/usr/include/roboptim/core/visualization/gnuplot.hh is in libroboptim-core-dev 2.0-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// This file is part of the roboptim.
//
// roboptim is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// roboptim 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with roboptim. If not, see <http://www.gnu.org/licenses/>.
#ifndef ROBOPTIM_CORE_VISUALIZATION_GNUPLOT_HH
# define ROBOPTIM_CORE_VISUALIZATION_GNUPLOT_HH
# include <roboptim/core/sys.hh>
# include <roboptim/core/debug.hh>
# include <roboptim/core/function.hh>
# include <vector>
# define EIGEN_YES_I_KNOW_SPARE_MODULE_IS_NOT_STABLE_YET
# include <Eigen/Core>
# include <Eigen/Sparse>
# include <roboptim/core/function.hh>
# include <roboptim/core/visualization/fwd.hh>
# include <roboptim/core/visualization/gnuplot-commands.hh>
namespace roboptim
{
namespace visualization
{
/// \addtogroup roboptim_visualization
/// @{
/// \brief Normalize floating point number output.
/// Normalization is done on all displayed floating
/// point numbers to get a consistent output.
double normalize (const double& x);
/// \brief Apply normalize to each element of a matrix.
Eigen::MatrixXd
normalize (const Eigen::MatrixXd& x);
/// \brief Apply normalize to each element of a container.
template <typename T>
T normalize (const T& x);
inline double
normalize (const double& x)
{
if (std::fabs (x) < 1e-8)
return 0.;
return x;
}
inline Eigen::MatrixXd
normalize (const Eigen::MatrixXd& x)
{
Eigen::MatrixXd res (x.rows (), x.cols ());
for (Function::size_type i = 0; i < x.rows (); ++i)
for (Function::size_type j = 0; j < x.cols (); ++j)
res (i, j) = normalize (x (i, j));
return res;
}
template <typename T>
T
normalize (const T& x)
{
T res (x.size ());
for (Function::size_type i = 0; i < x.size (); ++i)
res[i] = normalize (x[i]);
return res;
}
/// \brief Gnuplot script
///
/// This class gathers Gnuplot commands
/// to build a complete Gnuplot script.
/// Gnuplot commands can be inserted through
/// this object through the \c << operator
/// and this object can be put into an output stream
/// using the \c << operator.
class ROBOPTIM_DLLAPI Gnuplot
{
public:
~Gnuplot () throw ();
/// \brief Instanciate a Gnuplot without setting a term.
/// \return Gnuplot instance
static Gnuplot make_gnuplot () throw ()
{
return Gnuplot ();
}
/// \brief Instanciate a Gnuplot suitable for interactive use.
///
/// This initializes a persistent Gnuplot instance which are
/// suitable for user interaction.
/// \return Gnuplot instance
static Gnuplot make_interactive_gnuplot () throw ()
{
Gnuplot gp;
gp.push_command (gnuplot::set ("terminal", "wxt persist"));
return gp;
}
/// \brief Add a new Gnuplot command to the script.
/// \param cmd command that will be pushed
void push_command (gnuplot::Command cmd) throw ();
/// \brief Display the Gnuplot script on the specified output stream.
///
/// \param o output stream used for display
/// \return output stream
std::ostream& print (std::ostream&) const throw ();
Gnuplot& operator << (gnuplot::Command) throw ();
protected:
/// \brief Default constructor can not be called directly.
///
/// Use of the named constructor (see static methods) to
/// instantiate this class.
explicit Gnuplot () throw ();
private:
/// \brief Vector of commands.
std::vector<gnuplot::Command> commands_;
};
/// Example shows simple Gnuplot visualization.
/// \example visualization-gnuplot-simple.cc
/// Example shows function display with Gnuplot.
/// \example visualization-gnuplot-function.cc
/// \brief Override operator<< to handle Gnuplot command insertion.
///
/// \tparam Gnuplot command type
/// \param gp Gnuplot script that will receive the new command
/// \param t new Gnuplot command.
/// \return modified Gnuplot script
template <typename T>
Gnuplot& operator<< (Gnuplot& gp, T t)
{
gp.push_command (t ());
return gp;
}
/// @}
/// \brief Override operator<< to handle Gnuplot script display.
///
/// \param o output stream used for display
/// \param gp Gnuplot script to be displayed
/// \return output stream
ROBOPTIM_DLLAPI std::ostream& operator<< (std::ostream&, const Gnuplot& gp);
} // end of namespace visualization.
} // end of namespace roboptim.
#endif //! ROBOPTIM_CORE_VISUALIZATION_GNUPLOT_HH
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