source: trunk/src/MathUtils.h@ 2656

Last change on this file since 2656 was 2619, checked in by Takeshi Nakazato, 12 years ago

New Development: No

JIRA Issue: Yes CAS-2825

Ready for Test: Yes

Interface Changes: No

What Interface Changed: Please list interface changes

Test Programs: not available

Put in Release Notes: No

Module(s): Module Names change impacts.

Description: Describe your changes here...

Take care of 2pi rotation on RA axis.


  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 4.1 KB
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1//#---------------------------------------------------------------------------
2//# MathUtilities.h: General math operations
3//#---------------------------------------------------------------------------
4//# Copyright (C) 2004
5//# ATNF
6//#
7//# This program is free software; you can redistribute it and/or modify it
8//# under the terms of the GNU General Public License as published by the Free
9//# Software Foundation; either version 2 of the License, or (at your option)
10//# any later version.
11//#
12//# This program is distributed in the hope that it will be useful, but
13//# WITHOUT ANY WARRANTY; without even the implied warranty of
14//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15//# Public License for more details.
16//#
17//# You should have received a copy of the GNU General Public License along
18//# with this program; if not, write to the Free Software Foundation, Inc.,
19//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
20//#
21//# Correspondence concerning this software should be addressed as follows:
22//# Internet email: Malte.Marquarding@csiro.au
23//# Postal address: Malte Marquarding,
24//# Australia Telescope National Facility,
25//# P.O. Box 76,
26//# Epping, NSW, 2121,
27//# AUSTRALIA
28//#
29//# $Id: MathUtils.h 2619 2012-08-02 08:19:59Z TakeshiNakazato $
30//#---------------------------------------------------------------------------
31#ifndef MATHUTILS_H
32#define MATHUTILS_H
33
34#include <string>
35#include <vector>
36#include <casa/aips.h>
37#include <casa/Arrays/Vector.h>
38#include <casa/BasicSL/String.h>
39#include <casa/Arrays/IPosition.h>
40
41namespace mathutil {
42
43// Hanning smoothing
44/**
45 * Hanning smooth a masked vector
46 * @param out the smoothed vector
47 * @param outmask the smoothed mask
48 * @param in the input vector
49 * @param mask the input mask
50 * @param relaxed a weighting scheme
51 * @param ignoreOther drop every second channel (NYI)
52 */
53void hanning(casa::Vector<casa::Float>& out,
54 casa::Vector<casa::Bool>& outmask,
55 const casa::Vector<casa::Float>& in,
56 const casa::Vector<casa::Bool>& mask,
57 casa::Bool relaxed=casa::False,
58 casa::Bool ignoreOther=casa::False);
59
60/**
61 * Apply a running median to a masked vector.
62 * Edge solution: The first and last hwidth channels will be replicated
63 * from the first/last value from a full window.
64 * @param out the smoothed vector
65 * @param outmask the smoothed mask
66 * @param in the input vector
67 * @param mask the input mask
68 * @param hwidth half-width of the smoothing window
69 */
70void runningMedian(casa::Vector<casa::Float>& out,
71 casa::Vector<casa::Bool>& outflag,
72 const casa::Vector<casa::Float>& in,
73 const casa::Vector<casa::Bool>& flag,
74 float hwidth);
75
76void polyfit(casa::Vector<casa::Float>& out,
77 casa::Vector<casa::Bool>& outmask,
78 const casa::Vector<casa::Float>& in,
79 const casa::Vector<casa::Bool>& mask,
80 float hwidth, int order);
81
82// Generate specified statistic
83float statistics(const casa::String& which,
84 const casa::MaskedArray<casa::Float>& data);
85
86// Return a position of min or max value
87casa::IPosition minMaxPos(const casa::String& which,
88 const casa::MaskedArray<casa::Float>& data);
89
90// Replace masked value by zero
91void replaceMaskByZero(casa::Vector<casa::Float>& data,
92 const casa::Vector<casa::Bool>& mask);
93
94/**
95 * Convert casa implementations to stl
96 * @param in casa string
97 * @return a std vector of std strings
98 */
99std::vector<std::string> tovectorstring(const casa::Vector<casa::String>& in);
100
101/**
102 * convert stl implementations to casa versions
103 * @param in
104 * @return
105 */
106casa::Vector<casa::String> toVectorString(const std::vector<std::string>& in);
107
108void doZeroOrderInterpolation(casa::Vector<casa::Float>& data,
109 std::vector<bool>& mask);
110
111/**
112 * RA nomalization: n*2pi rotation if necessary
113 **/
114void rotateRA( const casa::Vector<casa::Double> &in,
115 casa::Vector<casa::Double> &out ) ;
116void rotateRA( casa::Vector<casa::Double> &v ) ;
117
118/**
119 * tool to record current time stamp
120 **/
121double gettimeofday_sec() ;
122
123}
124
125#endif
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