source: trunk/src/STMath.h @ 804

Last change on this file since 804 was 804, checked in by mar637, 18 years ago

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[2]1//#---------------------------------------------------------------------------
2//# SDMath.h: A collection of single dish mathematical operations
3//#---------------------------------------------------------------------------
4//# Copyright (C) 2004
[125]5//# ATNF
[2]6//#
7//# This program is free software; you can redistribute it and/or modify it
8//# under the terms of the GNU General Public License as published by the Free
9//# Software Foundation; either version 2 of the License, or (at your option)
10//# any later version.
11//#
12//# This program is distributed in the hope that it will be useful, but
13//# WITHOUT ANY WARRANTY; without even the implied warranty of
14//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
15//# Public License for more details.
16//#
17//# You should have received a copy of the GNU General Public License along
18//# with this program; if not, write to the Free Software Foundation, Inc.,
19//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
20//#
21//# Correspondence concerning this software should be addressed as follows:
22//#        Internet email: Malte.Marquarding@csiro.au
23//#        Postal address: Malte Marquarding,
24//#                        Australia Telescope National Facility,
25//#                        P.O. Box 76,
26//#                        Epping, NSW, 2121,
27//#                        AUSTRALIA
28//#
29//# $Id:
30//#---------------------------------------------------------------------------
[125]31#ifndef SDMATH_H
32#define SDMATH_H
[2]33
[38]34#include <string>
35#include <vector>
[130]36#include <casa/aips.h>
[81]37#include <casa/Utilities/CountedPtr.h>
[309]38#include <coordinates/Coordinates/FrequencyAligner.h>
[294]39
[234]40#include "SDDefs.h"
[716]41#include "SDLog.h"
[2]42
[227]43class casa::Table;
[272]44class casa::MEpoch;
[294]45class casa::MPosition;
46template<class T> class casa::PtrBlock;
[330]47template<class T> class casa::Matrix;
48template<class T> class casa::ROScalarColumn;
49template<class T> class casa::ROArrayColumn;
[227]50
[83]51namespace asap {
[2]52
53class SDMemTable;
[330]54class SDDataDesc;
[716]55 
56class SDMath : private SDLog {
[2]57
[716]58public:
59 
60  // Default constructor
61  SDMath();
62 
63  // Copy Constructor (copy semantics)
64  SDMath(const SDMath& other);
65 
66  // Assignment  (copy semantics)
67  SDMath &operator=(const SDMath& other);
68 
69  // Destructor
70  ~SDMath();
71 
72  // Binary Table operators. op=ADD, SUB, MUL, DIV, QUOTIENT
73  casa::CountedPtr<SDMemTable> binaryOperate(const casa::CountedPtr<SDMemTable>& left,
74                                             const casa::CountedPtr<SDMemTable>& right,
75                                             const casa::String& op, casa::Bool preserve,
76                                             casa::Bool tSys);
77   
78    // Average in time
79    casa::CountedPtr<SDMemTable> average(const std::vector<casa::CountedPtr<SDMemTable> >& in,
80                                         const casa::Vector<casa::Bool>& mask,
81                                         casa::Bool scanAverage,
82                                         const casa::String& weightStr,
83                                         casa::Bool align=casa::False);
84   
85  // Statistics. If row<0, all rows are done otherwise, just the
86  // specified row.
