| 1 | //#---------------------------------------------------------------------------
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| 2 | //# SDMath.cc: A collection of single dish mathematical operations
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| 3 | //#---------------------------------------------------------------------------
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| 4 | //# Copyright (C) 2004
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| 5 | //# Malte Marquarding, ATNF
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| 6 | //#
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| 7 | //# This program is free software; you can redistribute it and/or modify it
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| 8 | //# under the terms of the GNU General Public License as published by the Free
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| 9 | //# Software Foundation; either version 2 of the License, or (at your option)
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| 10 | //# any later version.
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| 11 | //#
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| 12 | //# This program is distributed in the hope that it will be useful, but
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| 13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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| 15 | //# Public License for more details.
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| 16 | //#
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| 17 | //# You should have received a copy of the GNU General Public License along
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| 18 | //# with this program; if not, write to the Free Software Foundation, Inc.,
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| 19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
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| 20 | //#
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| 21 | //# Correspondence concerning this software should be addressed as follows:
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| 22 | //# Internet email: Malte.Marquarding@csiro.au
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| 23 | //# Postal address: Malte Marquarding,
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| 24 | //# Australia Telescope National Facility,
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| 25 | //# P.O. Box 76,
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| 26 | //# Epping, NSW, 2121,
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| 27 | //# AUSTRALIA
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| 28 | //#
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| 29 | //# $Id:
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| 30 | //#---------------------------------------------------------------------------
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| 31 | #include <aips/aips.h>
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| 32 | #include <aips/Utilities/String.h>
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| 33 | #include <aips/Arrays/IPosition.h>
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| 34 | #include <aips/Arrays/Array.h>
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| 35 | #include <aips/Arrays/ArrayMath.h>
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| 36 | #include <aips/Arrays/ArrayLogical.h>
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| 37 | #include <aips/Arrays/MaskedArray.h>
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| 38 | #include <aips/Arrays/MaskArrMath.h>
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| 39 | #include <aips/Arrays/MaskArrLogi.h>
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| 40 |
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| 41 | #include <aips/Tables/Table.h>
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| 42 | #include <aips/Tables/ScalarColumn.h>
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| 43 | #include <aips/Tables/ArrayColumn.h>
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| 44 |
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| 45 | #include "SDContainer.h"
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| 46 | #include "SDMemTable.h"
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| 47 |
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| 48 | #include "SDMath.h"
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| 49 |
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| 50 | using namespace atnf_sd;
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| 51 |
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| 52 | static CountedPtr<SDMemTable> SDMath::average(const CountedPtr<SDMemTable>& in) {
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| 53 | Table t = in->table();
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| 54 | ROArrayColumn<Float> tsys(t, "TSYS");
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| 55 | ROScalarColumn<Double> mjd(t, "TIME");
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| 56 | ROScalarColumn<String> srcn(t, "SRCNAME");
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| 57 | IPosition ip = in->rowAsMaskedArray(0).shape();
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| 58 | Array<Float> outarr(ip); outarr =0.0;
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| 59 | Array<Float> narr(ip);narr = 0.0;
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| 60 | Array<Float> narrinc(ip);narrinc = 1.0;
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| 61 |
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| 62 | Array<Float> tsarr(tsys.shape(0));
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| 63 | Array<Float> outtsarr(tsys.shape(0));
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| 64 | Double tme = 0.0;
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| 65 |
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| 66 | for (uInt i=0; i < t.nrow(); i++) {
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| 67 | // data stuff
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| 68 | MaskedArray<Float> marr(in->rowAsMaskedArray(i));
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| 69 | outarr += marr;
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| 70 | MaskedArray<Float> n(narrinc,marr.getMask());
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| 71 | narr += n;
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| 72 | // get
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| 73 | tsys.get(i, tsarr);// this is probably unneccessary as tsys should
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| 74 | outtsarr += tsarr; // be constant
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| 75 | Double tmp;
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| 76 | mjd.get(i,tmp);
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| 77 | tme += tmp;// average time
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| 78 | }
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| 79 | // averaging using mask
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| 80 | MaskedArray<Float> nma (narr,(narr > Float(0)));
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| 81 | outarr /= nma;
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| 82 |
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| 83 | SDContainer sc(ip(0),ip(1),ip(2),ip(3));
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| 84 |
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| 85 | Int n = t.nrow();
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| 86 | outtsarr /= Float(n/2);
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| 87 | sc.timestamp = tme/Double(n/2);
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| 88 |
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| 89 | String tstr; srcn.getScalar(n,tstr);// get sourcename of "mid" point
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| 90 | sc.sourcename = tstr;
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| 91 | sc.putSpectrum(outarr);
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| 92 | //sc.putFlags(outflags);
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| 93 | SDMemTable* sdmt = new SDMemTable(*in);
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| 94 | sdmt->putSDContainer(sc);
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| 95 | return CountedPtr<SDMemTable>(sdmt);
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| 96 | }
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