diff --git a/Modules/PlanarFigure/DataManagement/mitkPlanarFigure.cpp b/Modules/PlanarFigure/DataManagement/mitkPlanarFigure.cpp
index 002b087518..81fadd93a3 100644
--- a/Modules/PlanarFigure/DataManagement/mitkPlanarFigure.cpp
+++ b/Modules/PlanarFigure/DataManagement/mitkPlanarFigure.cpp
@@ -1,764 +1,833 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 
 #include "mitkPlanarFigure.h"
 #include "mitkGeometry2D.h"
 #include "mitkProperties.h"
 #include <mitkProportionalTimeGeometry.h>
 
 #include "algorithm"
 
 
 mitk::PlanarFigure::PlanarFigure()
 : m_SelectedControlPoint( -1 ),
   m_PreviewControlPointVisible( false ),
   m_FigurePlaced( false ),
   m_Geometry2D( NULL ),
   m_PolyLineUpToDate(false),
   m_HelperLinesUpToDate(false),
   m_FeaturesUpToDate(false),
   m_FeaturesMTime( 0 )
 {
 
 
   m_HelperPolyLinesToBePainted = BoolContainerType::New();
 
   m_DisplaySize.first = 0.0;
   m_DisplaySize.second = 0;
 
   this->SetProperty( "closed", mitk::BoolProperty::New( false ) );
 
   // Currently only single-time-step geometries are supported
   this->InitializeTimeGeometry( 1 );
 }
 
 
 mitk::PlanarFigure::~PlanarFigure()
 {
 }
 
 
 mitk::PlanarFigure::PlanarFigure(const Self& other)
   : BaseData(other),
     m_ControlPoints(other.m_ControlPoints),
     m_NumberOfControlPoints(other.m_NumberOfControlPoints),
     m_SelectedControlPoint(other.m_SelectedControlPoint),
     m_PolyLines(other.m_PolyLines),
     m_HelperPolyLines(other.m_HelperPolyLines),
     m_HelperPolyLinesToBePainted(other.m_HelperPolyLinesToBePainted->Clone()),
     m_PreviewControlPoint(other.m_PreviewControlPoint),
     m_PreviewControlPointVisible(other.m_PreviewControlPointVisible),
     m_FigurePlaced(other.m_FigurePlaced),
     m_Geometry2D(other.m_Geometry2D), // do not clone since SetGeometry2D() doesn't clone either
     m_PolyLineUpToDate(other.m_PolyLineUpToDate),
     m_HelperLinesUpToDate(other.m_HelperLinesUpToDate),
     m_FeaturesUpToDate(other.m_FeaturesUpToDate),
     m_Features(other.m_Features),
     m_FeaturesMTime(other.m_FeaturesMTime),
     m_DisplaySize(other.m_DisplaySize)
 {
 }
 
 
 void mitk::PlanarFigure::SetGeometry2D( mitk::Geometry2D *geometry )
 {
   this->SetGeometry( geometry );
   m_Geometry2D = dynamic_cast<Geometry2D *>(GetGeometry(0));//geometry;
 }
 
 
 const mitk::Geometry2D *mitk::PlanarFigure::GetGeometry2D() const
 {
   return m_Geometry2D;
 }
 
 
 bool mitk::PlanarFigure::IsClosed() const
 {
   mitk::BoolProperty* closed = dynamic_cast< mitk::BoolProperty* >( this->GetProperty( "closed" ).GetPointer() );
   if ( closed != NULL )
   {
     return closed->GetValue();
   }
   return false;
 }
 
 
 void mitk::PlanarFigure::PlaceFigure( const mitk::Point2D& point )
 {
   for ( unsigned int i = 0; i < this->GetNumberOfControlPoints(); ++i )
   {
     m_ControlPoints.push_back( this->ApplyControlPointConstraints( i, point ) );
   }
 
