source: branches/Release-2-fixes/src/SDMath.h@ 1007

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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"
[2]41
[227]42class casa::Table;
[272]43class casa::MEpoch;
[294]44class casa::MPosition;
45template<class T> class casa::PtrBlock;
[330]46template<class T> class casa::Matrix;
47template<class T> class casa::ROScalarColumn;
48template<class T> class casa::ROArrayColumn;
[227]49
[272]50
[330]51
[83]52namespace asap {
[2]53
54class SDMemTable;
[330]55class SDDataDesc;
[2]56
[170]57class SDMath {
[152]58
[170]59 public:
60
61// Default constructor
62 SDMath();
63
64// Copy Constructor (copy semantics)
[699]65 SDMath(const SDMath& other);
[170]66
67// Assignment (copy semantics)
68 SDMath &operator=(const SDMath& other);
69
[183]70// Destructor
71 ~SDMath();
72
[248]73// Binary Table operators. op=ADD, SUB, MUL, DIV, QUOTIENT
[699]74 casa::CountedPtr<SDMemTable> binaryOperate(const casa::CountedPtr<SDMemTable>& left,
[248]75 const casa::CountedPtr<SDMemTable>& right,
[294]76 const casa::String& op, casa::Bool preserve,
77 casa::Bool tSys) const;
[152]78
79// Average in time
[653]80 casa::CountedPtr<SDMemTable>
81 average(const std::vector<casa::CountedPtr<SDMemTable> >& in,
82 const casa::Vector<casa::Bool>& mask,
83 casa::Bool scanAverage,
84 const casa::String& weightStr,
85 casa::Bool align=casa::False) const;
[48]86
[234]87// Statistics. If row<0, all rows are done otherwise, just the
88// specified row.
[170]89 std::vector<float> statistic(const casa::CountedPtr<SDMemTable>& in,
[234]90 const casa::Vector<casa::Bool>& mask,
91 const casa::String& which, casa::Int row) const;
[130]92
[171]93// Bin up spectra
[234]94 SDMemTable* bin(const SDMemTable& in, casa::Int width) const;
[171]95
[299]96// Resample spectra
97 SDMemTable* resample(const SDMemTable& in, const casa::String& method,
98 casa::Float factor) const;
99
[177]100// Smooth
[699]101 SDMemTable* smooth(const SDMemTable& in, const casa::String& kernel,
[234]102 casa::Float width, casa::Bool doAll) const;
[177]103
[221]104// Flux conversion between Jansky and Kelvin
[699]105 SDMemTable* convertFlux(const SDMemTable& in, casa::Float D, casa::Float etaAp,
[354]106 casa::Float JyPerK, casa::Bool doAll) const;
[221]107
[227]108// Gain-elevation correction
[699]109 SDMemTable* gainElevation(const SDMemTable& in, const casa::Vector<casa::Float>& coeffs,
[234]110 const casa::String& fileName,
111 const casa::String& method, casa::Bool doAll) const;
[227]112
[309]113// Frequency Alignment
[699]114 SDMemTable* frequencyAlignment(const SDMemTable& in, const casa::String& refTime,
[397]115 const casa::String& method, casa::Bool perFreqID) const;
[262]116
[234]117// Opacity correction
[699]118 SDMemTable* opacity(const SDMemTable& in, casa::Float tau, casa::Bool doAll) const;
[234]119
[248]120// Simple unary mathematical operations. what=0 (mul) or 1 (add)
121 SDMemTable* unaryOperate(const SDMemTable& in, casa::Float offset,
[294]122 casa::Bool doAll, casa::uInt what, casa::Bool tSys) const;
[169]123
[532]124// Average polarizations.
[315]125 SDMemTable* averagePol(const SDMemTable& in, const casa::Vector<casa::Bool>& mask,
126 const casa::String& wtStr) const;
[169]127
[699]128 SDMemTable* frequencySwitch(const SDMemTable& in) const;
129
130
[502]131// Rotate XY phase. Value in degrees.
[699]132 void rotateXYPhase(SDMemTable& in, casa::Float value, casa::Bool doAll);
[457]133
[502]134// Rotate Q & U by operating on the raw correlations.Value in degrees.
