[2] | 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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[9] | 80 | MaskedArray<Float> nma(narr,(narr > Float(0))); |
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[2] | 81 | outarr /= nma; |
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[9] | 82 | Array<Bool> outflagsb = !(nma.getMask()); |
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| 83 | Array<uChar> outflags(outflagsb.shape()); |
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| 84 | convertArray(outflags,outflagsb); |
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[2] | 85 | SDContainer sc(ip(0),ip(1),ip(2),ip(3)); |
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| 86 | |
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| 87 | Int n = t.nrow(); |
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| 88 | outtsarr /= Float(n/2); |
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| 89 | sc.timestamp = tme/Double(n/2); |
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| 90 | |
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| 91 | String tstr; srcn.getScalar(n,tstr);// get sourcename of "mid" point |
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| 92 | sc.sourcename = tstr; |
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| 93 | sc.putSpectrum(outarr); |
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[9] | 94 | sc.putFlags(outflags); |
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[2] | 95 | SDMemTable* sdmt = new SDMemTable(*in); |
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| 96 | sdmt->putSDContainer(sc); |
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| 97 | return CountedPtr<SDMemTable>(sdmt); |
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| 98 | } |
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[9] | 99 | |
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| 100 | static CountedPtr<SDMemTable> |
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| 101 | SDMath::quotient(const CountedPtr<SDMemTable>& on, |
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| 102 | const CountedPtr<SDMemTable>& off) { |
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| 103 | |
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| 104 | Table ton = on->table(); |
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| 105 | Table toff = off->table(); |
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[13] | 106 | ROArrayColumn<Float> tsys(toff, "TSYS"); |
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[9] | 107 | |
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| 108 | ROScalarColumn<Double> mjd(ton, "TIME"); |
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| 109 | ROScalarColumn<String> srcn(ton, "SRCNAME"); |
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| 110 | MaskedArray<Float> mon(on->rowAsMaskedArray(0)); |
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| 111 | MaskedArray<Float> moff(off->rowAsMaskedArray(0)); |
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| 112 | IPosition ipon = mon.shape(); |
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| 113 | IPosition ipoff = moff.shape(); |
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| 114 | Array<Float> tsarr(tsys.shape(0)); |
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| 115 | |
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| 116 | if (ipon != ipoff && ipon != tsarr.shape()) |
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| 117 | cerr << "on/off not conformant" << endl; |
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| 118 | |
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| 119 | //IPosition test = mon.shape()/2; |
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| 120 | MaskedArray<Float> tmp = (mon-moff); |
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| 121 | Array<Float> out(tmp.getArray()); |
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| 122 | out /= moff; |
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| 123 | out *= tsarr; |
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| 124 | Array<Bool> outflagsb = !(mon.getMask() && moff.getMask()); |
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| 125 | Array<uChar> outflags(outflagsb.shape()); |
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| 126 | convertArray(outflags,outflagsb); |
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| 127 | |
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| 128 | SDContainer sc(ipon(0),ipon(1),ipon(2),ipon(3)); |
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| 129 | String tstr; srcn.getScalar(0,tstr);// get sourcename of "on" scan |
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| 130 | sc.sourcename = tstr; |
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| 131 | Double tme; mjd.getScalar(0,tme);// get time of "on" scan |
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| 132 | sc.timestamp = tme; |
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| 133 | sc.putSpectrum(out); |
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| 134 | sc.putFlags(outflags); |
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| 135 | SDMemTable* sdmt = new SDMemTable(*on); |
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| 136 | sdmt->putSDContainer(sc); |
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| 137 | return CountedPtr<SDMemTable>(sdmt); |
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| 138 | |
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| 139 | } |
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| 140 | |
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| 141 | |
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