+++ /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: Sep 29, 2000 */
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <limits.h>
-#include <time.h>
-#include "routines/tsa.h"
-
-#define WID_STR "Adds noise to a time series or just creates random numbers"
-
-char *outfile=NULL,cgaussian,stout=1,justcreate=0;
-char *infile=NULL;
-char absolute=0,dimset=0;
-unsigned long length=ULONG_MAX,exclude=0,iseed=3441341;
-unsigned int dim=1;
-char *column=NULL;
-unsigned int verbosity=0xff;
-double **array,noiselevel=0.05;
-
-void show_options(char *progname)
-{
- what_i_do(progname,WID_STR);
- fprintf(stderr," Usage: %s [Options]\n\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 be used [Default: whole file]\n");
- fprintf(stderr,"\t-x # of lines to be ignored [Default: %lu]\n",exclude);
- fprintf(stderr,"\t-m # of columns to read [Default: %u]\n",dim);
- fprintf(stderr,"\t-c column(s) to read [Default: 1]\n");
- fprintf(stderr,"\t-%% noiselevel in %% [Default: %.1e%%]\n",
- noiselevel*100.0);
- fprintf(stderr,"\t-r absolute noise level (or absolute variance in case\n"
- "\t\tof gaussian noise) [Default: not set]\n");
- fprintf(stderr,"\t-g (use gaussian noise) [Default: uniform]\n");
- fprintf(stderr,"\t-I seed for the rnd-generator (If seed=0, the time\n"
- "\t\tcommand is used to set the seed) [Default: fixed]\n");
- fprintf(stderr,"\t-0 do not read input, just generate random numbers\n\t\t"
- "(needs -l and -r) [Default: not set]\n");
- fprintf(stderr,"\t-o outfile [Without argument 'datafile'.noi;"
- " Without -o stdout is used]\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," -h show these options");
- fprintf(stderr,"\n");
- exit(0);
-}
-
-void scan_options(int n,char** in)
-{
- char *out,lengthset=0;
-
- if ((out=check_option(in,n,'l','u')) != NULL) {
- sscanf(out,"%lu",&length);
- lengthset=1;
- }
- 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,'%','f')) != NULL) {
- sscanf(out,"%lf",&noiselevel);
- noiselevel /= 100.0;
- }
- if ((out=check_option(in,n,'r','f')) != NULL) {
- sscanf(out,"%lf",&noiselevel);
- absolute=1;
- }
- if ((out=check_option(in,n,'g','n')) != NULL)
- cgaussian=1;
- if ((out=check_option(in,n,'I','u')) != NULL) {
- sscanf(out,"%lu",&iseed);
- if (iseed == 0)
- iseed=(unsigned long)time((time_t*)&iseed);
- }
- if ((out=check_option(in,n,'0','n')) != NULL) {
- if (absolute && lengthset)
- justcreate=1;
- else {
- fprintf(stderr,"\nThe -0 flag requires -l and -r\n\n");
- exit(MAKENOISE__FLAGS_REQUIRED);
- }
- }
-
- if ((out=check_option(in,n,'V','u')) != NULL)
- sscanf(out,"%u",&verbosity);
- if ((out=check_option(in,n,'o','o')) != NULL) {
- stout=0;
- if (strlen(out) > 0)
- outfile=out;
- }
-}
-
-void equidistri(double sigmax,unsigned int which)
-{
- int i;
- double limit,equinorm;
-
- equinorm=(double)ULONG_MAX;
- if (!absolute)
- limit=2.0*sqrt(3.0)*sigmax*noiselevel;
- else
- limit=2.0*noiselevel;
- for (i=0;i<length;i++)
- array[which][i] += (limit*((double)rnd_1279()/equinorm-0.5));
-}
-
-void gauss(double sigmax,unsigned int which)
-{
- int i;
- double glevel;
-
- if (!absolute)
- glevel=noiselevel*sigmax;
- else
- glevel=noiselevel;
- for (i=0;i<length;i++)
- array[which][i] += gaussian(glevel);
-}
-
-int main(int argc,char** argv)
-{
- char stdi=0;
- unsigned long i,j;
- double av=0.0,*sigmax;
- FILE *fout;
-
- 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
-
- if (!justcreate) {
- infile=search_datafile(argc,argv,NULL,verbosity);
- if (infile == NULL)
- stdi=1;
- }
- else
- stdi=1;
-
- if (outfile == NULL) {
- if (!stdi) {
- check_alloc(outfile=(char*)calloc(strlen(infile)+5,(size_t)1));
- strcpy(outfile,infile);
- strcat(outfile,".noi");
- }
- else {
- check_alloc(outfile=(char*)calloc((size_t)10,(size_t)1));
- strcpy(outfile,"stdin.noi");
- }
- }
- if (!stout)
- test_outfile(outfile);
-
- if (!justcreate) {
- if (column == NULL)
- array=(double**)get_multi_series(infile,&length,exclude,&dim,"",dimset,
- verbosity);
- else
- array=(double**)get_multi_series(infile,&length,exclude,&dim,column,
- dimset,verbosity);
- }
- else {
- check_alloc(array=(double**)malloc(sizeof(double*)*dim));
- for (i=0;i<dim;i++) {
- check_alloc(array[i]=(double*)malloc(sizeof(double)*length));
- for (j=0;j<length;j++)
- array[i][j]=0.0;
- }
- }
-
- check_alloc(sigmax=(double*)malloc(sizeof(double)*dim));
-
- if (!absolute) {
- for (j=0;j<dim;j++)
- variance(array[j],length,&av,&sigmax[j]);
- }
-
- rnd_init(iseed);
-
- for (i=0;i<10000;i++) rnd_1279();
-
- for (j=0;j<dim;j++) {
- if (!cgaussian)
- equidistri(sigmax[j],j);
- else
- gauss(sigmax[j],j);
- }
-
- if (!stout) {
- fout=fopen(outfile,"w");
- if (verbosity&VER_INPUT)
- fprintf(stderr,"Opened %s for writing\n",outfile);
- for (i=0;i<length;i++) {
- for (j=0;j<dim-1;j++)
- fprintf(fout,"%e ",array[j][i]);
- fprintf(fout,"%e\n",array[dim-1][i]);
- }
- fclose(fout);
- }
- else {
- if (verbosity&VER_INPUT)
- fprintf(stderr,"Writing to stdout\n");
- for (i=0;i<length;i++) {
- for (j=0;j<dim-1;j++)
- fprintf(stdout,"%e ",array[j][i]);
- fprintf(stdout,"%e\n",array[dim-1][i]);
- }
- }
-
- for (i=0;i<dim;i++)
- free(array[i]);
- free(array);
- free(sigmax);
- if (outfile != NULL)
- free(outfile);
- if (infile != NULL)
- free(infile);
- if (column != NULL)
- free(column);
-
- return 0;
-}
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