87  std::vector<float> statistic(const casa::CountedPtr<SDMemTable>& in,
88                               const casa::Vector<casa::Bool>& mask,
89                               const casa::String& which, casa::Int row) const;
90                               
[171]91// Bin up spectra
[716]92   SDMemTable* bin(const SDMemTable& in, casa::Int width);
[171]93
[716]94  // Resample spectra
[299]95   SDMemTable* resample(const SDMemTable& in, const casa::String& method,
[716]96                        casa::Float factor);
[299]97
[177]98// Smooth
[716]99  SDMemTable* smooth(const SDMemTable& in, const casa::String& kernel,
100                      casa::Float width, casa::Bool doAll);
[177]101
[221]102// Flux conversion between Jansky and Kelvin
[716]103   SDMemTable* convertFlux(const SDMemTable& in, casa::Float D,
104                           casa::Float etaAp,
105                           casa::Float JyPerK, casa::Bool doAll);
[221]106
[227]107// Gain-elevation correction
[716]108   SDMemTable* gainElevation(const SDMemTable& in,
109                             const casa::Vector<casa::Float>& coeffs,
110                             const casa::String& fileName,
111                             const casa::String& method,
112                             casa::Bool doAll);
[227]113
[309]114// Frequency Alignment
[716]115   SDMemTable* frequencyAlignment(const SDMemTable& in, const casa::String& refTime,
116                                   const casa::String& method, casa::Bool perFreqID);
[262]117
[234]118// Opacity correction
[716]119   SDMemTable* opacity(const SDMemTable& in, casa::Float tau, casa::Bool doAll);
[234]120
[248]121// Simple unary mathematical operations.  what=0 (mul) or 1 (add)
122   SDMemTable* unaryOperate(const SDMemTable& in, casa::Float offset,
[716]123                            casa::Bool doAll, casa::uInt what, casa::Bool tSys);
[169]124
[716]125  // Average polarizations.
126  SDMemTable* averagePol(const SDMemTable& in,
127                         const casa::Vector<casa::Bool>& mask,
128                         const casa::String& wtStr);
[169]129
[716]130  SDMemTable* frequencySwitch(const SDMemTable& in);
131 
132
[502]133// Rotate XY phase. Value in degrees.
[716]134   void rotateXYPhase(SDMemTable& in, casa::Float value, casa::Bool doAll);
[457]135
[502]136// Rotate Q & U by operating on the raw correlations.Value in degrees.
[716]137   void rotateLinPolPhase(SDMemTable& in, casa::Float value, casa::Bool doAll);
[457]138
[716]139 
[170]140 private:
[169]141
[152]142// Weighting type for time averaging
143
[536]144  enum WeightType {NONE=0,VAR,TSYS,TINT,TINTSYS,nWeightTypes};
[144]145
[152]146// Function to use accumulate data during time averaging
147
[653]148  void accumulate(casa::Double& timeSum, casa::Double& intSum,
149                  casa::Int& nAccum,
150                  casa::MaskedArray<casa::Float>& sum,
151                  casa::Array<casa::Float>& sumSq,
152                  casa::Array<casa::Float>& nPts,
153                  casa::Array<casa::Float>& tSysSum,
154                  casa::Array<casa::Float>& tSysSqSum,
155                  const casa::Array<casa::Float>& tSys, 
156                  const casa::Array<casa::Float>& nInc,
157                  const casa::Vector<casa::Bool>& mask,
158                  casa::Double time, casa::Double interval,
159                  const std::vector<casa::CountedPtr<SDMemTable> >& in,
160                  casa::uInt iTab, casa::uInt iRow,
161                  casa::uInt axis, casa::uInt nAxesSub,
[716]162                  casa::Bool useMask, WeightType wtType);
[146]163
[354]164// Work out conversion factor for converting Jy<->K per IF per row and apply
[716]165    void convertBrightnessUnits(SDMemTable* pTabOut, const SDMemTable& in,
166                                casa::Bool toKelvin, casa::Float sFac, casa::Bool doAll);
[152]167
[162]168// Convert weight string to enum value
169
[716]170   void convertWeightString(WeightType& wt, const casa::String& weightStr,
171                             casa::Bool listType);;
[227]172
173// Convert interpolation type string
[716]174//   void convertInterpString(casa::Int& type, const casa::String& interp);
[317]175   void convertInterpString(casa::InterpolateArray1D<casa::Double,casa::Float>::InterpolationMethod& method, 
[716]176                             const casa::String& interp);
[227]177
[480]178// Scale data with values from an ascii Table
179   void scaleFromAsciiTable(SDMemTable* pTabOut, const SDMemTable& in,
[234]180                              const casa::String& fileName,
