/usr/include/casacore/scimath/Functionals/Gaussian1DParam.h is in casacore-dev 2.2.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 | //# Gaussian1DParam.h: Parameter handling for one-dimensional Gaussian class
//# Copyright (C) 2001,2002,2005
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
#ifndef SCIMATH_GAUSSIAN1DPARAM_H
#define SCIMATH_GAUSSIAN1DPARAM_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/casa/BasicSL/String.h>
#include <casacore/scimath/Functionals/Function1D.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward declarations
// <summary> Parameter handling for one dimensional Gaussian class.</summary>
// <use visibility=local>
// <reviewed reviewer="tcornwel" date="1996/02/22" tests="tGaussian1D"
// demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class="FunctionParam">FunctionParam</linkto> class
// <li> <linkto class="Function1D">Function1D</linkto> class
// </prerequisite>
// <etymology>
// A 1-dimensional Gaussian's parameters.
// </etymology>
// <synopsis>
// A <src>Gaussian1D</src> is described by a height, center, and width.
// The parameters (height, center and width) may be changed at run time.
//
// The width of the Gaussian (for the constructors or the <src>setWidth
// </src> function) is always specified in terms of the full width at half
// maximum (FWHM). It is always positive and attempts to set a non-positive
// width will throw an assertion when in debug mode.
//
// The peak height of the Gaussian can be specified at construction time or
// by using the <src> setHeight </src> function. Alternatively the <src>
// setFlux </src> function can be used to implicitly set the peak height by
// specifying the integrated area under the Gaussian. The height (or flux)
// can be positive, negative or zero, as this class makes no assumptions on
// what quantity the height represents.
//
// <note role=tip> Changing the width of the Gaussian will not affect
// its peak height but will change its flux. So you should always set the
// width before setting the flux. </note>
//
// The parameter interface (see
// <linkto class="FunctionParam">FunctionParam</linkto> class),
// is used to provide an interface to the
// <linkto module="Fitting">Fitting</linkto> classes.
//
// There are 3 parameters that are used to describe the Gaussian:
// <ol>
// <li> The height of the Gaussian. This is identical to the value
// returned using the <src>height()</src> member function.
// <li> The center of the Gaussian in the x direction. This is identical to
// the value returned using the <src>center()</src> member function.
// <li> The width (FWHM) of the Gaussian. To aid convergence of
// the non-linear fitting routines this parameter is allowed to be
// negative. This does not affect the shape of the Gaussian as the
// square of the width is used when evaluating the function.
// </ol>
//
// An enumeration for the <src>HEIGHT</src>, <src>WIDTH</src> and
// <src>CENTER</src> parameter index is provided, enabling the setting
// and reading of parameters with the <src>[]</src> operator. The
// <src>mask()</src> methods can be used to check and set the parameter masks.
//
// This class is in general used implicitly by the <src>Gaussian1D</src>
// class only.
// </synopsis>
// <example>
// <srcblock>
// Gaussian1D<Double> gf(5.0, 25.0, 7);
// gf(25); // = 5.0
// gf.setHeight(1.0);
// gf[WIDTH](2.0);
// gf[CENTER](0.0);
// gf(1); // = 0.5*height = 0.5
// </srcblock>
// </example>
// <templating arg=T>
// <li> T should have standard numerical operators and exp() function. Current
// implementation only tested for real types (and their AutoDiffs).
// </templating>
// <thrown>
// <li> Assertion in debug mode if attempt is made to set a negative width
// <li> AipsError if incorrect parameter number specified.
// </thrown>
// <todo asof="2001/08/19">
// <li> Gaussians that know about their DFT's could be required eventually.
// </todo>
template<class T> class Gaussian1DParam : public Function1D<T> {
public:
//# Enumerations
enum { HEIGHT=0, CENTER, WIDTH };
//# Constructors
// Constructs the one dimensional Gaussians. Defaults:
// height=1, center=0, width(FWHM)=1.
// <note role=warning> Could not use default arguments
// that worked both with gcc and IRIX and all templates</note>
// <group>
Gaussian1DParam();
explicit Gaussian1DParam(const T &height);
Gaussian1DParam(const T &height, const T ¢er);
Gaussian1DParam(const T &height, const T ¢er, const T &width);
// </group>
// Copy constructor (deep copy)
// <group>
Gaussian1DParam(const Gaussian1DParam<T> &other);
template <class W>
Gaussian1DParam(const Gaussian1DParam<W> &other) :
Function1D<T>(other),
fwhm2int(T(1.0)/sqrt(log(T(16.0)))) {}
// </group>
// Copy assignment (deep copy)
Gaussian1DParam<T> &operator=(const Gaussian1DParam<T> &other);
// Destructor
virtual ~Gaussian1DParam();
//# Operators
//# Member functions
// Give name of function
virtual const String &name() const { static String x("gaussian1d");
return x; }
// Get or set the peak height of the Gaussian
// <group>
T height() const { return param_p[HEIGHT]; }
void setHeight(const T &height) { param_p[HEIGHT] = height; }
// </group>
// Get or set the analytical integrated area underneath the Gaussian.
// Use these functions as an alternative to the height functions.
// <group>
T flux() const;
void setFlux(const T &flux);
// </group>
// Get or set the center ordinate of the Gaussian
// <group>
T center() const { return param_p[CENTER]; }
void setCenter(const T &cnter) { param_p[CENTER] = cnter; }
// </group>
// Get or set the FWHM of the Gaussian.
// <group>
T width() const { return param_p[WIDTH]; }
void setWidth(const T &width) { param_p[WIDTH] = width; }
// </group>
protected:
// Constant to scale halfwidth at 1/e to FWHM
T fwhm2int;
//# Make members of parent classes known.
protected:
using Function1D<T>::param_p;
public:
using Function1D<T>::nparameters;
};
} //# NAMESPACE CASACORE - END
#ifndef CASACORE_NO_AUTO_TEMPLATES
#include <casacore/scimath/Functionals/Gaussian1DParam.tcc>
#endif //# CASACORE_NO_AUTO_TEMPLATES
#endif
|