   m_FigurePlaced = true;
   m_SelectedControlPoint = 1;
 }
 
 
 bool mitk::PlanarFigure::AddControlPoint( const mitk::Point2D& point, int position )
 {
   // if we already have the maximum number of control points, do nothing
   if ( m_NumberOfControlPoints < this->GetMaximumNumberOfControlPoints() )
   {
     // if position has not been defined or position would be the last control point, just append the new one
     // we also append a new point if we click onto the line between the first two control-points if the second control-point is selected
     // -> special case for PlanarCross
     if ( position == -1 || position > (int)m_NumberOfControlPoints-1 || (position == 1 && m_SelectedControlPoint == 2) )
     {
       if ( m_ControlPoints.size() > this->GetMaximumNumberOfControlPoints()-1 )
       {
         // get rid of deprecated control points in the list. This is necessary
         // as ::ResetNumberOfControlPoints() only sets the member, does not resize the list!
         m_ControlPoints.resize( this->GetNumberOfControlPoints() );
       }
 
       m_ControlPoints.push_back( this->ApplyControlPointConstraints( m_NumberOfControlPoints, point ) );
       m_SelectedControlPoint = m_NumberOfControlPoints;
     }
     else
     {
       // insert the point at the given position and set it as selected point
       ControlPointListType::iterator iter = m_ControlPoints.begin() + position;
       m_ControlPoints.insert( iter, this->ApplyControlPointConstraints( position, point ) );
       for( unsigned int i = 0; i < m_ControlPoints.size(); ++i )
       {
         if( point == m_ControlPoints.at(i) )
         {
           m_SelectedControlPoint = i;
         }
       }
     }
 
     // polylines & helperpolylines need to be repainted
     m_PolyLineUpToDate = false;
     m_HelperLinesUpToDate = false;
     m_FeaturesUpToDate = false;
 
     // one control point more
     ++m_NumberOfControlPoints;
     return true;
   }
   else
   {
     return false;
   }
 }
 
 
 bool mitk::PlanarFigure::SetControlPoint( unsigned int index, const Point2D& point, bool createIfDoesNotExist )
 {
   bool controlPointSetCorrectly = false;
   if (createIfDoesNotExist)
   {
     if ( m_NumberOfControlPoints <= index )
     {
       m_ControlPoints.push_back( this->ApplyControlPointConstraints( index, point ) );
       m_NumberOfControlPoints++;
     }
     else
     {
       m_ControlPoints.at( index ) = this->ApplyControlPointConstraints( index, point );
     }
     controlPointSetCorrectly = true;
   }
   else if ( index < m_NumberOfControlPoints )
   {
     m_ControlPoints.at( index ) = this->ApplyControlPointConstraints( index, point );
     controlPointSetCorrectly = true;
   }
   else
   {
     return false;
   }
 
   if ( controlPointSetCorrectly )
   {
     m_PolyLineUpToDate = false;
     m_HelperLinesUpToDate = false;
     m_FeaturesUpToDate = false;
   }
 
   return controlPointSetCorrectly;
 }
 
 
 bool mitk::PlanarFigure::SetCurrentControlPoint( const Point2D& point )
 {
   if ( (m_SelectedControlPoint < 0) || (m_SelectedControlPoint >= (int)m_NumberOfControlPoints) )
   {
     return false;
   }
 
   return this->SetControlPoint(m_SelectedControlPoint, point, false);
 }
 
 
 unsigned int mitk::PlanarFigure::GetNumberOfControlPoints() const
 {
   return m_NumberOfControlPoints;
 }
 
 
 bool mitk::PlanarFigure::SelectControlPoint( unsigned int index )
 {
   if ( index < this->GetNumberOfControlPoints() )
   {
     m_SelectedControlPoint = index;
     return true;
   }
   else
   {
     return false;
   }
 }
 
 
 bool mitk::PlanarFigure::DeselectControlPoint()
 {
   bool wasSelected = ( m_SelectedControlPoint != -1);
 
