noisymize.cc 12.5 KB
Newer Older
1
2
3
4
5
/*! \file noisymize.cc
 * \brief program reads a set of SFF traces, convolves them with white noise and stacks
 * 
 * ----------------------------------------------------------------------------
 * 
thomas.forbriger's avatar
thomas.forbriger committed
6
 * $Id: noisymize.cc,v 1.10 2007-03-09 09:52:20 tforb Exp $
7
8
9
10
11
12
13
14
15
 * \author Thomas Forbriger
 * \date 27/06/2006
 * 
 * program reads a set of SFF traces, convolves them with white noise and stacks
 * 
 * Copyright (c) 2006 by Thomas Forbriger (BFO Schiltach) 
 * 
 * REVISIONS and CHANGES 
 *  - 27/06/2006   V1.0   Thomas Forbriger
thomas.forbriger's avatar
thomas.forbriger committed
16
 *  - 11/07/2006   V1.1   keep result of full convolution length
thomas.forbriger's avatar
thomas.forbriger committed
17
 *  - 26/02/2007   V1.2   report factors
thomas.forbriger's avatar
thomas.forbriger committed
18
 *  - 02/03/2007   V1.3   scale with offset
thomas.forbriger's avatar
thomas.forbriger committed
19
 *                 V1.4   special scaling for horizontal component
thomas.forbriger's avatar
thomas.forbriger committed
20
21
22
23
 *  - 08/03/2007   V1.5   
 *                        - allow switching of offset specific scaling
 *                        - added description in help section
 *                        - improved out format of list of factors
24
25
26
27
 * 
 * ============================================================================
 */
#define NOISYMIZE_VERSION \
thomas.forbriger's avatar
thomas.forbriger committed
28
29
  "NOISYMIZE   V1.5   program reads a set of SFF traces,\n" \
  "                   convolves them with white noise and stacks"
30
#define NOISYMIZE_CVSID \
thomas.forbriger's avatar
thomas.forbriger committed
31
  "$Id: noisymize.cc,v 1.10 2007-03-09 09:52:20 tforb Exp $"
32
33
34
35

#include <fstream>
#include <iostream>
#include <string>
thomas.forbriger's avatar
thomas.forbriger committed
36
#include <cmath>
37
38
39
#include <tfxx/commandline.h>
#include <tfxx/error.h>
#include <aff/series.h>
thomas.forbriger's avatar
thomas.forbriger committed
40
#include <aff/seriesoperators.h>
41
42
43
#include <tsxx/tsxx.h>
#include <tsxx/convolve.h>
#include <tsxx/sffheaders.h>
thomas.forbriger's avatar
thomas.forbriger committed
44
#include <tsxx/random.h>
45
46
47
48
49
50
51
52
#include <datreadxx/readany.h>

using std::cout;
using std::cerr;
using std::endl;

// put all commandline settings into a struct
struct Options {
thomas.forbriger's avatar
thomas.forbriger committed
53
  bool verbose, setnoiselength, overwrite, reportfactors;
thomas.forbriger's avatar
thomas.forbriger committed
54
  bool noscaling;
thomas.forbriger's avatar
thomas.forbriger committed
55
  int noiselength;
thomas.forbriger's avatar
thomas.forbriger committed
56
  double offexp;
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
  std::string inputformat;
}; // struct Options

// put all filenames in one struct
struct Filenames {
  std::string Zin;
  std::string Rin;
  std::string Zout;
  std::string Rout;
}; // struct Filenames

// values type to be used for samples
typedef double Tvalue;

// time series
typedef aff::Series<Tvalue> Tseries;

// full featured time series file
typedef ts::sff::File<Tseries> Tfile;

int main(int iargc, char* argv[])
{

  // define usage information
  char usage_text[]=
  {
    NOISYMIZE_VERSION "\n"
    "usage: noisymize Zin Rin Zout Rout" "\n"
thomas.forbriger's avatar
thomas.forbriger committed
85
    "                 [-v] [-type t] [-n n] [-o] [-rf] [-s e]" "\n"
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
    "   or: noisymize --help|-h" "\n"
  };

