fixed stuff again

git-svn-id: svn+ssh://svn.pointclouds.org/pcl/trunk@8286 a9d63959-f2ad-4865-b262-bf0e56cfafb6

ml/include/pcl/ml/impl/dt/decision_tree_trainer.hpp

@@ -49,6 +49,7 @@ pcl::DecisionTreeTrainer<FeatureType, DataSet, LabelType, ExampleIndex, NodeType
   , data_set_ ()
   , label_data_ ()
   , examples_ ()
+  , decision_tree_trainer_data_provider_ ()
   , random_features_at_split_node_(false)
 {
 
@@ -77,8 +78,10 @@ pcl::DecisionTreeTrainer<FeatureType, DataSet, LabelType, ExampleIndex, NodeType
   NodeType root_node; 
   tree.setRoot (root_node);
 
-  if (decision_tree_trainer_data_provider_ != 0)
+  if (decision_tree_trainer_data_provider_)
   {
+    std::cerr << "use decision_tree_trainer_data_provider_" << std::endl;
+
     decision_tree_trainer_data_provider_->getDatasetAndLabels (data_set_, label_data_, examples_);
     trainDecisionTreeNode (features, examples_, label_data_, max_tree_depth_, tree.getRoot ());
     label_data_.clear ();
@@ -105,7 +108,7 @@ pcl::DecisionTreeTrainer<FeatureType, DataSet, LabelType, ExampleIndex, NodeType
   const size_t num_of_examples = examples.size ();
   if (num_of_examples == 0)
   {
-    PCL_ERROR ("Reached invalid point in decision tree training");
+    PCL_ERROR ("Reached invalid point in decision tree training: Number of examples is 0!");
     return;
   };
 
@@ -217,7 +220,7 @@ pcl::DecisionTreeTrainer<FeatureType, DataSet, LabelType, ExampleIndex, NodeType
                                             flags,
                                             best_feature_threshold,
                                             branch_indices);
- } 
+  } 
 
   stats_estimator_->computeAndSetNodeStats (data_set_, examples, label_data, node);
 

ml/include/pcl/ml/multi_channel_2d_comparison_feature_handler.h

@@ -279,6 +279,9 @@ namespace pcl
       else
         scale = static_cast<float> (data_set (example.data_set_id, center_col_index, center_row_index)[SCALE_CHANNEL]);
 
+
+
+
       const size_t p1_col = static_cast<size_t> (scale * feature.p1.x + center_col_index);
       const size_t p1_row = static_cast<size_t> (scale * feature.p1.y + center_row_index);
 

ml/include/pcl/ml/multi_channel_2d_data_set.h

@@ -68,6 +68,16 @@ namespace pcl
         width_ = width;
         height_ = height;
       }
+
+      /** \brief Clears the internal data storage and sets width and height to 0.
+        */
+      void
+      clear ()
+      {
+        width_ = 0;
+        height_ = 0;
+        data_.clear ();
+      }
 
       /** \brief Returns a pointer to the internal data at the specified location.
         * \param[in] col_index The column index.
@@ -157,6 +167,13 @@ namespace pcl
         }
       }
 
+      /** \brief Releases the data stored in the data set. */
+      void
+      clear ()
+      {
+        releaseDataSet ();
+      }
+
       /** \brief Returns a pointer to the specified data block at the specified location.
         * \param[in] data_set_id The index of the data block.
         * \param[in] col The column of the desired location.