Line data Source code
1 : //# MakeAppproxPSFAlgorithm.cc: implementation of MakeApproxPSFAlgorithm.h
2 : //# Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003
3 : //# Associated Universities, Inc. Washington DC, USA.
4 : //#
5 : //# This library is free software; you can redistribute it and/or modify it
6 : //# under the terms of the GNU Library General Public License as published by
7 : //# the Free Software Foundation; either version 2 of the License, or (at your
8 : //# option) any later version.
9 : //#
10 : //# This library is distributed in the hope that it will be useful, but WITHOUT
11 : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 : //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
13 : //# License for more details.
14 : //#
15 : //# You should have received a copy of the GNU Library General Public License
16 : //# along with this library; if not, write to the Free Software Foundation,
17 : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
18 : //#
19 : //# Correspondence concerning AIPS++ should be addressed as follows:
20 : //# Internet email: casa-feedback@nrao.edu.
21 : //# Postal address: AIPS++ Project Office
22 : //# National Radio Astronomy Observatory
23 : //# 520 Edgemont Road
24 : //# Charlottesville, VA 22903-2475 USA
25 : //#
26 : //# $Id$
27 :
28 : #include <casacore/casa/BasicSL/String.h>
29 : #include <casacore/casa/Arrays/Array.h>
30 : #include <casacore/casa/Arrays/ArrayMath.h>
31 : #include <casacore/casa/Arrays/Array.h>
32 : #include <casacore/lattices/Lattices/ArrayLattice.h>
33 : #include <casacore/lattices/Lattices/PagedArray.h>
34 : #include <casacore/lattices/LEL/LatticeExpr.h>
35 : #include <casacore/lattices/Lattices/SubLattice.h>
36 : #include <casacore/lattices/LRegions/LCBox.h>
37 : #include <casacore/lattices/LEL/LatticeExprNode.h>
38 : #include <casacore/casa/OS/File.h>
39 : #include <casacore/casa/Exceptions/Error.h>
40 : #include <casacore/casa/BasicSL/String.h>
41 : #include <casacore/casa/Utilities/Assert.h>
42 : #include <msvis/MSVis/VisSet.h>
43 : #include <msvis/MSVis/VisSetUtil.h>
44 : #include <msvis/MSVis/VisibilityIterator.h>
45 : #include <msvis/MSVis/VisBuffer.h>
46 : #include <sstream>
47 : #include <casacore/casa/Logging/LogMessage.h>
48 : #include <casacore/casa/Logging/LogIO.h>
49 : #include <casacore/casa/Logging/LogSink.h>
50 : #include <casacore/ms/MeasurementSets/MeasurementSet.h>
51 : #include <casacore/ms/MeasurementSets/MSColumns.h>
52 : #include <synthesis/MeasurementComponents/MakeApproxPSFAlgorithm.h>
53 : #include <casacore/casa/OS/Time.h>
54 : #include <casacore/images/Images/ImageInterface.h>
55 : #include <casacore/images/Images/PagedImage.h>
56 : #include <casacore/images/Images/TempImage.h>
57 : #include <synthesis/TransformMachines/StokesImageUtil.h>
58 : #include <unistd.h>
59 :
60 : using namespace casacore;
61 : namespace casa { //# NAMESPACE CASA - BEGIN
62 :
63 : extern Applicator applicator;
64 :
65 0 : MakeApproxPSFAlgorithm::MakeApproxPSFAlgorithm() :
66 0 : myName_p("MakeApproxPSFAlgorithm"),
67 0 : msFileName_p(""), beam_p(0), beamArray_p(0)
68 : {
69 0 : };
70 :
71 0 : MakeApproxPSFAlgorithm::~MakeApproxPSFAlgorithm(){
72 0 : };
73 :
74 0 : void MakeApproxPSFAlgorithm::get(){
75 :
76 0 : Record container_ft;
77 0 : applicator.get(container_ft);
78 :
79 : // Construct the FTMachine
80 0 : ft_p = new GridFT(container_ft);
81 0 : applicator.get(msFileName_p);
82 0 : applicator.get(weight_p);
83 :
84 0 : Record image_container;
85 0 : applicator.get(image_container);
86 0 : cImage_p = new TempImage<Complex> ();
87 0 : String error;
88 0 : cImage_p->fromRecord(error, image_container);
89 0 : psf_p = new TempImage<Float>(cImage_p->shape(), cImage_p->coordinates());
90 0 : };
91 :
92 0 : void MakeApproxPSFAlgorithm::put(){
93 :
94 0 : applicator.put(beam_p);
95 0 : applicator.put(*beamArray_p);
96 0 : delete ft_p;
97 0 : delete cImage_p;
98 0 : delete psf_p;
99 0 : beamArray_p->resize();
100 0 : weight_p.resize();
101 0 : };
102 :
103 0 : String& MakeApproxPSFAlgorithm::name(){
104 0 : return myName_p;
105 : };
106 :
107 0 : void MakeApproxPSFAlgorithm::task(){
108 :
109 : try{
110 0 : MeasurementSet ms(msFileName_p, TableLock(TableLock::UserNoReadLocking),
111 0 : Table::Update);
112 : // Deal with subtle sorted_table locking issues
113 0 : ms.unlock();
114 0 : Block<Int> sort(0);
115 0 : Matrix<Int> noselection;
116 0 : Double interval=10.0;
117 0 : VisSet vs(ms, sort, noselection, interval);
118 :
119 0 : ft_p->makeImage(FTMachine::PSF, vs, *cImage_p,
120 0 : weight_p);
121 0 : StokesImageUtil::To(*psf_p, *cImage_p);
122 :
123 0 : beam_p= *(new Vector<Float>(3));
124 0 : StokesImageUtil::FitGaussianPSF(*psf_p, beam_p);
125 :
126 0 : Int nx=psf_p->shape()(0);
127 0 : Int ny=psf_p->shape()(1);
128 0 : LCBox psfbox(IPosition(4, 0, 0, 0, 0),
129 0 : IPosition(4, nx-1, ny-1, 0, 0),
130 0 : psf_p->shape());
131 :
132 0 : SubLattice<Float> psf_sl (*psf_p, psfbox, true);
133 0 : Array<Float> tempbeamArray;
134 : //Bool rStat = ((Lattice<Float> &)psf_sl).get(tempbeamArray);
135 : //UNUSED: Bool rStat = psf_sl.get(tempbeamArray);
136 :
137 0 : if (beamArray_p) delete beamArray_p;
138 0 : beamArray_p= new Array<Float>(tempbeamArray);
139 :
140 0 : ms.unlock();
141 :
142 0 : } catch (AipsError x) {
143 0 : cout << "Exceptionally yours: " << x.getMesg() << endl;
144 0 : };
145 0 : };
146 :
147 :
148 :
149 :
150 :
151 :
152 :
153 :
154 : } //# NAMESPACE CASA - END
155 :
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