  // define full help text
  char help_text[]=
  {
    NOISYMIZE_CVSID "\n"
    "\n"
    "Zin          vertical component input data" "\n"
    "Rin          radial component input data" "\n"
    "Zout         vertical component output data" "\n"
    "Rout         radial component output data" "\n"
    "\n"
    "-v           be verbose" "\n"
    "-type t      input file type" "\n"
thomas.forbriger's avatar
thomas.forbriger committed
101
    "-n n         number of noise samples to use" "\n"
thomas.forbriger's avatar
thomas.forbriger committed
102
    "-o           overwrite output" "\n"
thomas.forbriger's avatar
thomas.forbriger committed
103
    "-rf          report factors" "\n"
thomas.forbriger's avatar
thomas.forbriger committed
104
105
    "-s e         scale seismograms with offset" "\n"
    "             the scaling factor is r**e, where r is the offset" "\n"
thomas.forbriger's avatar
thomas.forbriger committed
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
    "-fixed       do not scale each offset with a randomly" "\n"
    "             chosen amplitude" "\n"
    "\n"
    "Description of the procedure:" "\n"
    "- the program reads pairs of seismograms from Zin and Rin" "\n"
    "- each of the input files may contain multiple traces" "\n"
    "- for each trace in Zin there must be a corresponding trace" "\n"
    "  in Rin at the same offset" "\n"
    "- for each offset the program does the following:" "\n"
    "  1. the Z-trace and the R-trace are convolved with the same" "\n"
    "     stochastic time series (random normaly distributed white noise)" "\n"
    "     a new stochastic time series is calculated for each offset" "\n"
    "     through the libgsl random number generator" "\n"
    "  2. the Z-trace and the R-trace are scaled by a random value" "\n"
    "     (this function can be switched off through option -fixed)" "\n"
    "  3. the Z-trace and the R-trace are scaled by an offset" "\n"
    "     dependend value (selected through option -s e)" "\n"
    "  4. the R-trace is scaled by 2/pi to simulate a uniform" "\n"
    "     distribution of sources of all azimuths; as a consequence" "\n"
    "     the R result my be used as N- and E-component as well" "\n"
    "- the results for all offsets are stacked; the resulting Z-" "\n"
    "  and R-series are written to files Zout and Rout," "\n"
    "  respectively"
129
130
131
132
133
134
135
136
137
138
139
140
  };

  // define commandline options
  using namespace tfxx::cmdline;
  static Declare options[]= 
  {
    // 0: print help
    {"help",arg_no,"-"},
    // 1: verbose mode
    {"v",arg_no,"-"},
    // 2: input format
    {"type",arg_yes,"sff"},
thomas.forbriger's avatar
thomas.forbriger committed
141
142
    // 3: number of noise samples
    {"n",arg_yes,"1"},
thomas.forbriger's avatar
thomas.forbriger committed
143
    // 4: overwrite output file
thomas.forbriger's avatar
thomas.forbriger committed
144
    {"o",arg_no,"-"},
thomas.forbriger's avatar
thomas.forbriger committed
145
146
    // 5: report factors
    {"rf",arg_no,"-"},
thomas.forbriger's avatar
thomas.forbriger committed
147
148
    // 6: report factors
    {"s",arg_yes,"0."},
thomas.forbriger's avatar
thomas.forbriger committed
149
150
    // 7: report factors
    {"fixed",arg_no,"-"},
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
    {NULL}
  };

  // no arguments? print usage...
  if (iargc<2) 
  {
    cerr << usage_text << endl;
    exit(0);
  }

  // collect options from commandline
  Commandline cmdline(iargc, argv, options);

  // help requested? print full help text...
  if (cmdline.optset(0))
  {
    cerr << usage_text << endl;
    cerr << help_text << endl;
    exit(0);
  }

 
  /*----------------------------------------------------------------------*/
  // read command line settings