   m_SelectedControlPoint = -1;
 
   return wasSelected;
 }
 
 void mitk::PlanarFigure::SetPreviewControlPoint( const Point2D& point )
 {
   m_PreviewControlPoint = point;
   m_PreviewControlPointVisible = true;
 }
 
 void mitk::PlanarFigure::ResetPreviewContolPoint()
 {
   m_PreviewControlPointVisible = false;
 }
 
 mitk::Point2D mitk::PlanarFigure::GetPreviewControlPoint()
 {
   return m_PreviewControlPoint;
 }
 
 bool mitk::PlanarFigure::IsPreviewControlPointVisible()
 {
   return m_PreviewControlPointVisible;
 }
 
 mitk::Point2D mitk::PlanarFigure::GetControlPoint( unsigned int index ) const
 {
   if ( index < m_NumberOfControlPoints )
   {
     return m_ControlPoints.at( index );
   }
 
   itkExceptionMacro( << "GetControlPoint(): Invalid index!" );
 }
 
 
 mitk::Point3D mitk::PlanarFigure::GetWorldControlPoint( unsigned int index ) const
 {
   Point3D point3D;
   if ( (m_Geometry2D != NULL) && (index < m_NumberOfControlPoints) )
   {
     m_Geometry2D->Map( m_ControlPoints.at( index ), point3D );
     return point3D;
   }
 
   itkExceptionMacro( << "GetWorldControlPoint(): Invalid index!" );
 }
 
 
 const mitk::PlanarFigure::PolyLineType
 mitk::PlanarFigure::GetPolyLine(unsigned int index)
 {
   mitk::PlanarFigure::PolyLineType polyLine;
   if ( index > m_PolyLines.size() || !m_PolyLineUpToDate )
     {
       this->GeneratePolyLine();
       m_PolyLineUpToDate = true;
     }
 
   return m_PolyLines.at( index );;
 }
 
 
 const mitk::PlanarFigure::PolyLineType
 mitk::PlanarFigure::GetPolyLine(unsigned int index) const
 {
   return m_PolyLines.at( index );
 }
 
 void mitk::PlanarFigure::ClearPolyLines()
 {
   for ( std::vector<PolyLineType>::size_type i=0; i<m_PolyLines.size(); i++ )
   {
     m_PolyLines.at( i ).clear();
   }
   m_PolyLineUpToDate = false;
 }
 
 const mitk::PlanarFigure::PolyLineType mitk::PlanarFigure::GetHelperPolyLine( unsigned int index,
                                                                              double mmPerDisplayUnit,
                                                                              unsigned int displayHeight )
 {
   mitk::PlanarFigure::PolyLineType helperPolyLine;
   if ( index < m_HelperPolyLines.size() )
   {
     // m_HelperLinesUpToDate does not cover changes in zoom-level, so we have to check previous values of the
     // two parameters as well
     if ( !m_HelperLinesUpToDate || m_DisplaySize.first != mmPerDisplayUnit || m_DisplaySize.second != displayHeight )
     {
       this->GenerateHelperPolyLine(mmPerDisplayUnit, displayHeight);
       m_HelperLinesUpToDate = true;
 
       // store these parameters to be able to check next time if somebody zoomed in or out
       m_DisplaySize.first = mmPerDisplayUnit;
       m_DisplaySize.second = displayHeight;
     }
 
     helperPolyLine = m_HelperPolyLines.at(index);
   }
 
   return helperPolyLine;
 }
 
 void mitk::PlanarFigure::ClearHelperPolyLines()
 {
   for ( std::vector<PolyLineType>::size_type i=0; i<m_HelperPolyLines.size(); i++ )
   {
     m_HelperPolyLines.at(i).clear();
   }
   m_HelperLinesUpToDate = false;
 }
 
