| 1 | //#---------------------------------------------------------------------------
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| 2 | //# MathUtilities.h: 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: MathUtils.h 2619 2012-08-02 08:19:59Z TakeshiNakazato $
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| 30 | //#---------------------------------------------------------------------------
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| 31 | #ifndef MATHUTILS_H
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| 32 | #define MATHUTILS_H
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| 33 |
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| 34 | #include <string>
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| 35 | #include <vector>
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| 36 | #include <casa/aips.h>
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| 37 | #include <casa/Arrays/Vector.h>
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| 38 | #include <casa/BasicSL/String.h>
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| 39 | #include <casa/Arrays/IPosition.h>
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| 40 |
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| 41 | namespace mathutil {
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| 42 |
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| 43 | // Hanning smoothing
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| 44 | /**
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| 45 | * Hanning smooth a masked vector
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| 46 | * @param out the smoothed vector
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| 47 | * @param outmask the smoothed mask
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| 48 | * @param in the input vector
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| 49 | * @param mask the input mask
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| 50 | * @param relaxed a weighting scheme
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| 51 | * @param ignoreOther drop every second channel (NYI)
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| 52 | */
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| 53 | void hanning(casa::Vector<casa::Float>& out,
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| 54 | casa::Vector<casa::Bool>& outmask,
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| 55 | const casa::Vector<casa::Float>& in,
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| 56 | const casa::Vector<casa::Bool>& mask,
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| 57 | casa::Bool relaxed=casa::False,
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| 58 | casa::Bool ignoreOther=casa::False);
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| 59 |
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| 60 | /**
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| 61 | * Apply a running median to a masked vector.
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| 62 | * Edge solution: The first and last hwidth channels will be replicated
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| 63 | * from the first/last value from a full window.
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| 64 | * @param out the smoothed vector
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| 65 | * @param outmask the smoothed mask
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| 66 | * @param in the input vector
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| 67 | * @param mask the input mask
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| 68 | * @param hwidth half-width of the smoothing window
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| 69 | */
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| 70 | void runningMedian(casa::Vector<casa::Float>& out,
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| 71 | casa::Vector<casa::Bool>& outflag,
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| 72 | const casa::Vector<casa::Float>& in,
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| 73 | const casa::Vector<casa::Bool>& flag,
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| 74 | float hwidth);
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| 75 |
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| 76 | void polyfit(casa::Vector<casa::Float>& out,
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| 77 | casa::Vector<casa::Bool>& outmask,
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| 78 | const casa::Vector<casa::Float>& in,
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| 79 | const casa::Vector<casa::Bool>& mask,
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| 80 | float hwidth, int order);
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| 81 |
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| 82 | // Generate specified statistic
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| 83 | float statistics(const casa::String& which,
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| 84 | const casa::MaskedArray<casa::Float>& data);
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| 85 |
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| 86 | // Return a position of min or max value
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| 87 | casa::IPosition minMaxPos(const casa::String& which,
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| 88 | const casa::MaskedArray<casa::Float>& data);
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| 89 |
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| 90 | // Replace masked value by zero
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| 91 | void replaceMaskByZero(casa::Vector<casa::Float>& data,
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| 92 | const casa::Vector<casa::Bool>& mask);
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| 93 |
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| 94 | /**
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| 95 | * Convert casa implementations to stl
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| 96 | * @param in casa string
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| 97 | * @return a std vector of std strings
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| 98 | */
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| 99 | std::vector<std::string> tovectorstring(const casa::Vector<casa::String>& in);
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| 100 |
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| 101 | /**
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| 102 | * convert stl implementations to casa versions
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| 103 | * @param in
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| 104 | * @return
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| 105 | */
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| 106 | casa::Vector<casa::String> toVectorString(const std::vector<std::string>& in);
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| 107 |
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| 108 | void doZeroOrderInterpolation(casa::Vector<casa::Float>& data,
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| 109 | std::vector<bool>& mask);
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| 110 |
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| 111 | /**
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| 112 | * RA nomalization: n*2pi rotation if necessary
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| 113 | **/
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| 114 | void rotateRA( const casa::Vector<casa::Double> &in,
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| 115 | casa::Vector<casa::Double> &out ) ;
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| 116 | void rotateRA( casa::Vector<casa::Double> &v ) ;
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| 117 |
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| 118 | /**
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| 119 | * tool to record current time stamp
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| 120 | **/
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| 121 | double gettimeofday_sec() ;
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| 122 |
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| 123 | }
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| 124 |
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| 125 | #endif
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