  Options opt;
  opt.verbose=cmdline.optset(1);
  opt.inputformat=cmdline.string_arg(2);
thomas.forbriger's avatar
thomas.forbriger committed
179
180
  opt.setnoiselength=cmdline.optset(3);
  opt.noiselength=cmdline.int_arg(3);
thomas.forbriger's avatar
thomas.forbriger committed
181
  opt.overwrite=cmdline.optset(4);
thomas.forbriger's avatar
thomas.forbriger committed
182
  opt.reportfactors=cmdline.optset(5);
thomas.forbriger's avatar
thomas.forbriger committed
183
  opt.offexp=cmdline.double_arg(6);
thomas.forbriger's avatar
thomas.forbriger committed
184
  opt.noscaling=cmdline.optset(7);
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251

  Filenames filename;
  TFXX_assert(cmdline.extra(), "ERROR: missing filename Zin!");
  filename.Zin=cmdline.next();
  TFXX_assert(cmdline.extra(), "ERROR: missing filename Rin!");
  filename.Rin=cmdline.next();
  TFXX_assert(cmdline.extra(), "ERROR: missing filename Zout!");
  filename.Zout=cmdline.next();
  TFXX_assert(cmdline.extra(), "ERROR: missing filename Rout!");
  filename.Rout=cmdline.next();

  /*----------------------------------------------------------------------*/
  // read vertical component input data
  if (opt.verbose)
  { cout << "read input file " << filename.Zin << endl; }
  Tfile Zindata;
  {
    std::ifstream ifs(filename.Zin.c_str());
    datread::ianystream is(ifs, datread::anyID(opt.inputformat));
    Zindata.read(is.idatstream(), opt.verbose); 
  }
  // read radial component input data
  if (opt.verbose)
  { cout << "read input file " << filename.Rin << endl; }
  Tfile Rindata;
  {
    std::ifstream ifs(filename.Rin.c_str());
    datread::ianystream is(ifs, datread::anyID(opt.inputformat));
    Rindata.read(is.idatstream(), opt.verbose); 
  }

  /*----------------------------------------------------------------------*/
  // consistency checks
  // ------------------
  //
  if (opt.verbose) { cout << "consistency checks:" << endl; }

  // check number of traces
  TFXX_assert(Zindata.size()==Rindata.size(),
              "ERROR: inconsitent number of traces");
  if (opt.verbose) 
  { cout << "input files both have " << Zindata.size() << " traces." << endl; }

  // check trace headers
  Tfile::Tbase::const_iterator Zit=Zindata.begin();
  Tfile::Tbase::const_iterator Rit=Rindata.begin();
  sff::WID2compare compare(sff::Fnsamples | sff::Fdt);
  while((Zit!=Zindata.end()) && (Rit!=Rindata.end()))
  {
    TFXX_assert(compare(Zit->header.wid2(), Rit->header.wid2()),
                "ERROR: inconsitent trace headers");
    if (Zit->header.hasinfo())
    {
      sff::INFO Zinfo=Zit->header.info();
      sff::INFO Rinfo=Rit->header.info();
      TFXX_assert(Zinfo==Rinfo,
                  "ERROR: inconsitent coordinates");
    }
    ++Zit;
    ++Rit;
  }
  if (opt.verbose) 
  { cout << "trace headers and coordinates are consistent" << endl; }

