CompositeFunction.cpp 20 KB
Newer Older
1
2
3
4
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidKernel/Exception.h"
5
6
#include "MantidAPI/CompositeFunction.h"
#include "MantidAPI/ParameterTie.h"
7

8
#include <boost/lexical_cast.hpp>
9
10
11
12
13
14
15
16
17
#include <boost/shared_array.hpp>
#include <sstream>
#include <iostream>

namespace Mantid
{
namespace API
{

18
19
DECLARE_FUNCTION(CompositeFunction)

20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/// Copy contructor
CompositeFunction::CompositeFunction(const CompositeFunction& f)
:m_nActive(f.m_nParams),m_nParams(f.m_nParams)
{
  m_functions.assign(f.m_functions.begin(),f.m_functions.end());
  m_activeOffsets.assign(f.m_activeOffsets.begin(),f.m_activeOffsets.end());
  m_paramOffsets.assign(f.m_paramOffsets.begin(),f.m_paramOffsets.end());
}

///Assignment operator
CompositeFunction& CompositeFunction::operator=(const CompositeFunction& f)
{
  m_nActive = f.m_nActive;
  m_nParams = f.m_nParams;
  m_functions.assign(f.m_functions.begin(),f.m_functions.end());
  m_activeOffsets.assign(f.m_activeOffsets.begin(),f.m_activeOffsets.end());
  m_paramOffsets.assign(f.m_paramOffsets.begin(),f.m_paramOffsets.end());
  return *this;
}

///Destructor
CompositeFunction::~CompositeFunction()
{
  for(int i=0;i<nFunctions();i++)
    if (m_functions[i]) delete m_functions[i];
}


/// Function initialization. Declare function parameters in this method.
void CompositeFunction::init()
{
}

53
54
55
56
57
58
59
60
61
62
63
/// Writes itself into a string
std::string CompositeFunction::asString()const
{
  std::ostringstream ostr;
  for(int i=0;i<nFunctions();i++)
  {
    ostr << getFunction(i)->asString() << ';';
  }
  return ostr.str();
}

64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
/// Function you want to fit to.
void CompositeFunction::function(double* out, const double* xValues, const int& nData)
{
  if (nData <= 0) return;
  boost::shared_array<double> tmpOut(new double[nData]);
  for(int i=0;i<nFunctions();i++)
  {
    if (i == 0)
      m_functions[i]->function(out,xValues,nData);
    else
    {
      m_functions[i]->function(tmpOut.get(),xValues,nData);
      std::transform(out,out+nData,tmpOut.get(),out,std::plus<double>());
    }
  }
}

81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
/// Function with constraint you want to fit to.
void CompositeFunction::functionWithConstraint(double* out, const double* xValues, const int& nData)
{
  if (nData <= 0) return;
  boost::shared_array<double> tmpOut(new double[nData]);
  for(int i=0;i<nFunctions();i++)
  {
    if (i == 0)
      m_functions[i]->functionWithConstraint(out,xValues,nData);
    else
    {
      m_functions[i]->functionWithConstraint(tmpOut.get(),xValues,nData);
      std::transform(out,out+nData,tmpOut.get(),out,std::plus<double>());
    }
  }
}


99
100
101
102
/** A Jacobian for individual functions
 */
class PartialJacobian: public Jacobian
{
103
  Jacobian* m_J;  ///< pointer to the overall Jacobian
104
  int m_iP0;      ///< offset in the overall Jacobian for a particular function
105
  int m_iaP0;      ///< offset in the active Jacobian for a particular function
106
107
108
public:
  /** Constructor
   * @param J A pointer to the overall Jacobian
109
   * @param iP0 The parameter index (declared) offset for a particular function
110
   * @param iap0 The active parameter index (declared) offset for a particular function
111
   */
112
  PartialJacobian(Jacobian* J,int iP0, int iap0):m_J(J),m_iP0(iP0),m_iaP0(iap0)
113
  {}
114
115
116
117
  /**
   * Overridden Jacobian::set(...).
   * @param iY The index of the data point
   * @param iP The parameter index of an individual function.
118
   * @param value The derivative value
119
120
121
   */
  void set(int iY, int iP, double value)
  {
122
      m_J->set(iY,m_iP0 + iP,value);
123
  }
124
125
126
127
128
129
130
131
 /**  Add number to all iY (data) Jacobian elements for a given iP (parameter)
  *   @param value Value to add
  *   @param iActiveP The index of an active parameter.
  */
  virtual void addNumberToColumn(const double& value, const int& iActiveP) 
  {
    m_J->addNumberToColumn(value,m_iaP0+iActiveP);
  }
132
133
134
135
};

