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trunk/esys2/escript/src/Data/DataTagged.h revision 102 by jgs, Wed Dec 15 07:08:39 2004 UTC trunk/escript/src/DataTagged.h revision 983 by gross, Tue Feb 20 02:49:08 2007 UTC
# Line 1  Line 1 
1  // $Id$  // $Id$
2  /*  
3   ******************************************************************************  /*
4   *                                                                            *   ************************************************************
5   *       COPYRIGHT  ACcESS 2004 -  All Rights Reserved                        *   *          Copyright 2006 by ACcESS MNRF                   *
6   *                                                                            *   *                                                          *
7   * This software is the property of ACcESS. No part of this code              *   *              http://www.access.edu.au                    *
8   * may be copied in any form or by any means without the expressed written    *   *       Primary Business: Queensland, Australia            *
9   * consent of ACcESS.  Copying, use or modification of this software          *   *  Licensed under the Open Software License version 3.0    *
10   * by any unauthorised person is illegal unless that person has a software    *   *     http://www.opensource.org/licenses/osl-3.0.php       *
11   * license agreement with ACcESS.                                             *   *                                                          *
12   *                                                                            *   ************************************************************
  ******************************************************************************  
13  */  */
14                                                                              
15  #if !defined escript_DataTagged_20040615_H  #if !defined escript_DataTagged_20040615_H
16  #define escript_DataTagged_20040615_H  #define escript_DataTagged_20040615_H
17    #include "system_dep.h"
18    
19  #include "escript/Data/DataAbstract.h"  #include "DataAbstract.h"
20  #include "escript/Data/DataArray.h"  #include "DataArrayView.h"
 #include "escript/Data/DataArrayView.h"  
21    
22  #include <vector>  #include <vector>
23  #include <map>  #include <map>
# Line 29  class DataConstant; Line 28  class DataConstant;
28    
29  /**  /**
30     \brief     \brief
31     Creates the illusion of a full dataset accessible via sampleNo and dataPointNo.     Simulates a full dataset accessible via sampleNo and dataPointNo.
32    
33     Description:     Description:
34     Creates the illusion of a full dataset accessible via sampleNo and     Each data-point has an associated tag number, and a given tag can represent a
35     dataPointNo. In reality a much smaller number of data-points is stored.     range of dataPointNo and sampleNo. Each tag indexes only a single data-point.
    Each data-point has an associated key, thus a given key represents a specific  
    range of dataPointNo and sampleNo. Each key indexes a single data-point.  
36     Thus only a single data-point needs to be stored for a range of sampleNo and     Thus only a single data-point needs to be stored for a range of sampleNo and
37     dataPointNo values.     dataPointNo values.
38  */  */
# Line 44  class DataTagged : public DataAbstract { Line 41  class DataTagged : public DataAbstract {
41    
42   public:   public:
43    
44    typedef std::vector<int> TagListType;    //
45      // Types for the lists of tags and values.
46      typedef std::vector<int>           TagListType;
47    typedef std::vector<DataArrayView> ValueListType;    typedef std::vector<DataArrayView> ValueListType;
48      typedef DataArrayView::ValueType   ValueType;
49    
50    //    //
51    // Map type, maps the key to an array offset.    // Map from a tag to an offset into the data array.
52    typedef std::map<int, int> DataMapType;    typedef std::map<int, int> DataMapType;
53    
54    /**    /**
# Line 57  class DataTagged : public DataAbstract { Line 57  class DataTagged : public DataAbstract {
57    
58       Description:       Description:
59       Default constructor for DataTagged. Creates a DataTagged object for which       Default constructor for DataTagged. Creates a DataTagged object for which
60       the default data-point is a scalar data-point with value 0.0. Any given tag       the default data-point is a scalar data-point with value 0.0, and no other
61       will map to this data-point.       tag values are stored.
62        T
63    */    */
64      ESCRIPT_DLL_API
65    DataTagged();    DataTagged();
66    
67    /**    /**
# Line 68  class DataTagged : public DataAbstract { Line 70  class DataTagged : public DataAbstract {
70    
71       Description:       Description:
72       Constructor for DataTagged.       Constructor for DataTagged.
73       \param tagKeys - Input - A vector of integer keys.       \param tagKeys - Input - A vector of integer tags.
