Line data Source code
1 : // -*- C++ -*-
2 : //# Utils.h: Definition of global functions in Utils.cc
3 : //# Copyright (C) 1997,1998,1999,2000,2001,2002,2003
4 : //# Associated Universities, Inc. Washington DC, USA.
5 : //#
6 : //# This library is free software; you can redistribute it and/or modify it
7 : //# under the terms of the GNU Library General Public License as published by
8 : //# the Free Software Foundation; either version 2 of the License, or (at your
9 : //# option) any later version.
10 : //#
11 : //# This library is distributed in the hope that it will be useful, but WITHOUT
12 : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 : //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
14 : //# License for more details.
15 : //#
16 : //# You should have received a copy of the GNU Library General Public License
17 : //# along with this library; if not, write to the Free Software Foundation,
18 : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
19 : //#
20 : //# Correspondence concerning AIPS++ should be addressed as follows:
21 : //# Internet email: casa-feedback@nrao.edu.
22 : //# Postal address: AIPS++ Project Office
23 : //# National Radio Astronomy Observatory
24 : //# 520 Edgemont Road
25 : //# Charlottesville, VA 22903-2475 USA
26 : //#
27 : //# $Id$
28 : #include <casacore/casa/aips.h>
29 : #include <casacore/casa/Exceptions/Error.h>
30 : #include <msvis/MSVis/VisBuffer.h>
31 : #include <casacore/casa/Quanta/Quantum.h>
32 : #include <casacore/ms/MeasurementSets/MSColumns.h>
33 : #include <casacore/ms/MeasurementSets/MSRange.h>
34 : #include <casacore/images/Images/ImageInterface.h>
35 : #include <casacore/ms/MeasurementSets/MeasurementSet.h>
36 : #include <casacore/casa/Arrays/Array.h>
37 : #include <casacore/casa/Logging/LogIO.h>
38 : #include <synthesis/TransformMachines/CFCell.h>
39 : #include <iostream>
40 :
41 : #ifndef SYNTHESIS_UTILS_H
42 : #define SYNTHESIS_UTILS_H
43 :
44 : namespace casa
45 : {
46 : casacore::Int getPhaseCenter(casacore::MeasurementSet& ms, casacore::MDirection& dir0, casacore::Int whichField=-1);
47 : casacore::Bool findMaxAbsLattice(const casacore::ImageInterface<casacore::Float>& lattice,
48 : casacore::Float& maxAbs,casacore::IPosition& posMaxAbs);
49 : casacore::Bool findMaxAbsLattice(const casacore::ImageInterface<casacore::Float>& masklat,
50 : const casacore::Lattice<casacore::Float>& lattice,
51 : casacore::Float& maxAbs,casacore::IPosition& posMaxAbs,
52 : casacore::Bool flip=false);
53 : casacore::Double getCurrentTimeStamp(const VisBuffer& vb);
54 : void makeStokesAxis(casacore::Int npol_p, casacore::Vector<casacore::String>& polType, casacore::Vector<casacore::Int>& whichStokes);
55 : casacore::Double getPA(const VisBuffer& vb);
56 : void storeImg(casacore::String fileName,casacore::ImageInterface<casacore::Complex>& theImg, casacore::Bool writeReIm=false);
57 : void storeImg(casacore::String fileName,casacore::ImageInterface<casacore::Float>& theImg);
58 : void storeArrayAsImage(casacore::String fileName, const casacore::CoordinateSystem& coords, const casacore::Array<casacore::Complex>& cf);
59 : void storeArrayAsImage(casacore::String fileName, const casacore::CoordinateSystem& coords, const casacore::Array<casacore::DComplex>& cf);
60 : void storeArrayAsImage(casacore::String fileName, const casacore::CoordinateSystem& coords, const casacore::Array<casacore::Float>& cf);
61 :
62 : casacore::Bool isVBNaN(const VisBuffer& vb, casacore::String& mesg);
63 : namespace SynthesisUtils
64 : {
65 : void rotateComplexArray(casacore::LogIO& logIO, casacore::Array<casacore::Complex>& inArray,
66 : casacore::CoordinateSystem& inCS,
67 : casacore::Array<casacore::Complex>& outArray,
68 : casacore::Double dAngleRad,
