[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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[15] | 57 | ROScalarColumn<Double> integr(t, "INTERVAL"); |
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[2] | 58 | IPosition ip = in->rowAsMaskedArray(0).shape(); |
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| 59 | Array<Float> outarr(ip); outarr =0.0; |
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| 60 | Array<Float> narr(ip);narr = 0.0; |
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| 61 | Array<Float> narrinc(ip);narrinc = 1.0; |
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| 62 | |
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| 63 | Array<Float> tsarr(tsys.shape(0)); |
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| 64 | Array<Float> outtsarr(tsys.shape(0)); |
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| 65 | Double tme = 0.0; |
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[15] | 66 | Double inttime = 0.0; |
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[2] | 67 | |
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| 68 | for (uInt i=0; i < t.nrow(); i++) { |
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| 69 | // data stuff |
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| 70 | MaskedArray<Float> marr(in->rowAsMaskedArray(i)); |
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| 71 | outarr += marr; |
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| 72 | MaskedArray<Float> n(narrinc,marr.getMask()); |
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| 73 | narr += n; |
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| 74 | // get |
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| 75 | tsys.get(i, tsarr);// this is probably unneccessary as tsys should |
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| 76 | outtsarr += tsarr; // be constant |
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| 77 | Double tmp; |
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| 78 | mjd.get(i,tmp); |
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| 79 | tme += tmp;// average time |
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[15] | 80 | integr.get(i,tmp); |
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| 81 | inttime += tmp; |
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[2] | 82 | } |
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| 83 | // averaging using mask |
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[9] | 84 | MaskedArray<Float> nma(narr,(narr > Float(0))); |
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[2] | 85 | outarr /= nma; |
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[9] | 86 | Array<Bool> outflagsb = !(nma.getMask()); |
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| 87 | Array<uChar> outflags(outflagsb.shape()); |
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| 88 | convertArray(outflags,outflagsb); |
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[2] | 89 | SDContainer sc(ip(0),ip(1),ip(2),ip(3)); |
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| 90 | |
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| 91 | Int n = t.nrow(); |
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| 92 | outtsarr /= Float(n/2); |
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| 93 | sc.timestamp = tme/Double(n/2); |
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[15] | 94 | sc.interval =inttime; |
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| 95 | String tstr; srcn.getScalar(0,tstr);// get sourcename of "mid" point |
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[2] | 96 | sc.sourcename = tstr; |
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| 97 | sc.putSpectrum(outarr); |
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[9] | 98 | sc.putFlags(outflags); |
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[15] | 99 | SDMemTable* sdmt = new SDMemTable(*in,True); |
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[2] | 100 | sdmt->putSDContainer(sc); |
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| 101 | return CountedPtr<SDMemTable>(sdmt); |
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| 102 | } |
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[9] | 103 | |
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| 104 | static CountedPtr<SDMemTable> |
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| 105 | SDMath::quotient(const CountedPtr<SDMemTable>& on, |
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| 106 | const CountedPtr<SDMemTable>& off) { |
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| 107 | |
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| 108 | Table ton = on->table(); |
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| 109 | Table toff = off->table(); |
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[15] | 110 | ROArrayColumn<Float> tsys(toff, "TSYS"); |
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[9] | 111 | ROScalarColumn<Double> mjd(ton, "TIME"); |
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[15] | 112 | ROScalarColumn<Double> integr(ton, "INTERVAL"); |
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[9] | 113 | ROScalarColumn<String> srcn(ton, "SRCNAME"); |
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| 114 | MaskedArray<Float> mon(on->rowAsMaskedArray(0)); |
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| 115 | MaskedArray<Float> moff(off->rowAsMaskedArray(0)); |
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| 116 | IPosition ipon = mon.shape(); |
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| 117 | IPosition ipoff = moff.shape(); |
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| 118 | Array<Float> tsarr(tsys.shape(0)); |
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| 119 | |
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| 120 | if (ipon != ipoff && ipon != tsarr.shape()) |
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| 121 | cerr << "on/off not conformant" << endl; |
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| 122 | |
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| 123 | //IPosition test = mon.shape()/2; |
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| 124 | MaskedArray<Float> tmp = (mon-moff); |
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| 125 | Array<Float> out(tmp.getArray()); |
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| 126 | out /= moff; |
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| 127 | out *= tsarr; |
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| 128 | Array<Bool> outflagsb = !(mon.getMask() && moff.getMask()); |
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| 129 | Array<uChar> outflags(outflagsb.shape()); |
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| 130 | convertArray(outflags,outflagsb); |
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| 131 | |
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| 132 | SDContainer sc(ipon(0),ipon(1),ipon(2),ipon(3)); |
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| 133 | String tstr; srcn.getScalar(0,tstr);// get sourcename of "on" scan |
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| 134 | sc.sourcename = tstr; |
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| 135 | Double tme; mjd.getScalar(0,tme);// get time of "on" scan |
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| 136 | sc.timestamp = tme; |
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[15] | 137 | integr.getScalar(0,tme); |
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| 138 | sc.interval = tme; |
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[9] | 139 | sc.putSpectrum(out); |
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| 140 | sc.putFlags(outflags); |
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[15] | 141 | SDMemTable* sdmt = new SDMemTable(*on, True); |
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[9] | 142 | sdmt->putSDContainer(sc); |
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| 143 | return CountedPtr<SDMemTable>(sdmt); |
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| 144 | |
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| 145 | } |
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[15] | 146 | static CountedPtr<SDMemTable> |
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| 147 | SDMath::multiply(const CountedPtr<SDMemTable>& in, Float factor) { |
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| 148 | SDMemTable* sdmt = new SDMemTable(*in); |
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| 149 | Table t = sdmt->table(); |
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| 150 | ArrayColumn<Float> spec(t,"SPECTRA"); |
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[9] | 151 | |
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[15] | 152 | for (uInt i=0; i < t.nrow(); i++) { |
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| 153 | // data stuff |
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| 154 | MaskedArray<Float> marr(sdmt->rowAsMaskedArray(i)); |
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| 155 | marr *= factor; |
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| 156 | spec.put(i, marr.getArray()); |
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| 157 | } |
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| 158 | return CountedPtr<SDMemTable>(sdmt); |
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| 159 | } |
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| 160 | /* |
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| 161 | static Float SDMath::rms(const SDMemTable& in, uInt whichRow) { |
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| 162 | Table t = in.table(); |
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| 163 | MaskedArray<Float> marr(in.rowAsMaskedArray(whichRow,True)); |
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| 164 | |
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| 165 | } |
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| 166 | */ |
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