74       \param values - Input - A vector of DataArrayViews. If this is empty       \param values - Input - A vector of DataArrayViews. If this is empty
75                     all tag values will be assigned a value of zero. If                       all tag values will be assigned a scalar data-point of value
76                     it contains one value all tag values will be assigned the                       0. If it contains one value all tag values will be assigned
77             same value. Otherwise if there is a mismatch between               this value. Otherwise consecutive tags will be assigned
78             the number of keys and the number of values an exception                       consecutive values.  If there is a mismatch between  the
79             will be generated.               number of keys and the number of values an exception
80                 will be generated.
81       \param defaultValue - Input - Value returned if a requested tag doesn't exist.       \param defaultValue - Input - Value returned if a requested tag doesn't exist.
82       \param what - Input - A description of what this data represents.       \param what - Input - A description of what this data represents.
83        T
84    */    */
85      ESCRIPT_DLL_API
86    DataTagged(const TagListType& tagKeys,    DataTagged(const TagListType& tagKeys,
87               const ValueListType& values,               const ValueListType& values,
88           const DataArrayView& defaultValue,           const DataArrayView& defaultValue,
# Line 85  class DataTagged : public DataAbstract { Line 90  class DataTagged : public DataAbstract {
90    
91    /**    /**
92       \brief       \brief
93       Slice constructor for DataTagged.       Alternative Constructor for DataTagged.
94    
95       Description:       Description:
96       Slice constructor for DataTagged.       Alternative Constructor for DataTagged.
97       Copies a slice from another DataTagged object.       \param what - Input - A description of what this data object represents.
98       \param other - Input - DataTagged object to copy from.       \param shape - Input - The shape of each data-point.
99       \param region - Input - region to copy.       \param tags - Input - An array of tags, one for each sample number.
100         \param data - The data values for each tag.
101        NB: no unit testing yet
102    */    */
103    DataTagged(const DataTagged& other,    ESCRIPT_DLL_API
104           const DataArrayView::RegionType& region);    DataTagged(const FunctionSpace& what,
105                 const DataArrayView::ShapeType &shape,
106                 const int tags[],
107                 const ValueType& data);
108    
109    /**    /**
110       \brief       \brief
111       Copy constructorfor DataTagged.       Alternative Constructor for DataTagged.
112    
113         Description:
114         Alternative Constructor for DataTagged.
115         \param what - Input - A description of what this data object represents.
116         \param shape - Input - The shape of each data-point.
117         \param tags - Input - An vector of tags, one for each sample number.
118         \param data - The data values for each tag.
119        NB: no unit testing yet
120      */
121      ESCRIPT_DLL_API
122      DataTagged(const FunctionSpace& what,
123                 const DataArrayView::ShapeType &shape,
124                 const TagListType& tags,
125                 const ValueType& data);
126    
127      /**
128         \brief
129         Copy Constructor for DataTagged.
130       Performs a deep copy from the given DataTagged object.       Performs a deep copy from the given DataTagged object.
131        T
132    */    */
133      ESCRIPT_DLL_API
134    DataTagged(const DataTagged& other);    DataTagged(const DataTagged& other);
135    
136    /**    /**
137       \brief       \brief
138       Construct a tagged data from a DataConstant object.       Copy Constructor for DataTagged.
139       The default data-point will be that held by the DataConstant object.       Construct a DataTagged object from a DataConstant object.
140         The default value will be the value of the DataConstant object.
141        T
142    */    */
143      ESCRIPT_DLL_API
144    DataTagged(const DataConstant& other);    DataTagged(const DataConstant& other);
145    
146    /**    /**
# Line 115  class DataTagged : public DataAbstract { Line 148  class DataTagged : public DataAbstract {
148       getSampleDataByTag       getSampleDataByTag
149    
150       Description:       Description:
151       Return the data-point for the given tag. All of the data for the entire       Return the data-point for the given tag. All of the data for the
152       sample should be visable via the returned pointer. This provides an       sample will be visible via the returned pointer.
153       interface into the data suitable for legacy C code.  
154         ** This provides an interface into the data suitable for legacy C code.
155         ** NB: need to do array bounds checking when accessing returned value!