69 : casacore::String interpMathod=casacore::String("CUBIC"),
70 : casacore::Bool modifyInCS=true);
71 : void findLatticeMax(const casacore::Array<casacore::Complex>& lattice,
72 : casacore::Vector<casacore::Float>& maxAbs,
73 : casacore::Vector<casacore::IPosition>& posMaxAbs) ;
74 : void findLatticeMax(const casacore::ImageInterface<casacore::Complex>& lattice,
75 : casacore::Vector<casacore::Float>& maxAbs,
76 : casacore::Vector<casacore::IPosition>& posMaxAbs) ;
77 : void findLatticeMax(const casacore::ImageInterface<casacore::Float>& lattice,
78 : casacore::Vector<casacore::Float>& maxAbs,
79 : casacore::Vector<casacore::IPosition>& posMaxAbs) ;
80 286 : inline casacore::Int nint(const casacore::Double& v) {return (casacore::Int)std::floor(v+0.5);}
81 0 : inline casacore::Int nint(const casacore::Float& v) {return (casacore::Int)std::floor(v+0.5);}
82 : inline casacore::Bool near(const casacore::Double& d1, const casacore::Double& d2,
83 : const casacore::Double EPS=1E-6)
84 : {
85 : casacore::Bool b1=(fabs(d1-d2) < EPS);
86 : return b1;
87 : }
88 : template <class T>
89 0 : inline void SETVEC(casacore::Vector<T>& lhs, const casacore::Vector<T>& rhs)
90 0 : {lhs.resize(rhs.shape()); lhs = rhs;};
91 : template <class T>
92 0 : inline void SETVEC(casacore::Array<T>& lhs, const casacore::Array<T>& rhs)
93 0 : {lhs.resize(rhs.shape()); lhs = rhs;};
94 :
95 : template <class T>
96 : T getenv(const char *name, const T defaultVal);
97 : casacore::Float libreSpheroidal(casacore::Float nu);
98 : casacore::Double getRefFreq(const VisBuffer& vb);
99 : void makeFTCoordSys(const casacore::CoordinateSystem& coords,
100 : const casacore::Int& convSize,
101 : const casacore::Vector<casacore::Double>& ftRef,
102 : casacore::CoordinateSystem& ftCoords);
103 :
104 : void expandFreqSelection(const casacore::Matrix<casacore::Double>& freqSelection,
105 : casacore::Matrix<casacore::Double>& expandedFreqList,
106 : casacore::Matrix<casacore::Double>& expandedConjFreqList);
107 :
108 : template <class T>
109 : void libreConvolver(casacore::Array<T>& c1, const casacore::Array<T>& c2);
110 0 : inline casacore::Double conjFreq(const casacore::Double& freq, const casacore::Double& refFreq)
111 0 : {return sqrt(2*refFreq*refFreq - freq*freq);};
112 :
113 : casacore::Double nearestValue(const casacore::Vector<casacore::Double>& list, const casacore::Double& val, casacore::Int& index);
114 :
115 : template <class T>
116 : T stdNearestValue(const std::vector<T>& list, const T& val, casacore::Int& index);
117 :
118 : casacore::CoordinateSystem makeUVCoords(casacore::CoordinateSystem& imageCoordSys,
119 : casacore::IPosition& shape);
120 :
121 : casacore::Vector<casacore::Int> mapSpwIDToDDID(const VisBuffer& vb, const casacore::Int& spwID);
122 : casacore::Vector<casacore::Int> mapSpwIDToPolID(const VisBuffer& vb, const casacore::Int& spwID);
123 : void calcIntersection(const casacore::Int blc1[2], const casacore::Int trc1[2], const casacore::Float blc2[2], const casacore::Float trc2[2],
124 : casacore::Float blc[2], casacore::Float trc[2]);
125 : casacore::Bool checkIntersection(const casacore::Int blc1[2], const casacore::Int trc1[2], const casacore::Float blc2[2], const casacore::Float trc2[2]);
126 :
127 : casacore::String mjdToString(casacore::Time& mjd);
128 :
129 : template<class Iterator>
130 : Iterator Unique(Iterator first, Iterator last);
131 :
132 : void showCS(const casacore::CoordinateSystem& cs, std::ostream& os, const casacore::String& msg=casacore::String());
133 : const casacore::Array<casacore::Complex> getCFPixels(const casacore::String& Dir, const casacore::String& fileName);
134 :
135 : void rotate2(const double& actualPA, CFCell& baseCFC, CFCell& cfc, const double& rotAngleIncr);
136 :
