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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkParticleSwarmOptimizerSAXWriter.h"
#include "itksys/SystemTools.hxx"
namespace itk
{
/**
* Check that whether the file with given name is writable.
*/
int ParticleSwarmOptimizerSAXWriter::CanWriteFile( const char* name )
{
std::ofstream ofs( name );
int yes = ofs.is_open();
if (yes)
{
ofs.close();
}
return yes;
}
/**
* Method for performing XML file generation from the input object.
*/
int ParticleSwarmOptimizerSAXWriter::WriteFile()
{
try
{
if ( !this->CanWriteFile( this->m_Filename.c_str() ) )
{
ExceptionObject e( __FILE__, __LINE__ );
std::string message = "Cannot write to ";
message += this->m_Filename;
message += "!\n";
e.SetDescription( message.c_str() );
throw e;
}
if ( this->m_InputObject == 0 )
{
itkExceptionMacro( "Object to be written is null!\n" );
}
std::ofstream ofs( this->m_Filename.c_str() );
// start the tag 'optimizer'
ofs << "<optimizer type=\"ParticleSwarmOptimizer\"";
ofs << " NumberOfParticles=\"" << this->m_InputObject->GetNumberOfParticles() << "\"";
ofs << " MaximumNumberOfIterations=\"" << this->m_InputObject->GetMaximalNumberOfIterations() << "\"";
ofs << " InertiaCoefficient=\"" << this->m_InputObject->GetInertiaCoefficient() << "\"";
ofs << " GlobalCoefficient=\"" << this->m_InputObject->GetGlobalCoefficient() << "\"";
ofs << " PersonalCoefficient=\"" << this->m_InputObject->GetPersonalCoefficient() << "\"";
ofs << " FunctionConvergenceTolerance=\"" << this->m_InputObject->GetFunctionConvergenceTolerance() << "\"";
ofs << " ConvergedPercentageToStop=\"" << this->m_InputObject->GetPercentageParticlesConverged() << "\"";
ofs << ">";
ofs << "\n";
//
ParticleSwarmOptimizer::ParameterBoundsType bounds = this->m_InputObject->GetParameterBounds();
// write the lower bound
ofs << " <bound id=\"lower\"";
ofs << " value=\"";
for ( size_t i = 0; i < bounds.size(); i++ )
{
ofs << " " << bounds[i].first;
}
ofs << "\"";
ofs << "/>";
ofs << "\n";
// write the upper bound
ofs << " <bound id=\"upper\"";
ofs << " value=\"";
for ( size_t i = 0; i < bounds.size(); i++ )
{
ofs << " " << bounds[i].second;
}
ofs << "\"";
ofs << "/>";
ofs << "\n";
// write the ParametersConvergenceTolerance
ofs << " <ParametersConvergenceTolerance>";
Array<double> ptols = this->m_InputObject->GetParametersConvergenceTolerance();
// Note: The data-cast to unsigned int is required
// because itk::Array only supports 'unsigned int' number of elements.
for ( unsigned int i = 0; i < ptols.GetSize(); i++ )
{
ofs << " " << ptols[ i ];
}
ofs << "</ParametersConvergenceTolerance>";
ofs << "\n";
// close the tag 'optimizer'
ofs << "</optimizer>";
ofs << "\n";
ofs.close();
return 1;
}
catch (...)
{
return 0;
}
}
} // namespace itk
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