156        T
157    */    */
158      ESCRIPT_DLL_API
159    virtual    virtual
160    double*    double*
161    getSampleDataByTag(int tag);    getSampleDataByTag(int tag);
# Line 128  class DataTagged : public DataAbstract { Line 165  class DataTagged : public DataAbstract {
165       Write the data as a string.       Write the data as a string.
166       Writes out each tag, including the default, and the data-point which is       Writes out each tag, including the default, and the data-point which is
167       associated with each tag.       associated with each tag.
168        T
169    */    */
170      ESCRIPT_DLL_API
171    virtual    virtual
172    std::string    std::string
173    toString() const;    toString() const;
174     /**
175         \brief
176         dumps the object into a netCDF file
177      */
178      ESCRIPT_DLL_API
179      virtual
180      void
181      dump(const std::string fileName) const;
182    
183      /**
184         \brief
185         Return the tag number associated with the given data-point number
186         according to the associated function space.
187        T
188      */
189      ESCRIPT_DLL_API
190      virtual
191      int
192      getTagNumber(int dpno);
193    
194    /**    /**
195       \brief       \brief
196       getPointOffset       getPointOffset
197    
198       Description:       Description:
199       Return the offset to the given data-point. This is somewhat artificial,       Return the offset to the given data-point value in the underlying
200       but returns the offset for the given point in the DataTagged object.       data vector.
      Only really necessary to avoid many DataArrayView objects.  
201    
202       \param sampleNo - Input - sample number.       \param sampleNo - Input - sample number.
203       \param dataPointNo - Input - data-point number.       \param dataPointNo - Input - data-point number.
204     */      T
205      */
206      ESCRIPT_DLL_API
207    virtual    virtual
208    DataArrayView::ValueType::size_type    ValueType::size_type
209    getPointOffset(int sampleNo,    getPointOffset(int sampleNo,
210                   int dataPointNo) const;                   int dataPointNo) const;
211    
# Line 155  class DataTagged : public DataAbstract { Line 214  class DataTagged : public DataAbstract {
214       addTaggedValues       addTaggedValues
215    
216       Description:       Description:
217       Add the given tags and values to this DataTagged object.       Add the given tags and values to this DataTagged object.
218       \param tagKeys - Input - A vector of integer keys.       \param tagKeys - Input - A vector of integer tags.
219       \param values - Input - A vector of DataArrayViews. If this is empty       \param values - Input - A vector of DataArrayViews. If this is empty
220                     then all given tags will be assigned a value of zero. If                       all tag values will be assigned a scalar data-point of value
221                     it contains one value all tags will be assigned the same value.                       0. If it contains one value all tag values will be assigned
222                     Otherwise if there is a mismatch between the number of tags and               this value. Otherwise consecutive tags will be assigned
223                     the number of values an exception will be generated.                       consecutive values.  If there is a mismatch between  the
224       NB: If a tag given here already exists in this object, this attempt to add the given               number of keys and the number of values an exception
225       value will have no effect. setTaggedValues is more versatile and should be               will be generated.
226       used in most cases in preference to addTaggedValues.      T
227    */    */
228      ESCRIPT_DLL_API
229    void    void
230    addTaggedValues(const TagListType& tagKeys,    addTaggedValues(const TagListType& tagKeys,
231                    const ValueListType& values);                      const ValueListType& values);  
# Line 175  class DataTagged : public DataAbstract { Line 235  class DataTagged : public DataAbstract {
235       addTaggedValue       addTaggedValue
236    
237       Description:       Description:
238       Add a single tag and value to this DataTagged object.       Add a single tag and value to this DataTagged object. If this tag already has
239       \param tagKey - Input - Integer key.       a value associated with it, setTaggedValue will be used to update this value.
240       \param value - Input - DataArrayView.       \param tagKey - Input - Integer tag.
241       NB: If this tag already exists in this object, this attempt to add the given       \param value - Input - Single DataArrayView value to be assigned to the tag.
242       value will have no effect. setTaggedValue is more versatile and should be      T
      used in most cases in preference to addTaggedValue.  
243    */    */
244      ESCRIPT_DLL_API
245    void    void
246    addTaggedValue(int tagKey,    addTaggedValue(int tagKey,
247                   const DataArrayView& value);                   const DataArrayView& value);
# Line 191  class DataTagged : public DataAbstract { Line 251  class DataTagged : public DataAbstract {
251       setTaggedValues       setTaggedValues
252    
253       Description:       Description:
254       Assign the given values to the tags listed.       Set the given tags to the given values in this DataTagged object.