/// Derivatives of function with respect to active parameters
void CompositeFunction::functionDeriv(Jacobian* out, const double* xValues, const int& nData)
136
{
137
138
  for(int i=0;i<nFunctions();i++)
  {
139
    PartialJacobian J(out,m_paramOffsets[i],m_activeOffsets[i]);
140
141
142
143
    m_functions[i]->functionDeriv(&J,xValues,nData);
  }
}

144
145
/// Derivatives of function with respect to active parameters
void CompositeFunction::functionDerivWithConstraint(Jacobian* out, const double* xValues, const int& nData)
146
{
147
148
  for(int i=0;i<nFunctions();i++)
  {
149
    PartialJacobian J(out,m_paramOffsets[i],m_activeOffsets[i]);
150
151
152
153
    m_functions[i]->functionDerivWithConstraint(&J,xValues,nData);
  }
}

154
155
156
157
158
159
/// Derivatives to be used in covariance matrix calculation. 
void CompositeFunction::calJacobianForCovariance(Jacobian* out, const double* xValues, const int& nData)
{
  if (nData <= 0) return;
  for(int i=0;i<nFunctions();i++)
  {
160
    PartialJacobian J(out,m_paramOffsets[i],m_activeOffsets[i]);
161
162
163
164
165
166
167
168
    m_functions[i]->calJacobianForCovariance(&J,xValues,nData);
  }
}


/// Address of i-th parameter
double& CompositeFunction::parameter(int i)
{
169
170
  int iFun = functionIndex(i);
  return m_functions[ iFun ]->parameter(i - m_paramOffsets[iFun]);
171
172
173
174
175
}

/// Address of i-th parameter
double CompositeFunction::parameter(int i)const
{
176
177
  int iFun = functionIndex(i);
  return m_functions[ iFun ]->parameter(i - m_paramOffsets[iFun]);
178
179
180
181
182
}

/// Get parameter by name.
double& CompositeFunction::getParameter(const std::string& name)
{
183
184
185
186
187
188
189
190
191
  std::string pname;
  int index;
  parseName(name,index,pname);
  if (index < 0)
    throw std::invalid_argument("CompositeFunction::getParameter: parameter name must contain function index");
  else
  {   
    return getFunction(index)->getParameter(pname);
  }
192
193
194
195
196
}

/// Get parameter by name.
double CompositeFunction::getParameter(const std::string& name)const
{
197
198
199
200
201
202
203
204
205
  std::string pname;
  int index;
  parseName(name,index,pname);
  if (index < 0)
    throw std::invalid_argument("CompositeFunction::getParameter: parameter name must contain function index");
  else
  {   
    return getFunction(index)->getParameter(pname);
  }
206
207
208
209
210
211
212
213
}

/// Total number of parameters
int CompositeFunction::nParams()const
{
  return m_nParams;
}

214
/**
215
 * 
216
217
218
219
220
221
222
223
224
225
226
227
228
 * @param name The name of a parameter
 */
int CompositeFunction::parameterIndex(const std::string& name)const
{
  std::string pname;
  int index;
  parseName(name,index,pname);
  if (index < 0)
    throw std::invalid_argument("CompositeFunction::getParameter: parameter name must contain function index");

  return m_paramOffsets[index] + getFunction(index)->parameterIndex(pname);
}

229
230
231
/**
 * Checks that a pointer points to a parameter of this function and returns its index.
 * @param p A pointer to a double variable.
232
 * @return The index of the parameter or -1 if p is not a pointer to any of the function's parameters.
233
234
235
236
237
238
239
240
241
242
243
244
245
246
 */
int CompositeFunction::parameterIndex(const double* p)const
{
  for(int iFun=0;iFun<nFunctions();iFun++)
  {
    int i = m_functions[iFun]->parameterIndex(p);
    if (i >= 0)
    {
      return m_paramOffsets[iFun] + i;
    }
  }
  return -1;
}

