--- /dev/null
+/*
+ * This file is part of TISEAN
+ *
+ * Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
+ *
+ * TISEAN is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * TISEAN is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with TISEAN; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+/*Author: Rainer Hegger Last modified: Dec 17, 1999 */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <limits.h>
+#include "routines/tsa.h"
+
+#define WID_STR "Determines the maxima (minima) of a possibly multivariate\
+ time series"
+
+
+unsigned long length=ULONG_MAX,exclude=0;
+char *column=NULL;
+unsigned int verbosity=0xff;
+unsigned int dim=1;
+unsigned int which=1;
+double mintime=0.0;
+char dimset=0;
+char maxima=1;
+char stdo=1;
+char *outfile=NULL;
+char *infile=NULL;
+
+void show_options(char *progname)
+{
+ what_i_do(progname,WID_STR);
+ fprintf(stderr,"Usage: %s [options]\n",progname);
+ fprintf(stderr,"Options:\n");
+ fprintf(stderr,"Everything not being a valid option will be interpreted"
+ " as a possible"
+ " datafile.\nIf no datafile is given stdin is read. Just - also"
+ " means stdin\n");
+ fprintf(stderr,"\t-l # of points to use [Default: whole file]\n");
+ fprintf(stderr,"\t-x # of lines to be ignored [Default: 0]\n");
+ fprintf(stderr,"\t-m dimension (# of components) [Default: 1]\n");
+ fprintf(stderr,"\t-c columns to read [Default: 1,...,# of components]\n");
+ fprintf(stderr,"\t-w which component to maxi(mini)mize [Default: 1]\n");
+ fprintf(stderr,"\t-z determine minima instead of maxima [Default: maxima]\n");
+ fprintf(stderr,"\t-t minimal required time between two extrema "
+ "[Default: 0.0]\n");
+ fprintf(stderr,"\t-o output file name [Default: 'datafile'.ext,"
+ " without -o: stdout]\n");
+ fprintf(stderr,"\t-V verbosity level [Default: 1]\n\t\t"
+ "0='only panic messages'\n\t\t"
+ "1='+ input/output messages'\n");
+ fprintf(stderr,"\t-h show these options\n");
+ exit(0);
+}
+
+void scan_options(int n,char **in)
+{
+ char *out;
+
+ if ((out=check_option(in,n,'l','u')) != NULL)
+ sscanf(out,"%lu",&length);
+ if ((out=check_option(in,n,'x','u')) != NULL)
+ sscanf(out,"%lu",&exclude);
+ if ((out=check_option(in,n,'m','u')) != NULL) {
+ sscanf(out,"%u",&dim);
+ dimset=1;
+ }
+ if ((out=check_option(in,n,'c','s')) != NULL)
+ column=out;
+ if ((out=check_option(in,n,'w','u')) != NULL)
+ sscanf(out,"%u",&which);
+ if ((out=check_option(in,n,'z','n')) != NULL)
+ maxima=0;
+ if ((out=check_option(in,n,'t','f')) != NULL)
+ sscanf(out,"%lf",&mintime);
+ if ((out=check_option(in,n,'V','u')) != NULL)
+ sscanf(out,"%u",&verbosity);
+ if ((out=check_option(in,n,'o','o')) != NULL) {
+ stdo=0;
+ if (strlen(out) > 0)
+ outfile=out;
+ }
+}
+
+int main(int argc,char **argv)
+{
+ char stdi=0;
+ unsigned long i,j;
+ double **series;