181                              const casa::String& col0, const casa::String& col1,
182                              const casa::String& methodStr, casa::Bool doAll,
[716]183                              const casa::Vector<casa::Float>& xOut, casa::Bool doTSys);
[230]184
[480]185// Scale data with values from a Table
186   void scaleFromTable(SDMemTable* pTabOut, const SDMemTable& in, const casa::Table& tTable,
[234]187                         const casa::String& col0, const casa::String& col1,
188                         const casa::String& methodStr, casa::Bool doAll,
[716]189                         const casa::Vector<casa::Float>& xOut, casa::Bool doTSys);
[230]190
[480]191// Scale data and optionally TSys by values in a Vector
[716]192   void scaleByVector(SDMemTable* pTabOut, const SDMemTable& in,
[480]193                       casa::Bool doAll, const casa::Vector<casa::Float>& factor,
[716]194                       casa::Bool doTSys);
[234]195
[354]196// Convert time String to Epoch
[716]197   casa::MEpoch epochFromString(const casa::String& str, casa::MEpoch::Types timeRef);
[234]198
[354]199// Function to fill Scan Container when averaging in time
[234]200
[716]201  void fillSDC(SDContainer& sc, const casa::Array<casa::Bool>& mask,
[354]202                const casa::Array<casa::Float>& data,
203                const casa::Array<casa::Float>& tSys,
204                casa::Int scanID, casa::Double timeStamp,
205                casa::Double interval, const casa::String& sourceName,
[716]206                const casa::Vector<casa::uInt>& freqID);
[354]207
208// Format EPoch
[716]209   casa::String formatEpoch(const casa::MEpoch& epoch) const;
[354]210
211// Align in Frequency
[716]212   SDMemTable* frequencyAlign(const SDMemTable& in,
[354]213                              casa::MFrequency::Types system,
214                              const casa::String& timeRef,
[653]215                              const casa::String& method,
[716]216                               casa::Bool perIF);
[354]217
[309]218// Generate frequency aligners
[716]219   void generateFrequencyAligners(casa::PtrBlock<casa::FrequencyAligner<casa::Float>* >& a,
[330]220                                   const SDDataDesc& dDesc,
[309]221                                   const SDMemTable& in, casa::uInt nChan,
222                                   casa::MFrequency::Types system,
223                                   const casa::MPosition& refPos,
[653]224                                   const casa::MEpoch& refEpoch,
[716]225                                   casa::Bool perFreqID);
[294]226
[716]227// Generate data description table(combines source and freqID);
228   void generateDataDescTable(casa::Matrix<casa::uInt>& ddIdx,
[330]229                               SDDataDesc& dDesc,
230                               casa::uInt nIF,
231                               const SDMemTable& in,
232                               const casa::Table& tabIn,
233                               const casa::ROScalarColumn<casa::String>& srcCol,
[397]234                               const casa::ROArrayColumn<casa::uInt>& fqIDCol,
[716]235                               casa::Bool perFreqID);
[330]236
[480]237// Get row range from SDMemTable state
[716]238  casa::Vector<casa::uInt> getRowRange(const SDMemTable& in) const;
[480]239
240// Is row in the row range ?
[716]241  casa::Bool rowInRange(casa::uInt i, const casa::Vector<casa::uInt>& range) const;
[480]242
[434]243// Set slice to cursor or all axes
[716]244    void setCursorSlice(casa::IPosition& start, casa::IPosition& end,
245                        casa::Bool doAll, const SDMemTable& in) const;
[272]246
[354]247// Function to normalize data when averaging in time
[272]248
[716]249  void normalize(casa::MaskedArray<casa::Float>& data,
[354]250                  const casa::Array<casa::Float>& sumSq,
[518]251                  const casa::Array<casa::Float>& tSysSumSq,
[354]252                  const casa::Array<casa::Float>& nPts,
[518]253                  casa::Double intSum,
[716]254                 WeightType wtType, casa::Int axis, casa::Int nAxes);
[354]255
256// Put the data and mask into the SDContainer
[716]257   void putDataInSDC(SDContainer& sc, const casa::Array<casa::Float>& data,
258                     const casa::Array<casa::Bool>& mask);
[354]259
260// Read ascii file into a Table
261
[716]262  casa::Table readAsciiFile(const casa::String& fileName) const;
[146]263
[716]264}; // class
[330]265
[165]266} // namespace
[146]267
[165]268#endif
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