255       \param tagKeys - Input - A vector of integer keys.       \param tagKeys - Input - A vector of integer tag.
256       \param values - Input - A vector of DataArrayViews. If this is empty       \param values - Input - A vector of DataArrayViews. If this is empty
257                        then all given tags will be assigned a value of zero. If                       all tag values will be assigned a scalar data-point of value
258                        it contains one value all tag values will be assigned the same value.                       0. If it contains one value all tag values will be assigned
259                        Otherwise if there is a mismatch between the number of keys and               this value. Otherwise consecutive tags will be assigned
260                        the number of values an exception will be generated.                       consecutive values.  If there is a mismatch between  the
261       NB: If a given tag does not yet exist in this DataTagged object, it will be added.               number of keys and the number of values an exception
262                 will be generated.
263        T
264    */    */
265      ESCRIPT_DLL_API
266    void    void
267    setTaggedValues(const TagListType& tagKeys,    setTaggedValues(const TagListType& tagKeys,
268                    const ValueListType& values);                    const ValueListType& values);
# Line 210  class DataTagged : public DataAbstract { Line 273  class DataTagged : public DataAbstract {
273    
274       Description:       Description:
275       Assign the given value to the given tag.       Assign the given value to the given tag.
276       \param tagKey - Input - Integer key.       \param tagKey - Input - Integer tag.
277       \param value - Input - Single DataArrayView value to be assigned to the tag.       \param value - Input - Single DataArrayView value to be assigned to the tag.
278       NB: If the given tag does not yet exist in this DataTagged object, it will be added.      T
279    */    */
280      ESCRIPT_DLL_API
281    virtual    virtual
282    void    void
283    setTaggedValue(int tagKey,    setTaggedValue(int tagKey,
# Line 224  class DataTagged : public DataAbstract { Line 288  class DataTagged : public DataAbstract {
288       getDataPointByTag       getDataPointByTag
289    
290       Description:       Description:
291       Return a view into the data-point associated with the given tag.       Return data-point associated with the given tag as a DataArrayView.
292       \param tag - Input - Integer key.       \param tag - Input - Integer key.
293        T
294    */    */
295      ESCRIPT_DLL_API
296    DataArrayView    DataArrayView
297    getDataPointByTag(int tag) const;    getDataPointByTag(int tag) const;
298    
# Line 235  class DataTagged : public DataAbstract { Line 301  class DataTagged : public DataAbstract {
301       getDataPoint       getDataPoint
302    
303       Description:       Description:
304       Return a view into the data-point specified by the given sample       Return the data-point specified by the given sample and data-point
305       and data-point numbers.       numbers as a DataArrayView.
      NOTE: Construction of the DataArrayView is a relatively expensive  
      operation.  
306       \param sampleNo - Input.       \param sampleNo - Input.
307       \param dataPointNo - Input.       \param dataPointNo - Input.
308        T
309    */    */
310      ESCRIPT_DLL_API
311    virtual    virtual
312    DataArrayView    DataArrayView
313    getDataPoint(int sampleNo,    getDataPoint(int sampleNo,
314                 int dataPointNo);                 int dataPointNo);
315    
316    /**    /**
317         \brief
318         getData
319    
320         Description:
321         Return pointer to the data
322        T
323      */
324      ESCRIPT_DLL_API
325      const DataArrayView::ValueType::ElementType*
326      DataTagged::getData() const;
327    
328      /**
329       \brief       \brief
330       getTagLookup       getTagLookup
331    
332       Description:       Description:
333       Return a reference to the tag offset lookup table.       Return a reference to the tag offset lookup table.
334        T
335    */    */
336      ESCRIPT_DLL_API
337    const DataMapType&    const DataMapType&
338    getTagLookup() const;    getTagLookup() const;
339    
# Line 262  class DataTagged : public DataAbstract { Line 342  class DataTagged : public DataAbstract {
342       isCurrentTag       isCurrentTag
343    
344       Description:       Description:
345       Return true if the given tag exists within the DataTagged tag keys.       Return true if the given tag exists within the DataTagged tag map.