 /** \brief Returns the number of features available for this PlanarFigure
 * (such as, radius, area, ...). */
 unsigned int mitk::PlanarFigure::GetNumberOfFeatures() const
 {
   return m_Features.size();
 }
 
 
 const char *mitk::PlanarFigure::GetFeatureName( unsigned int index ) const
 {
   if ( index < m_Features.size() )
   {
     return m_Features[index].Name.c_str();
   }
   else
   {
     return NULL;
   }
 }
 
 
 const char *mitk::PlanarFigure::GetFeatureUnit( unsigned int index ) const
 {
   if ( index < m_Features.size() )
   {
     return m_Features[index].Unit.c_str();
   }
   else
   {
     return NULL;
   }
 }
 
 
 double mitk::PlanarFigure::GetQuantity( unsigned int index ) const
 {
   if ( index < m_Features.size() )
   {
     return m_Features[index].Quantity;
   }
   else
   {
     return 0.0;
   }
 }
 
 
 bool mitk::PlanarFigure::IsFeatureActive( unsigned int index ) const
 {
   if ( index < m_Features.size() )
   {
     return m_Features[index].Active;
   }
   else
   {
     return false;
   }
 }
 
 bool mitk::PlanarFigure::IsFeatureVisible( unsigned int index ) const
 {
   if ( index < m_Features.size() )
   {
     return m_Features[index].Visible;
   }
   else
   {
     return false;
   }
 }
 
 void mitk::PlanarFigure::SetFeatureVisible( unsigned int index, bool visible )
 {
   if ( index < m_Features.size() )
   {
     m_Features[index].Visible = visible;
   }
 }
 
 
 void mitk::PlanarFigure::EvaluateFeatures()
 {
   if ( !m_FeaturesUpToDate || !m_PolyLineUpToDate )
   {
     if ( !m_PolyLineUpToDate )
     {
       this->GeneratePolyLine();
     }
 
     this->EvaluateFeaturesInternal();
 
     m_FeaturesUpToDate = true;
   }
 }
 
 
 void mitk::PlanarFigure::UpdateOutputInformation()
 {
   // Bounds are NOT calculated here, since the Geometry2D defines a fixed
   // frame (= bounds) for the planar figure.
   Superclass::UpdateOutputInformation();
   this->GetTimeGeometry()->Update();
 }
 
 
 void mitk::PlanarFigure::SetRequestedRegionToLargestPossibleRegion()
 {
 }
 
 
 bool mitk::PlanarFigure::RequestedRegionIsOutsideOfTheBufferedRegion()
 {
   return false;
 }
 
 
 bool mitk::PlanarFigure::VerifyRequestedRegion()
 {
   return true;
 }
 
 
 void mitk::PlanarFigure::SetRequestedRegion(const itk::DataObject * /*data*/ )
 {
 
 }
 
 
 void mitk::PlanarFigure::ResetNumberOfControlPoints( int numberOfControlPoints )
 {
   // DO NOT resize the list here, will cause crash!!
   m_NumberOfControlPoints = numberOfControlPoints;
 }
 
 
 mitk::Point2D mitk::PlanarFigure::ApplyControlPointConstraints( unsigned int /*index*/, const Point2D& point )
 {
   if ( m_Geometry2D ==  NULL )
   {
     return point;
   }
 
   Point2D indexPoint;
   m_Geometry2D->WorldToIndex( point, indexPoint );
 
   BoundingBox::BoundsArrayType bounds = m_Geometry2D->GetBounds();
   if ( indexPoint[0] < bounds[0] ) { indexPoint[0] = bounds[0]; }
   if ( indexPoint[0] > bounds[1] ) { indexPoint[0] = bounds[1]; }
   if ( indexPoint[1] < bounds[2] ) { indexPoint[1] = bounds[2]; }
   if ( indexPoint[1] > bounds[3] ) { indexPoint[1] = bounds[3]; }
 
