source: branches/casa-release-4_3/external-alma/components/SpectralComponents/SpectralElement.cc@ 3067

//# SpectralElement.cc: Describes (a set of related) spectral lines
//# Copyright (C) 2001,2004
//# 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: SpectralElement.cc 21451 2014-06-10 07:48:08Z gervandiepen $

#include <components/SpectralComponents/SpectralElement.h>

#include <casa/BasicSL/Constants.h>
#include <casa/BasicSL/String.h>
#include <casa/Arrays/ArrayLogical.h>
#include <casa/Exceptions/Error.h>
#include <casa/Utilities/MUString.h>
#include <scimath/Mathematics/AutoDiffMath.h>
#include <scimath/Functionals/Function.h>

//debug only
#include <scimath/Functionals/CompiledFunction.h>
#include <casa/Arrays/ArrayIO.h>

#include <casa/iostream.h>

namespace casa { //# NAMESPACE CASA - BEGIN

SpectralElement::SpectralElement(SpectralElement::Types type, const Vector<Double>& parms)
        : _type(type), _params(parms), _errors(parms.size(), 0),
          _fixed(parms.size(), False) {}


SpectralElement::SpectralElement(const SpectralElement &other)
: _type(other._type), _params(other._params.copy()), _errors(other._errors.copy()),
  _fixed(other._fixed.copy()),
  _function(
                std::tr1::shared_ptr<Function<Double, Double> >(
                        other._function->clone()
                )
        ) {}

SpectralElement::~SpectralElement() {}

SpectralElement &SpectralElement::operator=(
        const SpectralElement &other
) {
        if (this != &other) {
                _type = other._type;
                uInt n = other._params.size();
                _params.resize(n);
                _params = other._params.copy();
                _errors.resize(n);
                _errors = other._errors.copy();
                _fixed.resize(n);
                _fixed = other._fixed.copy();
                _function = std::tr1::shared_ptr<Function<Double, Double> >(
                        other._function->clone()
                );
        }
        return *this;
}

Double SpectralElement::operator[](const uInt n) const {
        if (n >= _params.size()) {
                throw(AipsError("SpectralElement: Illegal index for parameter"));
        }
        return _params[n];
}

Bool SpectralElement::operator==(
        const SpectralElement& other
) const {
        if (this == &other) {
                return True;
        }
        return (
                _type == other._type && allNear(_params, other._params, 1e-8)
                && allNear(_errors, other._errors, 1e-8)
                && allTrue(_fixed == other._fixed)
        );
}

const String* SpectralElement::allTypes(
        Int &nall, const SpectralElement::Types *&typ
) {
        static const String tname[SpectralElement::N_Types] = {
                String("GAUSSIAN"),
                String("POLYNOMIAL"),
                String("COMPILED"),
                String("GAUSSIAN MULTIPLET"),
                String("LORENTZIAN"),
                String("POWER LOGARITHMIC POLYNOMIAL"),
                String("LOGARITHMIC TRANSFORMED POLYNOMIAL")

        };

        static const SpectralElement::Types oname[SpectralElement::N_Types] = {
                SpectralElement::GAUSSIAN,
                SpectralElement::POLYNOMIAL,
                SpectralElement::COMPILED,
                SpectralElement::GMULTIPLET,
                SpectralElement::LORENTZIAN,
                SpectralElement::POWERLOGPOLY,
                SpectralElement::LOGTRANSPOLY

        };

        nall = SpectralElement::N_Types;
        typ    = oname;
        return tname;
}

void SpectralElement::_set(const Vector<Double>& params) {
        _params = params.copy();
        for (uInt i=0; i<params.size(); i++) {
                (*_function)[i] = params[i];
        }
}

void SpectralElement::_setType(const SpectralElement::Types type) {
        _type = type;
}

const String &SpectralElement::fromType(SpectralElement::Types tp) {
        Int nall;
        const SpectralElement::Types *typ;
        const String *const tname = SpectralElement::allTypes(nall, typ);
        return tname[tp];
}

Bool SpectralElement::toType(
        SpectralElement::Types &tp, const String &typname
) {
        Int nall;
        const SpectralElement::Types *typ;
        const String *const tname = SpectralElement::allTypes(nall, typ);

        // Make sure a value returned
        tp = typ[0];
        Int i = MUString::minimaxNC(typname, SpectralElement::N_Types, tname);
        if (i >= nall) {
                return False;
        }
        tp = typ[i];
        return True;
}

void SpectralElement::_setFunction(
        const std::tr1::shared_ptr<Function<Double, Double> >& f
) {
        _function = f;
}

Double SpectralElement::operator()(const Double x) const {
        return (*_function)(x);
}

void SpectralElement::get(Vector<Double> &param) const {
        param = _params.copy();
}

Vector<Double> SpectralElement::get() const {
        return _params.copy();
}

void SpectralElement::getError(Vector<Double> &err) const {
        err = _errors.copy();
}

Vector<Double> SpectralElement::getError() const {
        return _errors.copy();
}

void SpectralElement::setError(const Vector<Double> &err) {
        if (err.nelements() != _params.nelements()) {
                throw(
                        AipsError(
                                "SpectralElement: setting incorrect "
                                "number of errors in the element"
                        )
                );
        }
        _errors = err.copy();
}

void SpectralElement::fix(const Vector<Bool> &fix) {
        if (fix.nelements() != _params.nelements()) {
                throw(
                        AipsError(
                                "SpectralElement: setting incorrect number of fixed "
                                "in the element"
                        )
                );
        }
        _fixed = fix.copy();
        for (uInt i=0; i<_fixed.size(); i++) {
                _function->mask(i) = fix[i];
        }
}

const Vector<Bool>& SpectralElement::fixed() const {
        return _fixed;
}

Bool SpectralElement::toRecord(RecordInterface &out) const {
        out.define(RecordFieldId("type"), fromType(_type));
        Vector<Double> ptmp(_params);
        Vector<Double> etmp(_params);
        out.define(RecordFieldId("parameters"), _params);
        out.define(RecordFieldId("errors"), _errors);
        out.define(RecordFieldId("fixed"), _fixed);
        return True;
}

void SpectralElement::set(const Vector<Double>& params) {
        if (params.size() != get().size()) {
                throw AipsError(
                        "Input number of parameters does not match "
                        "the current number of parameters"
                );
        }
        _set(params);
}

} //# NAMESPACE CASA - END