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trunk/esys2/escript/src/Data/DataTagged.h revision 97 by jgs, Tue Dec 14 05:39:33 2004 UTC trunk/escript/src/DataTagged.h revision 854 by gross, Thu Sep 21 05:29:42 2006 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    /**    /**
176       \brief       \brief
177         Return the tag number associated with the given data-point number
178         according to the associated function space.
179        T
180      */
181      ESCRIPT_DLL_API
182      virtual
183      int
184      getTagNumber(int dpno);
185    
186      /**
187         \brief
188       getPointOffset       getPointOffset
189    
190       Description:       Description:
191       Return the offset to the given data-point. This is somewhat artificial,       Return the offset to the given data-point value in the underlying
192       but returns the offset for the given point in the DataTagged object.       data vector.
      Only really necessary to avoid many DataArrayView objects.  
193    
194       \param sampleNo - Input - sample number.       \param sampleNo - Input - sample number.
195       \param dataPointNo - Input - data-point number.       \param dataPointNo - Input - data-point number.
196     */      T
197      */
198      ESCRIPT_DLL_API
199    virtual    virtual
200    DataArrayView::ValueType::size_type    ValueType::size_type
201    getPointOffset(int sampleNo,    getPointOffset(int sampleNo,
202                   int dataPointNo) const;                   int dataPointNo) const;
203    
# Line 155  class DataTagged : public DataAbstract { Line 206  class DataTagged : public DataAbstract {
206       addTaggedValues       addTaggedValues
207    
208       Description:       Description:
209       Add the given tags and values to this DataTagged object.       Add the given tags and values to this DataTagged object.
210       \param tagKeys - Input - A vector of integer keys.       \param tagKeys - Input - A vector of integer tags.
211       \param values - Input - A vector of DataArrayViews. If this is empty       \param values - Input - A vector of DataArrayViews. If this is empty
212                     then all given tags will be assigned a value of zero. If                       all tag values will be assigned a scalar data-point of value
213                     it contains one value all tags will be assigned the same value.                       0. If it contains one value all tag values will be assigned
214                     Otherwise if there is a mismatch between the number of tags and               this value. Otherwise consecutive tags will be assigned
215                     the number of values an exception will be generated.                       consecutive values.  If there is a mismatch between  the
216       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
217       value will have no effect. setTaggedValues is more versatile and should be               will be generated.
218       used in most cases in preference to addTaggedValues.      T
219    */    */
220      ESCRIPT_DLL_API
221    void    void
222    addTaggedValues(const TagListType& tagKeys,    addTaggedValues(const TagListType& tagKeys,
223                    const ValueListType& values);                      const ValueListType& values);  
# Line 175  class DataTagged : public DataAbstract { Line 227  class DataTagged : public DataAbstract {
227       addTaggedValue       addTaggedValue
228    
229       Description:       Description:
230       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
231       \param tagKey - Input - Integer key.       a value associated with it, setTaggedValue will be used to update this value.
232       \param value - Input - DataArrayView.       \param tagKey - Input - Integer tag.
233       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.
234       value will have no effect. setTaggedValue is more versatile and should be      T
      used in most cases in preference to addTaggedValue.  
235    */    */
236      ESCRIPT_DLL_API
237    void    void
238    addTaggedValue(int tagKey,    addTaggedValue(int tagKey,
239                   const DataArrayView& value);                   const DataArrayView& value);
# Line 191  class DataTagged : public DataAbstract { Line 243  class DataTagged : public DataAbstract {
243       setTaggedValues       setTaggedValues
244    
245       Description:       Description:
246       Assign the given values to the tags listed.       Set the given tags to the given values in this DataTagged object.
247       \param tagKeys - Input - A vector of integer keys.       \param tagKeys - Input - A vector of integer tag.
248       \param values - Input - A vector of DataArrayViews. If this is empty       \param values - Input - A vector of DataArrayViews. If this is empty
249                        then all given tags will be assigned a value of zero. If                       all tag values will be assigned a scalar data-point of value
250                        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
251                        Otherwise if there is a mismatch between the number of keys and               this value. Otherwise consecutive tags will be assigned
252                        the number of values an exception will be generated.                       consecutive values.  If there is a mismatch between  the
253       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
254                 will be generated.
255        T
256    */    */
257      ESCRIPT_DLL_API
258    void    void
259    setTaggedValues(const TagListType& tagKeys,    setTaggedValues(const TagListType& tagKeys,
260                    const ValueListType& values);                    const ValueListType& values);
# Line 210  class DataTagged : public DataAbstract { Line 265  class DataTagged : public DataAbstract {
265    
266       Description:       Description:
267       Assign the given value to the given tag.       Assign the given value to the given tag.
268       \param tagKey - Input - Integer key.       \param tagKey - Input - Integer tag.
269       \param value - Input - Single DataArrayView value to be assigned to the tag.       \param value - Input - Single DataArrayView value to be assigned to the tag.