  /*----------------------------------------------------------------------*/
  // go and noisymize data
  // ---------------------
thomas.forbriger's avatar
thomas.forbriger committed
252
  //
thomas.forbriger's avatar
thomas.forbriger committed
253
254
  Zit=Zindata.begin();
  Rit=Rindata.begin();
thomas.forbriger's avatar
thomas.forbriger committed
255
256
257
  // source coordinates
  sff::SRCE Zsrce=Zindata.fileheader.srce();
  sff::SRCE Rsrce=Rindata.fileheader.srce();
thomas.forbriger's avatar
thomas.forbriger committed
258
259
  // results
  Tseries Zseries, Rseries;
thomas.forbriger's avatar
thomas.forbriger committed
260
261
  // scaling factors
  Tseries fac=ts::rnd::dugauss(Zindata.size());
thomas.forbriger's avatar
thomas.forbriger committed
262
  if (opt.noscaling) { fac=1.; }
thomas.forbriger's avatar
thomas.forbriger committed
263
264
  Tseries offfac(Zindata.size());
  Tseries traceoffset(Zindata.size());
thomas.forbriger's avatar
thomas.forbriger committed
265
  //
thomas.forbriger's avatar
thomas.forbriger committed
266
267
268
269
270
271
  if (!opt.setnoiselength)
  {
    opt.noiselength=Zit->size();
  }
  if (opt.verbose) 
  { 
thomas.forbriger's avatar
thomas.forbriger committed
272
273
    cout << "convolve " << Zit->size() 
      << " data samples (each trace) with" << endl
thomas.forbriger's avatar
thomas.forbriger committed
274
275
276
      << opt.noiselength << " samples of uniform gaussian noise" 
      << " and stack." << endl; 
  }
thomas.forbriger's avatar
thomas.forbriger committed
277
  bool initialize_result=true;
thomas.forbriger's avatar
thomas.forbriger committed
278
  unsigned int itrace=0;
thomas.forbriger's avatar
thomas.forbriger committed
279
280
  while((Zit!=Zindata.end()) && (Rit!=Rindata.end()))
  {
thomas.forbriger's avatar
thomas.forbriger committed
281
282
283
284
285
286
287
288
289
    // calculate offset and offset dependend scaling
    sff::INFO Zinfo=Zit->header.info();
    sff::INFO Rinfo=Rit->header.info();
    double Zoffset=sff::offset(Zsrce, Zinfo);
    double Roffset=sff::offset(Rsrce, Rinfo);
    double offerr=(Zoffset/Roffset)-1.;
    if (offerr < 0.) { offerr=-offerr; }
    TFXX_assert((offerr < 1.e-4), 
                "ERROR: offset of R- and Z-component are inconsistent!");
thomas.forbriger's avatar
thomas.forbriger committed
290
291
    traceoffset(itrace)=Zoffset;
    offfac(itrace)=std::pow(Zoffset, opt.offexp);
thomas.forbriger's avatar
thomas.forbriger committed
292
293
294
295
296
    // scaling factor for radial component, since we see only the projection
    // of the radial component of all sources on the respective horizonzal
    // component
    // Hfactor = (int_0^{2*pi} abs(cos(phi)) d phi) / (2 pi)
    const double Hfactor=2./M_PI;
thomas.forbriger's avatar
thomas.forbriger committed
297
    // go
thomas.forbriger's avatar
thomas.forbriger committed
298
    double scalefac=fac(itrace)*offfac(itrace);
thomas.forbriger's avatar
thomas.forbriger committed
299
    if (opt.verbose) { cout << "*"; cout.flush(); }
thomas.forbriger's avatar
thomas.forbriger committed
300
    Tseries noise=ts::rnd::dugauss(opt.noiselength);
thomas.forbriger's avatar
thomas.forbriger committed
301
    if (opt.verbose) { cout << "+"; cout.flush(); }
thomas.forbriger's avatar
thomas.forbriger committed
302
    if (initialize_result)
thomas.forbriger's avatar
thomas.forbriger committed
303
    { Zseries = scalefac*ts::convolve(*Zit, noise); }
thomas.forbriger's avatar
thomas.forbriger committed
304
    else
thomas.forbriger's avatar
thomas.forbriger committed
305
    { Zseries += scalefac*ts::convolve(*Zit, noise); }
thomas.forbriger's avatar
thomas.forbriger committed
306
    if (opt.verbose) { cout << "+"; cout.flush(); }
thomas.forbriger's avatar
thomas.forbriger committed
307
    if (initialize_result)
thomas.forbriger's avatar
thomas.forbriger committed
308
    { Rseries = Hfactor*scalefac*ts::convolve(*Rit, noise); }
thomas.forbriger's avatar
thomas.forbriger committed
309
    else
thomas.forbriger's avatar
thomas.forbriger committed
310
    { Rseries += Hfactor*scalefac*ts::convolve(*Rit, noise); }
thomas.forbriger's avatar
thomas.forbriger committed
311
    initialize_result=false;
thomas.forbriger's avatar
thomas.forbriger committed
312
313
    ++Zit;
    ++Rit;
thomas.forbriger's avatar
thomas.forbriger committed
314
    ++itrace;
thomas.forbriger's avatar
thomas.forbriger committed
315
  }
thomas.forbriger's avatar
thomas.forbriger committed
316
  if (opt.verbose) { cout << endl; }
thomas.forbriger's avatar
thomas.forbriger committed
317
318
319
  if (opt.reportfactors)
  {
    cout << "factors used for scaling:" << endl;
thomas.forbriger's avatar
thomas.forbriger committed
320
321
322
323
324
325
326
327
    cout.width(5);
    cout << "#";
    cout.width(12);
    cout << "f1";
    cout.width(12);
    cout << "f2";
    cout.width(14);
    cout << "offset" << endl;
thomas.forbriger's avatar
thomas.forbriger committed
328
329
    for (itrace=0; itrace<Zindata.size(); itrace++)
    {
thomas.forbriger's avatar
thomas.forbriger committed
330
331
332
333
334
335
336
337
338
      cout.width(5); cout.precision(3);
      cout << itrace;
      cout.width(12); cout.precision(4);
      cout << fac(itrace);
      cout.width(12); cout.precision(4);
      cout << offfac(itrace);
      cout.width(12); cout.precision(4);
      cout << traceoffset(itrace)*1.e-3 << "km";
      cout << endl;
thomas.forbriger's avatar
thomas.forbriger committed
339
    }
thomas.forbriger's avatar
thomas.forbriger committed
340
    cout << "traces are scale by f1*f2" << endl;
thomas.forbriger's avatar
thomas.forbriger committed
341
  }
thomas.forbriger's avatar
thomas.forbriger committed
342
343
344