346       NOTE: The DataTagged keys do not necessarily coincide with the tag  
347       keys for the function space.       *** NB: The DataTagged tag map does not necessarily coincide with the tag
348     */       keys in the associated function space.
349        T
350      */
351      ESCRIPT_DLL_API
352    bool    bool
353    isCurrentTag(int tag) const;    isCurrentTag(int tag) const;
354    
# Line 275  class DataTagged : public DataAbstract { Line 358  class DataTagged : public DataAbstract {
358    
359       Description:       Description:
360       Return the default value. This value is associated with any tag which       Return the default value. This value is associated with any tag which
361       is not explicitly recorded in this DataTagged object.       is not explicitly recorded in this DataTagged object's tag map.
362        T
363    */    */
364      ESCRIPT_DLL_API
365    DataArrayView&    DataArrayView&
366    getDefaultValue();    getDefaultValue();
367    
368    /**    ESCRIPT_DLL_API
      \brief  
      getDefaultValue  
   
      Description:  
      Return the default value, const version.  
   */  
369    const DataArrayView&    const DataArrayView&
370    getDefaultValue() const;    getDefaultValue() const;
371    
# Line 295  class DataTagged : public DataAbstract { Line 374  class DataTagged : public DataAbstract {
374       getLength       getLength
375    
376       Description:       Description:
377       Return the number of doubles stored for the Data.       Return the total number of doubles stored for this DataTagged object.
378        T
379    */    */
380      ESCRIPT_DLL_API
381    virtual    virtual
382    ValueType::size_type    ValueType::size_type
383    getLength() const;    getLength() const;
# Line 306  class DataTagged : public DataAbstract { Line 387  class DataTagged : public DataAbstract {
387       getSlice       getSlice
388    
389       Description:       Description:
390       Factory method that returns a newly created DataTagged object.       Factory method that returns a newly created DataTagged object generated
391       The caller is reponsible for managing the object created.       by taking the specified slice from this DataTagged object.
392         The caller is reponsible for managing the returned object.
393        T
394    */    */
395      ESCRIPT_DLL_API
396    virtual    virtual
397    DataAbstract*    DataAbstract*
398    getSlice(const DataArrayView::RegionType& region) const;    getSlice(const DataArrayView::RegionType& region) const;
399    
400    /**    /**
401       \brief       \brief
402         Slice Constructor for DataTagged.
403    
404         Description:
405         Creates a DataTagged object which is the specified slice
406         from the given DataTagged object.
407         \param other - Input - DataTagged object to slice from.
408         \param region - Input - Region to slice.
409        T
410      */
411      ESCRIPT_DLL_API
412      DataTagged(const DataTagged& other,
413             const DataArrayView::RegionType& region);
414    
415      /**
416         \brief
417       setSlice       setSlice
418    
419       Description:       Description:
420       Copy the specified region from the given value into this object.       Copy the given Data object into the specified region in this object.
421       \param value - Input - Data to copy from.       \param other - Input - Data object to copy from.
422       \param region - Input - Region to copy.       \param region - Input - Region to copy into (NB: must have same shape as other!).
423        T
424    */    */
425      ESCRIPT_DLL_API
426    virtual    virtual
427    void    void
428    setSlice(const DataAbstract* value,    setSlice(const DataAbstract* other,
429             const DataArrayView::RegionType& region);             const DataArrayView::RegionType& region);
430    
431    /**    /**
432       \brief       \brief
433       reshapeDataPoint       Archive the underlying data values to the file referenced
434         by ofstream. A count of the number of values expected to be written
435         is provided as a cross-check.
436    
437       Description:       The return value indicates success (0) or otherwise (1).
      Reshape the data point only if the data-point is currently rank 0.  
      An exception is thrown if the data-point has rank other than 0.  
      The original data point value is used for all values of the new  
      data point.  
438    */    */
439    void    ESCRIPT_DLL_API
440    reshapeDataPoint(const DataArrayView::ShapeType& shape);    int
441      archiveData(std::ofstream& archiveFile,
442                  const DataArrayView::ValueType::size_type noValues) const;
443    
444      /**
445         \brief
446         Extract the number of values specified by noValues from the file
447         referenced by ifstream to the underlying data structure.