+ double x[3],a,b,c,lasttime,nexttime,time;
+ FILE *fout=NULL;
+
+ if (scan_help(argc,argv))
+ show_options(argv[0]);
+
+ scan_options(argc,argv);
+#ifndef OMIT_WHAT_I_DO
+ if (verbosity&VER_INPUT)
+ what_i_do(argv[0],WID_STR);
+#endif
+
+ which--;
+ if (which > (dim-1)) {
+ fprintf(stderr,"The component to maxi(mini)mize has to be smaller or equal"
+ "to the number\nof components! Exiting\n");
+ exit(EXTREMA_STRANGE_COMPONENT);
+ }
+ infile=search_datafile(argc,argv,NULL,verbosity);
+ if (infile == NULL)
+ stdi=1;
+
+ if (outfile == NULL) {
+ if (!stdi) {
+ check_alloc(outfile=(char*)calloc(strlen(infile)+5,(size_t)1));
+ sprintf(outfile,"%s.ext",infile);
+ }
+ else {
+ check_alloc(outfile=(char*)calloc((size_t)10,(size_t)1));
+ sprintf(outfile,"stdin.ext");
+ }
+ }
+
+ if (column == NULL)
+ series=(double**)get_multi_series(infile,&length,exclude,&dim,"",dimset,
+ verbosity);
+ else
+ series=(double**)get_multi_series(infile,&length,exclude,&dim,column,
+ dimset,verbosity);
+
+ if (!stdo) {
+ test_outfile(outfile);
+ fout=fopen(outfile,"w");
+ if (verbosity&VER_INPUT)
+ fprintf(stderr,"Opened %s for writing\n",outfile);
+ }
+ else {
+ if (verbosity&VER_INPUT)
+ fprintf(stderr,"Writing to stdout\n");
+ }
+
+ lasttime=0.0;
+ x[0]=series[which][0];
+ x[1]=series[which][1];
+ for (i=2;i<length;i++) {
+ x[2]=series[which][i];
+ if (maxima) {
+ if ((x[1] >= x[0]) && (x[1] > x[2])) {
+ a=x[1];
+ b=(x[2]-x[0])/2.0;
+ c=(x[2]-2.0*x[1]+x[0])/2.0;
+ time= -b/2.0/c;
+ nexttime=(double)i-1.0+time;
+ if ((nexttime-lasttime) >= mintime) {
+ for (j=0;j<dim;j++) {
+ a=series[j][i-1];
+ b=(series[j][i]-series[j][i-2])/2.0;
+ c=(series[j][i]-2.0*series[j][i-1]+series[j][i-2])/2.0;
+ if (!stdo)
+ fprintf(fout,"%e ",a+b*time+c*sqr(time));
+ else
+ fprintf(stdout,"%e ",a+b*time+c*sqr(time));
+ }
+ if (!stdo)
+ fprintf(fout,"%e\n",nexttime-lasttime);
+ else
+ fprintf(stdout,"%e\n",nexttime-lasttime);
+ lasttime=nexttime;
+ }
+ }
+ }
+ else {
+ if ((x[1] <= x[0]) && (x[1] < x[2])) {
+ a=x[1];
+ b=(x[2]-x[0])/2.0;
+ c=(x[2]-2.0*x[1]+x[0])/2.0;
+ time= -b/2.0/c;
+ nexttime=(double)i-1.0+time;
+ if ((nexttime-lasttime) >= mintime) {
+ for (j=0;j<dim;j++) {
+ a=series[j][i-1];
+ b=(series[j][i]-series[j][i-2])/2.0;
+ c=(series[j][i]-2.0*series[j][i-1]+series[j][i-2])/2.0;
+ if (!stdo)
+ fprintf(fout,"%e ",a+b*time+c*sqr(time));
+ else
+ fprintf(stdout,"%e ",a+b*time+c*sqr(time));
+ }
+ if (!stdo)
+ fprintf(fout,"%e\n",nexttime-lasttime);
+ else
+ fprintf(stdout,"%e\n",nexttime-lasttime);
+ lasttime=nexttime;
+ }
+ }
+ }
+ x[0]=x[1];
+ x[1]=x[2];
+ }
+ if (!stdo)
+ fclose(fout);
+
+ if (infile != NULL)
+ free(infile);
+ if (outfile != NULL)
+ free(outfile);
+ for (i=0;i<dim;i++)
+ free(series[i]);
+ free(series);
+
+ return 0;
+}
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