247
248
249
/// Returns the name of parameter i
std::string CompositeFunction::parameterName(int i)const
{
250
  int iFun = functionIndex(i);
251
252
253
  std::ostringstream ostr;
  ostr << 'f' << iFun << '.' << m_functions[ iFun ]->parameterName(i - m_paramOffsets[iFun]);
  return ostr.str();
254
255
256
257
258
259
260
261
262
263
264
}

/// Number of active (in terms of fitting) parameters
int CompositeFunction::nActive()const
{
  return m_nActive;
}

/// Value of i-th active parameter. Override this method to make fitted parameters different from the declared
double CompositeFunction::activeParameter(int i)const
{
265
  int iFun = functionIndexActive(i);
266
267
268
269
270
271
  return m_functions[ iFun ]->activeParameter(i - m_activeOffsets[iFun]);
}

/// Set new value of i-th active parameter. Override this method to make fitted parameters different from the declared
void CompositeFunction::setActiveParameter(int i, double value)
{
272
  int iFun = functionIndexActive(i);
273
274
275
276
277
278
279
280
281
282
  return m_functions[ iFun ]->setActiveParameter(i - m_activeOffsets[iFun],value);
}

/// Update parameters after a fitting iteration
void CompositeFunction::updateActive(const double* in)
{
  for(int iFun = 0; iFun < int(m_functions.size()); iFun++)
  {
    m_functions[ iFun ]->updateActive(in + m_activeOffsets[ iFun ]);
  }
283
  applyTies();
284
285
286
287
288
}

/// Returns "global" index of active parameter i
int CompositeFunction::indexOfActive(int i)const
{
289
  int iFun = functionIndexActive(i);
290
291
292
293
294
295
  return m_paramOffsets[ iFun ] + m_functions[ iFun ]->indexOfActive(i - m_activeOffsets[iFun]);
}

/// Returns the name of active parameter i
std::string CompositeFunction::nameOfActive(int i)const
{
296
  int iFun = functionIndexActive(i);
297
298
299
  std::ostringstream ostr;
  ostr << 'f' << iFun << '.' << m_functions[ iFun ]->nameOfActive(i - m_activeOffsets[iFun]);
  return ostr.str();
300
301
}

302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
/**
 * Returns true if parameter i is active
 * @param i The index of a declared parameter
 */
bool CompositeFunction::isActive(int i)const
{
  int iFun = functionIndex(i);
  return m_functions[ iFun ]->isActive(i - m_paramOffsets[iFun]);
}

/**
 * @param i A declared parameter index to be removed from active
 */
void CompositeFunction::removeActive(int i)
{
  int iFun = functionIndex(i);
  int ia = m_activeOffsets[iFun] + m_functions[iFun]->activeIndex(i - m_paramOffsets[iFun]);
  m_iFunctionActive.erase(m_iFunctionActive.begin()+ia);
  m_functions[ iFun ]->removeActive(i - m_paramOffsets[iFun]);

322
  m_nActive--;
323
324
325
326
  for(int j=iFun+1;j<nFunctions();j++)
    m_activeOffsets[j] -= 1;
}

327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/** Makes a parameter active again. It doesn't change the parameter's tie.
 * @param i A declared parameter index to be restored to active
 */
void CompositeFunction::restoreActive(int i)
{
  int iFun = functionIndex(i);
  int ia = m_activeOffsets[iFun] + m_functions[iFun]->activeIndex(i - m_paramOffsets[iFun]);

  std::vector<int>::iterator itFun = 
    std::find_if(m_iFunctionActive.begin(),m_iFunctionActive.end(),std::bind2nd(std::greater<int>(),i));

  m_iFunctionActive.insert(itFun,1,ia);
  m_functions[ iFun ]->restoreActive(i - m_paramOffsets[iFun]);

  m_nActive++;
  for(int j=iFun+1;j<nFunctions();j++)
    m_activeOffsets[j] += 1;
}