448    
449         The return value indicates success (0) or otherwise (1).
450      */
451      ESCRIPT_DLL_API
452      int
453      extractData(std::ifstream& archiveFile,
454                  const DataArrayView::ValueType::size_type noValues);
455    
456      /**
457         \brief
458         Computes a symmetric matrix (A + AT) / 2
459    
460         \param ev - Output - symmetric matrix
461    
462      */
463      ESCRIPT_DLL_API
464      virtual void
465      symmetric(DataAbstract* ev);
466    
467      /**
468         \brief
469         Computes a nonsymmetric matrix (A - AT) / 2
470    
471         \param ev - Output - nonsymmetric matrix
472    
473      */
474      ESCRIPT_DLL_API
475      virtual void
476      nonsymmetric(DataAbstract* ev);
477    
478      /**
479         \brief
480         Computes the trace of a matrix
481    
482         \param ev - Output - the trace of a matrix
483    
484      */
485      ESCRIPT_DLL_API
486      virtual void
487      trace(DataAbstract* ev, int axis_offset);
488    
489      /**
490         \brief
491         swaps components axis0 and axis1
492    
493         \param ev - Output - swapped components
494    
495      */
496      ESCRIPT_DLL_API
497      virtual void
498      swapaxes(DataAbstract* ev, int axis0, int axis1);
499    
500      /**
501         \brief
502         Transpose each data point of this Data object around the given axis.
503    
504         \param ev - Output - the transpose of a matrix
505    
506      */
507      ESCRIPT_DLL_API
508      virtual void
509      transpose(DataAbstract* ev, int axis_offset);
510    
511      /**
512         \brief
513         solves the eigenvalue problem this*V=ev*V for the eigenvalues ev
514    
515         \param ev - Output - eigenvalues in increasing order at each data point
516    
517      */
518      ESCRIPT_DLL_API
519      virtual void
520      eigenvalues(DataAbstract* ev);
521    
522      /**
523         \brief
524         solves the eigenvalue problem this*V=ev*V for the eigenvalues ev and eigenvectors V
525    
526         \param ev - Output - eigenvalues in increasing order at each data point
527         \param V - Output - corresponding eigenvectors. They are normalized such that their length is one
528                             and the first nonzero component is positive.
529         \param tol - Input - eigenvalue with relative distance tol are treated as equal.
530    
531      */
532    
533      ESCRIPT_DLL_API
534      virtual void
535      eigenvalues_and_eigenvectors(DataAbstract* ev,DataAbstract* V,const double tol=1.e-13);
536    
537    
538   protected:   protected:
539    
# Line 349  class DataTagged : public DataAbstract { Line 544  class DataTagged : public DataAbstract {
544    DataMapType m_offsetLookup;    DataMapType m_offsetLookup;
545    
546    //    //
547    // The actual data    // the offset to the default value
548    DataArrayView::ValueType m_data;    static const int m_defaultValueOffset = 0;
549    
550    //    //
551    // the default value offset    // The actual data
552    static const int m_defaultValueOffset = 0;    ValueType m_data;
553    
554  };  };
555    
# Line 370  inline Line 565  inline
565  DataArrayView&  DataArrayView&
566  DataTagged::getDefaultValue()  DataTagged::getDefaultValue()
567  {  {
   //  
568    // The default value is always the first value.    // The default value is always the first value.
569    return getPointDataView();    return getPointDataView();
570  }  }
# Line 379  inline Line 573  inline
573  const DataArrayView&  const DataArrayView&
574  DataTagged::getDefaultValue() const  DataTagged::getDefaultValue() const
575  {  {
   //  
576    // The default value is always the first value.    // The default value is always the first value.
577    return getPointDataView();    return getPointDataView();
578  }  }
579    
580    inline
581    const DataArrayView::ValueType::ElementType*
582    DataTagged::getData() const
583    {
584       return &(m_data[0]);
585    }
586    
587    inline
588    const DataTagged::DataMapType&
589    DataTagged::getTagLookup() const
590    {
591      return m_offsetLookup;
592    }
593    
594    inline
595    DataArrayView::ValueType::size_type
596    DataTagged::getLength() const
597    {
598      return m_data.size();
599    }
600    
601  } // end of namespace  } // end of namespace
602    
603  #endif  #endif

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