Added Multi-objective fitness monitoring added support for vector<vector<double> > in eoParam

and made eoFileSnapshot type-safe

eo/src/utils/checkpointing

@@ -12,3 +12,4 @@
 #include <utils/eoStat.h>
 #include <utils/eoScalarFitnessStat.h>
 #include <utils/eoFDCStat.h>
+#include <utils/eoMOFitnessStat.h>

eo/src/utils/eoFileSnapshot.h

@@ -160,6 +160,17 @@ public :
   { return dirname;}
   virtual const string baseFileName()	   // the title for eoGnuPlot
   { return filename;}
+
+  /// add checks whether it is a vector of doubles
+  void add(const eoParam& _param)
+  {
+    if (!dynamic_cast<const eoValueParam<vector<double> >*>(&_param))
+    {
+      throw logic_error("eoFileSnapshot: I can only monitor vectors of doubles, sorry");
+    }
+    eoMonitor::add(_param);
+  }
+
 private :
   std::string dirname;
   unsigned frequency;

eo/src/utils/eoMOFitnessStat.h

@@ -0,0 +1,73 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// eoFitnessStat.h
+// (c) Marc Schoenauer, Maarten Keijzer and GeNeura Team, 2000, 2001
+/*
+    This library 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 2 of the License, or (at your option) any later version.
+
+    This library 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 this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
+             Marc.Schoenauer@polytechnique.fr
+             mkeijzer@dhi.dk
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef _eoFitnessStat_h
+#define _eoFitnessStat_h
+
+#include <utils/eoStat.h>
+
+/**
+    The fitnesses of a whole population, as a vector
+*/
+template <class EOT, class FitT = typename EOT::Fitness>
+class eoFitnessStat : public eoSortedStat<EOT, vector<FitT> >
+{
+public :
+    eoFitnessStat(std::string _description = "AllFitnesses") :
+      eoSortedStat<EOT,  vector<FitT> >(vector<FitT>(0), _description) {}
+
+    virtual void operator()(const vector<const EOT*>& _popPters)
+    {
+      value().resize(_popPters.size());
+      for (unsigned i=0; i<_popPters.size(); i++)
+        value()[i] = _popPters[i]->fitness();
+    }
+};
+
+
+/** For multi-objective fitness, we need to translate a stat<vector<double> >
+    into a vector<stat>, so each objective gets a seperate stat
+*/
+template <class EOT, class PartFitT = double>
+class eoMOFitnessStat : public eoSortedStat<EOT, vector<PartFitT> >
+{
+public :
+  /** Ctor: say what component you want
+   */
+  eoMOFitnessStat(unsigned _objective, std::string _description = "MO-Fitness") :
+    eoSortedStat<EOT,  vector<PartFitT> >(vector<PartFitT>(0), _description),
+    objective(_objective) {}
+
+    virtual void operator()(const vector<const EOT*>& _popPters)
+    {
+      value().resize(_popPters.size());
+      for (unsigned i=0; i<_popPters.size(); i++)
+        value()[i] = _popPters[i]->fitness()[objective];
+    }
+private:
+  unsigned int objective;		   // The objective we're storing
+};
+#endif

eo/src/utils/eoMonitor.h

@@ -46,6 +46,11 @@ class eoMonitor : public eoF<eoMonitor&>
 public :
 
   virtual void lastCall() {}
+
+  /**
+    Adds a parameter to the monitor. It is virtual so you can do some type checking
+    in derived classes if you must.
+  */
   virtual void add(const eoParam& _param) { vec.push_back(&_param); }
 
 

eo/src/utils/eoParam.h

@@ -204,6 +204,43 @@ void eoValueParam<std::pair<double, double> >::setValue(std::string _value)
     is >> repValue.second;
 }
 
+/// Because MSVC does not support partial specialization, the vector is a vector of doubles, not a T
+template <>
+std::string eoValueParam<std::vector<std::vector<double> > >::getValue(void) const
+{
+    std::ostrstream os;
+    os << repValue.size() << ' ';
+    for (unsigned i = 0; i < repValue.size(); ++i)
+    {
+      os << repValue[i].size() << ' ';
+      std::copy(repValue[i].begin(), repValue[i].end(), std::ostream_iterator<double>(os, " "));
+    }
+
+    os << std::ends;
+    return os.str();
+}
+
+/// Because MSVC does not support partial specialization, the vector is a vector of doubles, not a T
+template <>
+void eoValueParam<std::vector<std::vector<double> > >::setValue(std::string _value)
+{
+    std::istrstream is(_value.c_str());
+    unsigned sz;
+    is >> sz;
+    repValue.resize(sz);
+
+    for (unsigned i = 0; i < repValue.size(); ++i)
+    {
+      unsigned sz2;
+      is >> sz2;
+      repValue[i].resize(sz2);
+      for (unsigned j = 0; j < sz2; ++j)
+      {
+        is >> repValue[i][j];
+      }
+    }
+}
+
 /// Because MSVC does not support partial specialization, the vector is a double, not a T
 template <>
 std::string eoValueParam<std::vector<double> >::getValue(void) const