270       NB: If the given tag does not yet exist in this DataTagged object, it will be added.      T
271    */    */
272      ESCRIPT_DLL_API
273    virtual    virtual
274    void    void
275    setTaggedValue(int tagKey,    setTaggedValue(int tagKey,
# Line 224  class DataTagged : public DataAbstract { Line 280  class DataTagged : public DataAbstract {
280       getDataPointByTag       getDataPointByTag
281    
282       Description:       Description:
283       Return a view into the data-point associated with the given tag.       Return data-point associated with the given tag as a DataArrayView.
284       \param tag - Input - Integer key.       \param tag - Input - Integer key.
285        T
286    */    */
287      ESCRIPT_DLL_API
288    DataArrayView    DataArrayView
289    getDataPointByTag(int tag) const;    getDataPointByTag(int tag) const;
290    
# Line 235  class DataTagged : public DataAbstract { Line 293  class DataTagged : public DataAbstract {
293       getDataPoint       getDataPoint
294    
295       Description:       Description:
296       Return a view into the data-point specified by the given sample       Return the data-point specified by the given sample and data-point
297       and data-point numbers.       numbers as a DataArrayView.
      NOTE: Construction of the DataArrayView is a relatively expensive  
      operation.  
298       \param sampleNo - Input.       \param sampleNo - Input.
299       \param dataPointNo - Input.       \param dataPointNo - Input.
300        T
301    */    */
302      ESCRIPT_DLL_API
303    virtual    virtual
304    DataArrayView    DataArrayView
305    getDataPoint(int sampleNo,    getDataPoint(int sampleNo,
# Line 253  class DataTagged : public DataAbstract { Line 311  class DataTagged : public DataAbstract {
311    
312       Description:       Description:
313       Return a reference to the tag offset lookup table.       Return a reference to the tag offset lookup table.
314        T
315    */    */
316      ESCRIPT_DLL_API
317    const DataMapType&    const DataMapType&
318    getTagLookup() const;    getTagLookup() const;
319    
# Line 262  class DataTagged : public DataAbstract { Line 322  class DataTagged : public DataAbstract {
322       isCurrentTag       isCurrentTag
323    
324       Description:       Description:
325       Return true if the given tag exists within the DataTagged tag keys.       Return true if the given tag exists within the DataTagged tag map.
326       NOTE: The DataTagged keys do not necessarily coincide with the tag  
327       keys for the function space.       *** NB: The DataTagged tag map does not necessarily coincide with the tag
328     */       keys in the associated function space.
329        T
330      */
331      ESCRIPT_DLL_API
332    bool    bool
333    isCurrentTag(int tag) const;    isCurrentTag(int tag) const;
334    
# Line 275  class DataTagged : public DataAbstract { Line 338  class DataTagged : public DataAbstract {
338    
339       Description:       Description:
340       Return the default value. This value is associated with any tag which       Return the default value. This value is associated with any tag which
341       is not explicitly recorded in this DataTagged object.       is not explicitly recorded in this DataTagged object's tag map.
342        T
343    */    */
344      ESCRIPT_DLL_API
345    DataArrayView&    DataArrayView&
346    getDefaultValue();    getDefaultValue();
347    
348    /**    ESCRIPT_DLL_API
      \brief  
      getDefaultValue  
   
      Description:  
      Return the default value, const version.  
   */  
349    const DataArrayView&    const DataArrayView&
350    getDefaultValue() const;    getDefaultValue() const;
351    
# Line 295  class DataTagged : public DataAbstract { Line 354  class DataTagged : public DataAbstract {
354       getLength       getLength
355    
356       Description:       Description:
357       Return the number of doubles stored for the Data.       Return the total number of doubles stored for this DataTagged object.
358        T
359    */    */
360      ESCRIPT_DLL_API
361    virtual    virtual
362    ValueType::size_type    ValueType::size_type
363    getLength() const;    getLength() const;
# Line 306  class DataTagged : public DataAbstract { Line 367  class DataTagged : public DataAbstract {
367       getSlice       getSlice
368    
369       Description:       Description:
370       Factory method that returns a newly created DataTagged object.       Factory method that returns a newly created DataTagged object generated
371       The caller is reponsible for managing the object created.       by taking the specified slice from this DataTagged object.
372         The caller is reponsible for managing the returned object.
373        T
374    */    */
375      ESCRIPT_DLL_API
376    virtual    virtual
377    DataAbstract*    DataAbstract*
378    getSlice(const DataArrayView::RegionType& region) const;    getSlice(const DataArrayView::RegionType& region) const;
379    
380    /**    /**
381       \brief       \brief
382         Slice Constructor for DataTagged.
383    
384         Description:
385         Creates a DataTagged object which is the specified slice
386         from the given DataTagged object.
387         \param other - Input - DataTagged object to slice from.
388         \param region - Input - Region to slice.
389        T
390      */
391      ESCRIPT_DLL_API
392      DataTagged(const DataTagged& other,
393             const DataArrayView::RegionType& region);
394    
395      /**
396         \brief
397       setSlice       setSlice
398    
399       Description:       Description:
400       Copy the specified region from the given value into this object.       Copy the given Data object into the specified region in this object.
401       \param value - Input - Data to copy from.       \param other - Input - Data object to copy from.
