1 | //#--------------------------------------------------------------------------- |
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2 | //# MathUtilities.cc: General math operations |
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3 | //#--------------------------------------------------------------------------- |
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4 | //# Copyright (C) 2004 |
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5 | //# 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 | |
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32 | #include <casa/aips.h> |
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33 | #include <casa/Arrays/Vector.h> |
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34 | #include <casa/Arrays/MaskedArray.h> |
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35 | #include <casa/Arrays/MaskArrMath.h> |
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36 | #include <casa/Arrays/VectorSTLIterator.h> |
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37 | #include <casa/BasicSL/String.h> |
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38 | |
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39 | #include "MathUtils.h" |
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40 | |
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41 | using namespace casa; |
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42 | |
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43 | float mathutil::statistics(const String& which, |
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44 | const MaskedArray<Float>& data) |
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45 | { |
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46 | String str(which); |
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47 | str.upcase(); |
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48 | if (str.contains(String("MIN"))) { |
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49 | return min(data); |
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50 | } else if (str.contains(String("MAX"))) { |
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51 | return max(data); |
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52 | } else if (str.contains(String("SUMSQ"))) { |
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53 | return sumsquares(data); |
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54 | } else if (str.contains(String("SUM"))) { |
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55 | return sum(data); |
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56 | } else if (str.contains(String("MEAN"))) { |
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57 | return mean(data); |
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58 | } else if (str.contains(String("VAR"))) { |
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59 | return variance(data); |
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60 | } else if (str.contains(String("STDDEV"))) { |
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61 | return stddev(data); |
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62 | } else if (str.contains(String("AVDEV"))) { |
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63 | return avdev(data); |
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64 | } else if (str.contains(String("RMS"))) { |
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65 | uInt n = data.nelementsValid(); |
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66 | return sqrt(sumsquares(data)/n); |
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67 | } else if (str.contains(String("MED"))) { |
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68 | return median(data); |
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69 | } |
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70 | } |
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71 | |
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72 | |
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73 | void mathutil::replaceMaskByZero(Vector<Float>& data, const Vector<Bool>& mask) |
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74 | { |
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75 | for (uInt i=0; i<data.nelements(); i++) { |
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76 | if (!mask[i]) data[i] = 0.0; |
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77 | } |
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78 | } |
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79 | |
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80 | |
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81 | std::vector<std::string> mathutil::tovectorstring(const Vector<String>& in) |
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82 | { |
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83 | std::vector<std::string> out; |
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84 | VectorSTLIterator<String> it(in); |
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85 | for (uInt i=0; it != in.end(); ++it,++i) { |
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86 | out.push_back(*it); |
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87 | } |
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88 | return out; |
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89 | } |
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90 | |
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91 | Vector<String> mathutil::toVectorString(const std::vector<std::string>& in) |
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92 | { |
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93 | Vector<String> out(in.size()); |
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94 | uInt i=0; |
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95 | std::vector<std::string>::const_iterator it; |
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96 | for (it=in.begin();it != in.end();++it,++i) { |
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97 | out[i] = casa::String(*it); |
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98 | } |
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99 | return out; |
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100 | } |
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