map",iverb)
34 ntrans=ican('x',ntrans)
40 isout=igetout(fout,iverb)
42 if(isout.eq.1) fout="ikeda.dat"
43 call outfile(fout,iunit,iverb)
46 s=a-b/(1.+xo**2+yo**2)
54 write(iunit,*) real(xn), real(yn)
55 if(nmax.eq.0.or.n.lt.nmax) goto 1
62 . "-l# [-A# -B# -C# -R# -I# -o outfile -x# -V# -h]")
63 call popt("l","number of points x,y (l=0: infinite)")
64 call popt("A","parameter a (0.4)")
65 call popt("B","parameter b (6.0)")
66 call popt("C","parameter c (0.9)")
67 call popt("R","initial Re(z)")
68 call popt("I","initial Im(z)")
69 call popt("x","number of transients discarded (10000)")
70 call pout("ikeda.dat")