346
347
348
349
350
351
352
353
/**
 * @param i The index of a declared parameter
 * @return The index of declared parameter i in the list of active parameters or -1
 *         if the parameter is tied.
 */
int CompositeFunction::activeIndex(int i)const
{
  int iFun = functionIndex(i);
354
355
356
357
358
359
360
361
  int j = m_functions[iFun]->activeIndex(i - m_paramOffsets[iFun]);

  if (j == -1) 
  {
    return -1;
  }

  return m_activeOffsets[iFun] + j;
362
363
}

364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
/** Makes sure that the function is consistent. 
 */
void CompositeFunction::checkFunction()
{
  m_nParams = 0;
  m_nActive = 0;
  m_paramOffsets.clear();
  m_activeOffsets.clear();
  m_iFunction.clear();
  m_iFunctionActive.clear();

  std::vector<IFunction*> functions(m_functions.begin(),m_functions.end());
  m_functions.clear();

  for(int i=0;i<functions.size();i++)
  {
    IFunction* f = functions[i];
    addFunction(f);
  }
}

385
386
/** Add a function
 * @param f A pointer to the added function
387
 * @return The function index
388
 */
389
int CompositeFunction::addFunction(IFunction* f)
390
391
{
  m_iFunction.insert(m_iFunction.end(),f->nParams(),m_functions.size());
392
  m_iFunctionActive.insert(m_iFunctionActive.end(),f->nActive(),m_functions.size());
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
  m_functions.push_back(f);
  //?f->init();
  if (m_paramOffsets.size() == 0)
  {
    m_paramOffsets.push_back(0);
    m_activeOffsets.push_back(0);
    m_nParams = f->nParams();
    m_nActive = f->nActive();
  }
  else
  {
    m_paramOffsets.push_back(m_nParams);
    m_activeOffsets.push_back(m_nActive);
    m_nParams += f->nParams();
    m_nActive += f->nActive();
  }
409
  return m_functions.size()-1;
410
411
}

412
413
/** Remove a function
 * @param i The index of the function to remove
414
 * @param del The deletion flag. If true the function will be deleted otherwise - simply detached
415
 */
416
void CompositeFunction::removeFunction(int i, bool del)
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
{
  if ( i >= nFunctions() )
    throw std::out_of_range("Function index out of range.");

  IFunction* fun = getFunction(i);

  int dna = fun->nActive();
  int dnp = fun->nParams();

  // Delete the ties that point to the function being removed
  std::vector<const double*> pars;
  for(int j=0;j<fun->nParams();j++)
  {
    pars.push_back(&fun->parameter(j));
  }

  for(int j=0;j<nParams();)
  {
    ParameterTie* tie = getTie(j);
    if (tie && tie->findParameters(pars))
    {
      removeTie(j);
    }
    else
    {
      j++;
    }
  }

  // Shift down the function indeces for parameters
447
  for(std::vector<int>::iterator it=m_iFunction.begin();it!=m_iFunction.end();)
448
  {
449

450
451
452
453
    if (*it == i)
    {
      it = m_iFunction.erase(it);
    }
454
    else
455
    {
456
457
458
459
460
      if (*it > i)
      {
        *it -= 1;
      }
      it++;
461
462
463
464
    }
  }

