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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