  /*----------------------------------------------------------------------*/
  // write result
thomas.forbriger's avatar
thomas.forbriger committed
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
  if (opt.verbose) 
  { cout << "prepare output data" << endl; }
  typedef ts::sff::SFFTimeSeries<Tseries> Tsffseries;
  Tsffseries Zoutdata(Zseries), Routdata(Rseries);
  Tsffseries::Theader Zheader(Zindata[0].header);
  Tsffseries::Theader Rheader(Rindata[0].header);

  sff::WID2 wid2line=Zheader.wid2();
  wid2line.nsamples=Zoutdata.size();
  wid2line.channel="Z";
  Zheader.wid2(wid2line);
  Zoutdata.header=Zheader;

  wid2line=Rheader.wid2();
  wid2line.nsamples=Routdata.size();
  wid2line.channel="R";
  Rheader.wid2(wid2line);
  Routdata.header=Rheader;

  {
    if (opt.verbose) { cout << "open output file " << filename.Zout << endl; }
    // check if output file exists and open
    if (!opt.overwrite)
    {
      std::ifstream file(filename.Zout.c_str(),std::ios_base::in);
      TFXX_assert((!file.good()),"ERROR: output file exists!");
    }
    std::ofstream ofs(filename.Zout.c_str());
    sff::SFFostream<Tseries> os(ofs);
374

thomas.forbriger's avatar
thomas.forbriger committed
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
    // prepare file FREE block
    sff::FREE filefree;
    filefree.append(NOISYMIZE_VERSION);

    os << Zoutdata;
  }

  {
    if (opt.verbose) { cout << "open output file " << filename.Rout << endl; }
    // check if output file exists and open
    if (!opt.overwrite)
    {
      std::ifstream file(filename.Rout.c_str(),std::ios_base::in);
      TFXX_assert((!file.good()),"ERROR: output file exists!");
    }
    std::ofstream ofs(filename.Rout.c_str());
    sff::SFFostream<Tseries> os(ofs);

    // prepare file FREE block
    sff::FREE filefree;
    filefree.append(NOISYMIZE_VERSION);

    os << Routdata;
  }
399
400
401
}

/* ----- END OF noisymize.cc ----- */