  // Shift down the function indeces for active parameters
465
  for(std::vector<int>::iterator it=m_iFunctionActive.begin();it!=m_iFunctionActive.end();)
466
467
468
469
470
  {
    if (*it == i)
    {
      it = m_iFunctionActive.erase(it);
    }
471
    else
472
    {
473
474
475
476
477
      if (*it > i)
      {
        *it -= 1;
      }
      it++;
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
    }
  }

  m_nActive -= dna;
  // Shift the active offsets down by the number of i-th function's active params
  for(int j=i+1;j<nFunctions();j++)
  {
    m_activeOffsets[j] -= dna;
  }
  m_activeOffsets.erase(m_activeOffsets.begin()+i);

  m_nParams -= dnp;
  // Shift the parameter offsets down by the total number of i-th function's params
  for(int j=i+1;j<nFunctions();j++)
  {
    m_paramOffsets[j] -= dnp;
  }
  m_paramOffsets.erase(m_paramOffsets.begin()+i);

  m_functions.erase(m_functions.begin()+i);
498
499
500
501
  if (del)
  {
    delete fun;
  }
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
}

/** Replace a function with a new one. The old function is deleted.
 * @param i The index of the function to replace
 * @param f A pointer to the new function
 */
void CompositeFunction::replaceFunction(int i,IFunction* f)
{
  if ( i >= nFunctions() )
    throw std::out_of_range("Function index out of range.");

  IFunction* fun = getFunction(i);
  int na_old = fun->nActive();
  int np_old = fun->nParams();

  int na_new = f->nActive();
  int np_new = f->nParams();

  // Modify function indeces: The new function may have different number of parameters
  {
    std::vector<int>::iterator itFun = std::find(m_iFunction.begin(),m_iFunction.end(),i);
523
    if(itFun != m_iFunction.end()) // functions must have at least 1 parameter
524
    {
525
526
527
528
529
530
531
532
      if (np_old > np_new)
      {
        m_iFunction.erase(itFun,itFun + np_old - np_new);
      }
      else if (np_old < np_new) 
      {
        m_iFunction.insert(itFun,np_new - np_old,i);
      }
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
    }
  }

  // Modify function indeces: The new function may have different number of active parameters
  {
    std::vector<int>::iterator itFun = std::find(m_iFunctionActive.begin(),m_iFunctionActive.end(),i);
    if (itFun != m_iFunctionActive.end())
    {
      if (na_old > na_new)
      {
        m_iFunctionActive.erase(itFun,itFun + na_old - na_new);
      }
      else if (na_old < na_new) 
      {
        m_iFunctionActive.insert(itFun,na_new - na_old,i);
      }
    }
    else if (na_new > 0)
    {
      itFun = std::find_if(m_iFunctionActive.begin(),m_iFunctionActive.end(),std::bind2nd(std::greater<int>(),i));
      m_iFunctionActive.insert(itFun,na_new,i);
    }
  }

  int dna = na_new - na_old;
  m_nActive += dna;
  // Recalc the active offsets 
  for(int j=i+1;j<nFunctions();j++)
  {
    m_activeOffsets[j] += dna;
  }

  int dnp = np_new - np_old;
  m_nParams += dnp;
  // Shift the parameter offsets down by the total number of i-th function's params
  for(int j=i+1;j<nFunctions();j++)
  {
    m_paramOffsets[j] += dnp;
  }

  m_functions[i] = f;
  delete fun;
}

577
578
579
580
/**
 * @param i The index of the function
 */
IFunction* CompositeFunction::getFunction(int i)const
581
582
583
584
585
586
587
{
  if ( i >= nFunctions() )
    throw std::out_of_range("Function index out of range.");

  return m_functions[i];
}

588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
/**
 * Get the index of the function to which parameter i belongs
 * @param i The parameter index
 */
int CompositeFunction::functionIndex(int i)const
{
  if (i >= nParams())
    throw std::out_of_range("Function parameter index out of range.");
  return m_iFunction[i];
}

/**
 * Get the index of the function to which parameter i belongs
 * @param i The active parameter index
 */
int CompositeFunction::functionIndexActive(int i)const
{
  if (i >= nParams())
    throw std::out_of_range("Function parameter index out of range.");
  return m_iFunctionActive[i];
}