137 : casacore::TableRecord getCFParams(const casacore::String& dirName,const casacore::String& fileName,
138 : casacore::Array<casacore::Complex>& pixelBuffer,
139 : casacore::CoordinateSystem& coordSys,
140 : casacore::Double& sampling,
141 : casacore::Double& paVal,
142 : casacore::Int& xSupport, casacore::Int& ySupport,
143 : casacore::Double& fVal, casacore::Double& wVal, casacore::Int& mVal,
144 : casacore::Double& conjFreq, casacore::Int& conjPoln,
145 : casacore::Bool loadPixels,
146 : casacore::Bool loadMiscInfo=true);
147 : }
148 :
149 : void getHADec(casacore::MeasurementSet& ms, const VisBuffer& vb, casacore::Double &HA, casacore::Double& RA, casacore::Double& Dec);
150 : /////////////////////////////////////////////////////////////////////////////
151 : //
152 : // An interface class to detect changes in the VisBuffer
153 : // Exact meaning of the "change" is defined in the derived classes
154 : //
155 : struct IChangeDetector {
156 : // return true if a change occurs in the given row since the last call of update
157 : virtual casacore::Bool changed(const VisBuffer &vb, casacore::Int row) const = 0;
158 : // start looking for a change from the given row of the VisBuffer
159 : virtual void update(const VisBuffer &vb, casacore::Int row) = 0;
160 :
161 : // reset to the state which exists just after construction
162 : virtual void reset() = 0;
163 :
164 : // some derived methods, which use the abstract virtual function changed(vb,row)
165 :
166 : // return true if a change occurs somewhere in the buffer
167 : casacore::Bool changed(const VisBuffer &vb) const;
168 : // return true if a change occurs somewhere in the buffer starting from row1
169 : // up to row2 (row2=-1 means up to the end of the buffer). The row number,
170 : // where the change occurs is returned in the row2 parameter
171 : casacore::Bool changedBuffer(const VisBuffer &vb, casacore::Int row1, casacore::Int &row2) const;
172 : protected:
173 : // a virtual destructor to make the compiler happy
174 : virtual ~IChangeDetector();
175 : };
176 : //
177 : //////////////////////////////////////////////////////////////////////////////
178 :
179 : //////////////////////////////////////////////////////////////////////////////
180 : //
181 : // ParAngleChangeDetector - a class to detect a change in the parallactic
182 : // angle.
183 : //
184 : class ParAngleChangeDetector : public IChangeDetector {
185 : casacore::Double pa_tolerance_p; // a parallactic angle tolerance. If exeeded,
186 : // the angle is considered to be changed.
187 : casacore::Double last_pa_p; // last value of the parallactic angle
188 : public:
189 : // The default constructor
190 0 : ParAngleChangeDetector():pa_tolerance_p(0.0) {};
191 : // set up the tolerance, which determines how much the position angle should
192 : // change to report the change by this class
193 : ParAngleChangeDetector(const casacore::Quantity &pa_tolerance);
194 :
195 : virtual void setTolerance(const casacore::Quantity &pa_tolerance);
196 : // reset to the state which exists just after construction
197 : virtual void reset();
198 :
199 : // return parallactic angle tolerance
200 : casacore::Quantity getParAngleTolerance() const;
201 :
202 : // implementation of the base class' virtual functions
203 :
204 : // return true if a change occurs in the given row since the last call of update
205 : virtual casacore::Bool changed(const VisBuffer &vb, casacore::Int row) const;
206 : // start looking for a change from the given row of the VisBuffer
207 : virtual void update(const VisBuffer &vb, casacore::Int row);
208 : };
209 :
210 : //
211 : /////////////////////////////////////////////////////////////////////////////
212 :
213 : }
214 : #endif
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