402       \param region - Input - Region to copy.       \param region - Input - Region to copy into (NB: must have same shape as other!).
403        T
404    */    */
405      ESCRIPT_DLL_API
406    virtual    virtual
407    void    void
408    setSlice(const DataAbstract* value,    setSlice(const DataAbstract* other,
409             const DataArrayView::RegionType& region);             const DataArrayView::RegionType& region);
410    
411    /**    /**
412       \brief       \brief
413       reshapeDataPoint       Archive the underlying data values to the file referenced
414         by ofstream. A count of the number of values expected to be written
415         is provided as a cross-check.
416    
417       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.  
418    */    */
419    void    ESCRIPT_DLL_API
420    reshapeDataPoint(const DataArrayView::ShapeType& shape);    int
421      archiveData(std::ofstream& archiveFile,
422                  const DataArrayView::ValueType::size_type noValues) const;
423    
424      /**
425         \brief
426         Extract the number of values specified by noValues from the file
427         referenced by ifstream to the underlying data structure.
428    
429         The return value indicates success (0) or otherwise (1).
430      */
431      ESCRIPT_DLL_API
432      int
433      extractData(std::ifstream& archiveFile,
434                  const DataArrayView::ValueType::size_type noValues);
435    
436      /**
437         \brief
438         Computes a symmetric matrix (A + AT) / 2
439    
440         \param ev - Output - symmetric matrix
441    
442      */
443      ESCRIPT_DLL_API
444      virtual void
445      symmetric(DataAbstract* ev);
446    
447      /**
448         \brief
449         Computes a nonsymmetric matrix (A - AT) / 2
450    
451         \param ev - Output - nonsymmetric matrix
452    
453      */
454      ESCRIPT_DLL_API
455      virtual void
456      nonsymmetric(DataAbstract* ev);
457    
458      /**
459         \brief
460         Computes the trace of a matrix
461    
462         \param ev - Output - the trace of a matrix
463    
464      */
465      ESCRIPT_DLL_API
466      virtual void
467      trace(DataAbstract* ev, int axis_offset);
468    
469      /**
470         \brief
471         swaps components axis0 and axis1
472    
473         \param ev - Output - swapped components
474    
475      */
476      ESCRIPT_DLL_API
477      virtual void
478      swapaxes(DataAbstract* ev, int axis0, int axis1);
479    
480      /**
481         \brief
482         Transpose each data point of this Data object around the given axis.
483    
484         \param ev - Output - the transpose of a matrix
485    
486      */
487      ESCRIPT_DLL_API
488      virtual void
489      transpose(DataAbstract* ev, int axis_offset);
490    
491      /**
492         \brief
493         solves the eigenvalue problem this*V=ev*V for the eigenvalues ev
494    
495         \param ev - Output - eigenvalues in increasing order at each data point
496    
497      */
498      ESCRIPT_DLL_API
499      virtual void
500      eigenvalues(DataAbstract* ev);
501    
502      /**
503         \brief
504         solves the eigenvalue problem this*V=ev*V for the eigenvalues ev and eigenvectors V
505    
506         \param ev - Output - eigenvalues in increasing order at each data point
507         \param V - Output - corresponding eigenvectors. They are normalized such that their length is one
508                             and the first nonzero component is positive.
509         \param tol - Input - eigenvalue with relative distance tol are treated as equal.
510    
511      */
512    
513      ESCRIPT_DLL_API
514      virtual void
515      eigenvalues_and_eigenvectors(DataAbstract* ev,DataAbstract* V,const double tol=1.e-13);
516    
517    
518   protected:   protected:
519    
# Line 349  class DataTagged : public DataAbstract { Line 524  class DataTagged : public DataAbstract {
524    DataMapType m_offsetLookup;    DataMapType m_offsetLookup;
525    
526    //    //
527    // The actual data    // the offset to the default value
528    DataArrayView::ValueType m_data;    static const int m_defaultValueOffset = 0;
529    
530    //    //
531    // the default value offset    // The actual data
532    static const int m_defaultValueOffset = 0;    ValueType m_data;
533    
534  };  };
535    
# Line 370  inline Line 545  inline
545  DataArrayView&  DataArrayView&
546  DataTagged::getDefaultValue()  DataTagged::getDefaultValue()
547  {  {
   //  
548    // The default value is always the first value.    // The default value is always the first value.
549    return getPointDataView();    return getPointDataView();
550  }  }
# Line 379  inline Line 553  inline
553  const DataArrayView&  const DataArrayView&
554  DataTagged::getDefaultValue() const  DataTagged::getDefaultValue() const
555  {  {
   //  
556    // The default value is always the first value.    // The default value is always the first value.
557    return getPointDataView();    return getPointDataView();
558  }  }
559    
560    inline
561    const DataTagged::DataMapType&
562    DataTagged::getTagLookup() const
563    {
564      return m_offsetLookup;
565    }
566    
567    inline
568    DataArrayView::ValueType::size_type
569    DataTagged::getLength() const
570    {
571      return m_data.size();
572    }
573    
574  } // end of namespace  } // end of namespace
575    
576  #endif  #endif

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