[699]135 void rotateLinPolPhase(SDMemTable& in, casa::Float value, casa::Bool doAll);
[457]136
[502]137
[170]138 private:
[169]139
[152]140// Weighting type for time averaging
141
[536]142 enum WeightType {NONE=0,VAR,TSYS,TINT,TINTSYS,nWeightTypes};
[144]143
[152]144// Function to use accumulate data during time averaging
145
[653]146 void accumulate(casa::Double& timeSum, casa::Double& intSum,
147 casa::Int& nAccum,
148 casa::MaskedArray<casa::Float>& sum,
149 casa::Array<casa::Float>& sumSq,
150 casa::Array<casa::Float>& nPts,
151 casa::Array<casa::Float>& tSysSum,
152 casa::Array<casa::Float>& tSysSqSum,
153 const casa::Array<casa::Float>& tSys,
154 const casa::Array<casa::Float>& nInc,
155 const casa::Vector<casa::Bool>& mask,
156 casa::Double time, casa::Double interval,
157 const std::vector<casa::CountedPtr<SDMemTable> >& in,
158 casa::uInt iTab, casa::uInt iRow,
159 casa::uInt axis, casa::uInt nAxesSub,
160 casa::Bool useMask, WeightType wtType) const;
[146]161
[354]162// Work out conversion factor for converting Jy<->K per IF per row and apply
[699]163 void convertBrightnessUnits(SDMemTable* pTabOut, const SDMemTable& in,
[354]164 casa::Bool toKelvin, casa::Float sFac, casa::Bool doAll) const;
[152]165
[162]166// Convert weight string to enum value
167
[699]168 void convertWeightString(WeightType& wt, const casa::String& weightStr,
[518]169 casa::Bool listType) const;
[227]170
171// Convert interpolation type string
[317]172// void convertInterpString(casa::Int& type, const casa::String& interp) const;
173 void convertInterpString(casa::InterpolateArray1D<casa::Double,casa::Float>::InterpolationMethod& method,
174 const casa::String& interp) const;
[227]175
[480]176// Scale data with values from an ascii Table
177 void scaleFromAsciiTable(SDMemTable* pTabOut, const SDMemTable& in,
[234]178 const casa::String& fileName,
179 const casa::String& col0, const casa::String& col1,
180 const casa::String& methodStr, casa::Bool doAll,
[480]181 const casa::Vector<casa::Float>& xOut, casa::Bool doTSys) const;
[230]182
[480]183// Scale data with values from a Table
184 void scaleFromTable(SDMemTable* pTabOut, const SDMemTable& in, const casa::Table& tTable,
[234]185 const casa::String& col0, const casa::String& col1,
186 const casa::String& methodStr, casa::Bool doAll,
[480]187 const casa::Vector<casa::Float>& xOut, casa::Bool doTSys) const;
[230]188
[480]189// Scale data and optionally TSys by values in a Vector
[699]190 void scaleByVector(SDMemTable* pTabOut, const SDMemTable& in,
[480]191 casa::Bool doAll, const casa::Vector<casa::Float>& factor,
192 casa::Bool doTSys) const;
[234]193
[354]194// Convert time String to Epoch
[699]195 casa::MEpoch epochFromString(const casa::String& str, casa::MEpoch::Types timeRef) const;
[234]196
[354]197// Function to fill Scan Container when averaging in time
[234]198
[699]199 void fillSDC(SDContainer& sc, const casa::Array<casa::Bool>& mask,
[354]200 const casa::Array<casa::Float>& data,
201 const casa::Array<casa::Float>& tSys,
202 casa::Int scanID, casa::Double timeStamp,
203 casa::Double interval, const casa::String& sourceName,
204 const casa::Vector<casa::uInt>& freqID) const;
205
206// Format EPoch
207 casa::String formatEpoch(const casa::MEpoch& epoch) const;
208
209// Align in Frequency
[699]210 SDMemTable* frequencyAlign(const SDMemTable& in,
[354]211 casa::MFrequency::Types system,
212 const casa::String& timeRef,
[653]213 const casa::String& method,
214 casa::Bool perIF) const;
[354]215
[309]216// Generate frequency aligners
[699]217 void generateFrequencyAligners(casa::PtrBlock<casa::FrequencyAligner<casa::Float>* >& a,
[330]218 const SDDataDesc& dDesc,
[309]219 const SDMemTable& in, casa::uInt nChan,
220 casa::MFrequency::Types system,
221 const casa::MPosition& refPos,
[653]222 const casa::MEpoch& refEpoch,
223 casa::Bool perFreqID) const;
[294]224
[699]225// Generate data description table(combines source and freqID)
226 void generateDataDescTable(casa::Matrix<casa::uInt>& ddIdx,
[330]227 SDDataDesc& dDesc,
228 casa::uInt nIF,
229 const SDMemTable& in,
230 const casa::Table& tabIn,
231 const casa::ROScalarColumn<casa::String>& srcCol,
[397]232 const casa::ROArrayColumn<casa::uInt>& fqIDCol,
233 casa::Bool perFreqID) const;
[330]234
[480]235// Get row range from SDMemTable state
[699]236 casa::Vector<casa::uInt> getRowRange(const SDMemTable& in) const;
[480]237
238// Is row in the row range ?
[699]239 casa::Bool rowInRange(casa::uInt i, const casa::Vector<casa::uInt>& range) const;
[480]240
[434]241// Set slice to cursor or all axes
[699]242 void setCursorSlice(casa::IPosition& start, casa::IPosition& end,
[434]243 casa::Bool doAll, const SDMemTable& in) const;
[272]244
[354]245// Function to normalize data when averaging in time
[272]246
[699]247 void normalize(casa::MaskedArray<casa::Float>& data,
[354]248 const casa::Array<casa::Float>& sumSq,
[518]249 const casa::Array<casa::Float>& tSysSumSq,
[354]250 const casa::Array<casa::Float>& nPts,
[518]251 casa::Double intSum,
[354]252 WeightType wtType, casa::Int axis, casa::Int nAxes) const;
253
254// Put the data and mask into the SDContainer
[699]255 void putDataInSDC(SDContainer& sc, const casa::Array<casa::Float>& data,
[354]256 const casa::Array<casa::Bool>& mask) const;
257
258// Read ascii file into a Table
259
[699]260 casa::Table readAsciiFile(const casa::String& fileName) const;
[165]261};
[146]262
[330]263
264
265
[165]266} // namespace
[146]267
[165]268#endif
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