eoParam, added specialization for eoValueParam<string>::getValue

FDCStat and FileSnapshot: better error messageing
Scalar fitness: is now a vector of doubles
exercise3.1 added gnuplot again

Don't know about eoCombinedContinue

eo/src/eoCombinedContinue.h

@@ -43,7 +43,7 @@ public:
   /// Define Fitness
   typedef typename EOT::Fitness FitnessType;
 
-  /// Ctor
+  /// Ctor, make sure that at least on continuator is present
   eoCombinedContinue( eoContinue<EOT>& _cont)
     : eoContinue<EOT> ()
   {

eo/src/utils/eoFDCStat.h

@@ -119,14 +119,14 @@ public:
     eoFileSnapshot(_dirname, _frequency, _filename, _delim),
     FDCstat(_FDCstat)
   {
-    eoMonitor::add(FDCstat.theDist());
+    eoFileSnapshot::add(FDCstat.theDist());
-    eoMonitor::add(FDCstat.theFit());
+    eoFileSnapshot::add(FDCstat.theFit());
   }
 
   /** just to be sure the add method is not called further
    */
   virtual void add(const eoParam& _param)
-    { throw runtime_error("Trying to add stats to an eoFDCFileSnapshot"); }
+    { throw runtime_error("eoFDCFileSnapshot::add(). Trying to add stats to an eoFDCFileSnapshot"); }
 
 private:
   eoFDCStat<EOT> & FDCstat;

eo/src/utils/eoFileSnapshot.h

@@ -166,7 +166,7 @@ public :
   {
     if (!dynamic_cast<const eoValueParam<vector<double> >*>(&_param))
     {
-      throw logic_error("eoFileSnapshot: I can only monitor vectors of doubles, sorry");
+      throw logic_error(string("eoFileSnapshot: I can only monitor vectors of doubles, sorry. The offending parameter name = ") + _param.longName());
     }
     eoMonitor::add(_param);
   }

eo/src/utils/eoParam.h

@@ -170,6 +170,16 @@ private :
     ValueType repValue;
 };
 
+/*
+  Specialization for string
+*/
+template <>
+std::string eoValueParam<std::string>::getValue(void) const
+{
+  return repValue;
+}
+
+
 template <>
 void eoValueParam<bool>::setValue(std::string _value)
 {

eo/src/utils/eoScalarFitnessStat.h

@@ -33,11 +33,11 @@
     The fitnesses of a whole population, as a vector
 */
 template <class EOT, class FitT = typename EOT::Fitness>
-class eoScalarFitnessStat : public eoSortedStat<EOT, vector<FitT> >
+class eoScalarFitnessStat : public eoSortedStat<EOT, vector<double> >
 {
 public :
     eoScalarFitnessStat(std::string _description = "FitnessES") :
-      eoSortedStat<EOT,  vector<FitT> >(vector<FitT>(0), _description) {}
+      eoSortedStat<EOT,  vector<double> >(vector<double>(0), _description) {}
 
     virtual void operator()(const vector<const EOT*>& _popPters)
     {

eo/tutorial/Lesson3/exercise3.1.cpp

@@ -318,7 +318,7 @@ void main_function(int argc, char **argv)
 
     // send a scaling command to gnuplot
     gnuMonitor.gnuplotCommand("set yrange [0:500]");
-    /*
+
     // a specific plot monitor for FDC
     // first into a file (it adds everything ti itself
     eoFDCFileSnapshot<Indi> fdcFileSnapshot(fdcStat);
@@ -338,7 +338,7 @@ void main_function(int argc, char **argv)
     fitSnapshot.add(fitStat);
     // and of course add it to the checkpoint
     checkpoint.add(fitSnapshot);
-    */
+    
     // Last type of item the eoCheckpoint can handle: state savers:
     eoState outState;
     // Register the algorithm into the state (so it has something to save!!)