models_howto.py
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#! /usr/bin/env python
# ==========================================================================
# Scope
#
# This script provides an example for creating and handling models with
# GammaLib
#
# Usage
# ./model_howto.py
#
# -------------------------------------------------------------------------
#
# Copyright (C) 2013 Juergen Knoedlseder
#
# 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# ==========================================================================
import gammalib
# =========================================== #
# Create a model container filled with models #
# =========================================== #
def create_models():
"""
"""
# Create model container
models = gammalib.GModels()
# Create a power law model for the Crab
crabdir = gammalib.GSkyDir()
crabdir.radec_deg(83.6331, 22.0145)
spatial = gammalib.GModelSpatialPointSource(crabdir)
energy = gammalib.GEnergy(100.0, "MeV")
spectral = gammalib.GModelSpectralPlaw(5.7e-16, -2.48, energy)
model = gammalib.GModelSky(spatial, spectral)
models.append(model)
# Return models
return models
# ======================== #
# Main routine entry point #
# ======================== #
if __name__ == '__main__':
"""
Example script for creating and handling model.
"""
# Dump header
print("")
print("******************************")
print("* Example for model handling *")
print("******************************")
print("")
# Create XML document
models = create_models()
print(models)