/**
* @param varName The variable name which may contain function index ( [f<index.>]name )
* @param index Receives function index or -1 
* @param name Receives the parameter name
*/
void CompositeFunction::parseName(const std::string& varName,int& index, std::string& name)
{
  size_t i = varName.find('.');
  if (i == std::string::npos)
  {
    name = varName;
    index = -1;
    return;
  }
  else
  {
    if (varName[0] != 'f')
      throw std::invalid_argument("External function parameter name must start with 'f'");

    std::string sindex = varName.substr(1,i-1);
    index = boost::lexical_cast<int>(sindex);

    if (i == varName.size() - 1)
      throw std::invalid_argument("Name cannot be empty");

    name = varName.substr(i+1);
  }
}

639
640
641
642
643
644
645
646
647
648
/** Returns the name of parameter i as it declared in its function
 * @param i The parameter index
 * @return The pure parameter name (without the function identifier f#.)
 */
std::string CompositeFunction::parameterLocalName(int i)const
{
  int iFun = functionIndex(i);
  return m_functions[ iFun ]->parameterName(i - m_paramOffsets[iFun]);
}

649
650
651
652
653
654
/** Initialize the function providing it the workspace
 * @param workspace The shared pointer to a workspace to which the function will be fitted
 * @param spec The number of a spectrum for fitting
 * @param xMin The minimum bin index of spectrum spec that will be used in fitting
 * @param xMax The maximum bin index of spectrum spec that will be used in fitting
 */
655
void CompositeFunction::setWorkspace(boost::shared_ptr<const API::MatrixWorkspace> workspace,int spec,int xMin,int xMax)
656
{
657
  IFunction::setWorkspace(workspace,spec,xMin,xMax);
658
  for(int i=0;i<nFunctions();i++)
659
    getFunction(i)->setWorkspace(workspace,spec,xMin,xMax);
660
661
}

662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
/**
 * Apply the ties. First the ties of the individual functions are applied, then the common ties (inter-function)
 */
void CompositeFunction::applyTies()
{
  for(int i=0;i<nFunctions();i++)
  {
    getFunction(i)->applyTies();
  }
}

/**
 * Clear the ties. 
 */
void CompositeFunction::clearTies()
{
  for(int i=0;i<nFunctions();i++)
  {
    getFunction(i)->clearTies();
  }
}

/** Removes i-th parameter's tie if it is tied or does nothing.
 * @param i The index of the tied parameter.
 * @return True if successfull
 */
bool CompositeFunction::removeTie(int i)
{
  int iFun = functionIndex(i);
  bool res = m_functions[ iFun ]->removeTie(i - m_paramOffsets[iFun]);
  if (res)
  {
    m_nActive++;
  }
  return res;
}

/** Get the tie of i-th parameter
700
701
 * @param i The parameter index
 * @return A pointer to the tie.
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
 */
ParameterTie* CompositeFunction::getTie(int i)const
{
  int iFun = functionIndex(i);
  return m_functions[ iFun ]->getTie(i - m_paramOffsets[iFun]);
}

/**
 * Attaches a tie to this function. The attached tie is owned by the function.
 * @param tie A pointer to a new tie
 */
void CompositeFunction::addTie(ParameterTie* tie)
{
  int i = parameterIndex(tie->parameter());
  if (i < 0)
  {
    throw std::logic_error("Trying to use a tie on a parameter not belonging to this function");
  }
  int iFun = functionIndex(i);
  m_functions[iFun]->addTie(tie);
}

/**
 * Declare a new parameter. To used in the implementation'c constructor.
 * @param name The parameter name.
 * @param initValue The initial value for the parameter
 */
void CompositeFunction::declareParameter(const std::string& name,double initValue )
{
  throw Kernel::Exception::NotImplementedError("CompositeFunction cannot not have its own parameters.");
}

/** Add a constraint
 *  @param ic Pointer to a constraint.
 */
void CompositeFunction::addConstraint(IConstraint* ic)
{
  throw Kernel::Exception::NotImplementedError("addConstraint is not implemented for CompositeFunction yet.");
}

742
743
744
745
746
747
748
749
void CompositeFunction::setParametersToSatisfyConstraints()
{
  for(int i=0;i<nFunctions();i++)
  {
    getFunction(i)->setParametersToSatisfyConstraints();
  }
}

750

751
752
} // namespace API
} // namespace Mantid