ctlike.cpp
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/***************************************************************************
* ctlike - CTA maximum likelihood tool *
* ----------------------------------------------------------------------- *
* copyright (C) 2010 by Jurgen Knodlseder *
* ----------------------------------------------------------------------- *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/**
* @file ctlike.cpp
* @brief CTA maximum likelihood tool implementation
* @author J. Knodlseder
*/
/* __ Includes ___________________________________________________________ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include "ctlike.hpp"
#include "GTools.hpp"
/*==========================================================================
= =
= Constructors/destructors =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Void constructor
***************************************************************************/
ctlike::ctlike(void) : GApplication(CTLIKE_NAME, CTLIKE_VERSION)
{
// Initialise members
init_members();
// Return
return;
}
/***********************************************************************//**
* @brief Command line constructor
*
* @param[in] argc Number of arguments in command line.
* @param[in] argv Array of command line arguments.
***************************************************************************/
ctlike::ctlike(int argc, char *argv[]) :
GApplication(CTLIKE_NAME, CTLIKE_VERSION, argc, argv)
{
// Initialise members
init_members();
// Return
return;
}
/***********************************************************************//**
* @brief Destructor
***************************************************************************/
ctlike::~ctlike(void)
{
// Free members
free_members();
// Return
return;
}
/*==========================================================================
= =
= Operators =
= =
==========================================================================*/
/*==========================================================================
= =
= Public methods =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Run maximum likelihood analysis
***************************************************************************/
int ctlike::run(void)
{
// Initialise return code
int rc = 0;
// Get standard parameters
m_method = toupper(par("method")->value());
m_caldb = par("caldb")->value();
m_irf = par("irf")->value();
m_srcmdl = par("srcmdl")->value();
m_outmdl = par("outmdl")->value();
m_models = GModels(m_srcmdl);
// Set fixed parameters
m_opt = new GOptimizerLM;
// Set optimizer parameters
((GOptimizerLM*)m_opt)->max_iter(m_max_iter);
// Branch on method
if (m_method == "UNBINNED")
rc = unbinned();
else
rc = binned();
// Write result as XML model
if (toupper(m_outmdl) != "NONE")
m_models.save(m_outmdl);
// Dump results
std::cout << m_models << std::endl;
// Free optimizer
delete m_opt;
// Return
return rc;
}
/***********************************************************************//**
* @brief Perform unbinned maximum likelihood analysis
***************************************************************************/
int ctlike::unbinned(void)
{
// Initialise return code
int rc = 0;
// Get parameters
std::string evfile = par("evfile")->value();
// Declare observations
GCTAObservation run;
// Setup ROI covered by data
GCTAInstDir instDir;
GCTARoi roi;
instDir.radec_deg(117.02, -33.35); // Adapt to file
roi.centre(instDir);
roi.radius(2.5);
// Setup energy range covered by data
GEnergy emin;
GEnergy emax;
emin.TeV(0.02);
emax.TeV(100.0);
// Setup time range covered by data
GTime tstart;
GTime tstop;
tstart.met(0.0);
tstop.met(10000.0);
// Load data and response and set ROI, energy range and time range
// for analysis
run.load_unbinned(evfile);
run.response(m_irf, m_caldb);
run.roi(roi);
run.gti()->add(tstart, tstop);
run.ebounds()->append(emin, emax);
m_obs.append(run);
// Setup models for optimizing
m_obs.models(m_models);
// Perform LM optimization
m_obs.optimize(*m_opt);
// Get models back
m_models = *(m_obs.models());
// Return
return rc;
}
/***********************************************************************//**
* @brief Perform binned maximum likelihood analysis
***************************************************************************/
int ctlike::binned(void)
{
// Initialise return code
int rc = 0;
// Get parameters
std::string cntmap = par("cntmap")->value();
// Declare observations
GCTAObservation run;
// Load binned CTA observation
run.load_binned(cntmap);
run.response(m_irf, m_caldb);
m_obs.append(run);
// Setup models for optimizing
m_obs.models(m_models);
// Perform LM optimization
m_obs.optimize(*m_opt);
// Get models back
m_models = *(m_obs.models());
// Return
return rc;
}
/*==========================================================================
= =
= Private methods =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Initialise class members
***************************************************************************/
void ctlike::init_members(void)
{
// Initialise members
m_method.clear();
m_caldb.clear();
m_irf.clear();
m_srcmdl.clear();
m_outmdl.clear();
m_models.clear();
//m_obs.clear(); //!< NOT YET IMPLEMENTED
m_max_iter = 1000;
m_opt = NULL;
// Return
return;
}
/***********************************************************************//**
* @brief Delete class members
***************************************************************************/
void ctlike::free_members(void)
{
// Free members
delete m_opt;
// Return
return;
}