DisplayUtils.h

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio and University of Montreal
//

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//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
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// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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/* *******************************************************      
   * $Id: DisplayUtils.h,v 1.5 2004/07/21 16:30:51 chrish42 Exp $
   * AUTHORS: Pascal Vincent & Yoshua Bengio
   * This file is part of the PLearn library.
   ******************************************************* */


#ifndef DISPLAYUTILS_INC
#define DISPLAYUTILS_INC

#include "GhostScript.h"
#include <plearn/math/Mat.h>
#include "Gnuplot.h"
#include <plearn_learners/generic/Learner.h>
#include <plearn/var/Func.h>

namespace PLearn {
using namespace std;


void displayHistogram(Gnuplot& gs, Mat dataColumn,
                      int n_bins=0, Vec* bins=0, 
                      bool regular_bins=false,
                      bool normalized=false, string extra_args="");


  void displayVarGraph(const VarArray& outputs, bool display_values=false, real boxwidth=100, const char* the_filename=0, bool must_wait=true, VarArray display0_only_these=VarArray());
  void displayFunction(Func f, bool display_values=false, bool display_differentiation=false, real boxwidth=100, const char* the_filename=0, bool must_wait=true);



Mat compute2dGridOutputs(Learner& learner, real min_x=-1, real max_x=+1, real min_y=-1, real max_y=+1, 
                         int length=200, int width=200, real singleoutput_threshold=0.);

void displayPoints(GhostScript& gs, Mat data, real radius, bool color=false);

  void displayDecisionSurface(GhostScript& gs, real destx, real desty, real destwidth, real destheight, 
                              Learner& learner, Mat trainset,
                              Vec svindexes=Vec(), Vec outlierindexes=Vec(), int nextsvindex=-1,
                              real min_x=-1, real max_x=+1, real min_y=-1, real max_y=+1,
                              real radius=0.05, 
                              int nx=200, int ny=200);

} // end of namespace PLearn

#endif

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