JEigenValues2D.cc

Go to the documentation of this file.

#include <string>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
 
#include "JGeometry2D/JVector2D.hh"
#include "JGeometry2D/JEigenValues2D.hh"
 
#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
/**
 * \file
 *
 * Example program to print eigen values in 2D.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
 
  string  inputFile;
  int     debug;
 
  try { 
 
    JParser<> zap("Example program to print eigen values in 2D.");
    
    zap['f'] = make_field(inputFile);
    zap['d'] = make_field(debug)      = 1;
    
    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }
 
 
  using namespace JPP;
 
  cout.tie(&cerr);
 
 
  vector<JVector2D> buffer;
 
  if (inputFile != "") {
 
    ifstream in(inputFile.c_str());
 
    for (double x, y; in >> x >> y; ) {
      
      buffer.push_back(JVector2D(x,y));
    }
    
    in.close();
  }
 
  JEigenValues2D eigen(buffer.begin(), buffer.end());
 
  cout << "Number of eigen values "  << eigen.getN() << endl;
  cout << FIXED(7,3) << eigen.getX() << endl;
  cout << FIXED(7,3) << eigen.getY() << endl;
}