   Point2D constrainedPoint;
   m_Geometry2D->IndexToWorld( indexPoint, constrainedPoint );
 
   return constrainedPoint;
 }
 
 
 unsigned int mitk::PlanarFigure::AddFeature( const char *featureName, const char *unitName )
 {
   unsigned int index = m_Features.size();
 
   Feature newFeature( featureName, unitName );
   m_Features.push_back( newFeature );
 
   return index;
 }
 
 
 void mitk::PlanarFigure::SetFeatureName( unsigned int index, const char *featureName )
 {
   if ( index < m_Features.size() )
   {
     m_Features[index].Name = featureName;
   }
 }
 
 
 void mitk::PlanarFigure::SetFeatureUnit( unsigned int index, const char *unitName )
 {
   if ( index < m_Features.size() )
   {
     m_Features[index].Unit = unitName;
   }
 }
 
 
 void mitk::PlanarFigure::SetQuantity( unsigned int index, double quantity )
 {
   if ( index < m_Features.size() )
   {
     m_Features[index].Quantity = quantity;
   }
 }
 
 
 void mitk::PlanarFigure::ActivateFeature( unsigned int index )
 {
   if ( index < m_Features.size() )
   {
     m_Features[index].Active = true;
   }
 }
 
 
 void mitk::PlanarFigure::DeactivateFeature( unsigned int index )
 {
   if ( index < m_Features.size() )
   {
     m_Features[index].Active = false;
   }
 }
 
 void mitk::PlanarFigure::InitializeTimeGeometry( unsigned int timeSteps )
 {
   mitk::Geometry2D::Pointer geometry2D = mitk::Geometry2D::New();
   geometry2D->Initialize();
 
   if ( timeSteps > 1 )
   {
     mitk::ScalarType timeBounds[] = {0.0, 1.0};
     geometry2D->SetTimeBounds( timeBounds );
   }
 
   // The geometry is propagated automatically to all time steps,
   // if EvenlyTimed is true...
   ProportionalTimeGeometry::Pointer timeGeometry = ProportionalTimeGeometry::New();
   timeGeometry->Initialize(geometry2D, timeSteps);
   SetTimeGeometry(timeGeometry);
 }
 
 
 void mitk::PlanarFigure::PrintSelf( std::ostream& os, itk::Indent indent) const
 {
   Superclass::PrintSelf( os, indent );
   os << indent << this->GetNameOfClass() << ":\n";
 
   if (this->IsClosed())
     os << indent << "This figure is closed\n";
   else
     os << indent << "This figure is not closed\n";
   os << indent << "Minimum number of control points: " << this->GetMinimumNumberOfControlPoints() << std::endl;
   os << indent << "Maximum number of control points: " << this->GetMaximumNumberOfControlPoints() << std::endl;
   os << indent << "Current number of control points: " << this->GetNumberOfControlPoints() << std::endl;
   os << indent << "Control points:" << std::endl;
 
   for ( unsigned int i = 0; i < this->GetNumberOfControlPoints(); ++i )
   {
     //os << indent.GetNextIndent() << i << ": " << m_ControlPoints->ElementAt( i ) << std::endl;
     os << indent.GetNextIndent() << i << ": " << m_ControlPoints.at( i ) << std::endl;
   }
   os << indent << "Geometry:\n";
   this->GetGeometry2D()->Print(os, indent.GetNextIndent());
 }
 
 
 unsigned short mitk::PlanarFigure::GetPolyLinesSize()
 {
   if ( !m_PolyLineUpToDate )
   {
     this->GeneratePolyLine();
     m_PolyLineUpToDate = true;
   }
   return m_PolyLines.size();
 }
 
 
 unsigned short mitk::PlanarFigure::GetHelperPolyLinesSize()
 {
   return m_HelperPolyLines.size();
 }
 
 
 bool mitk::PlanarFigure::IsHelperToBePainted(unsigned int index)
 {
   return m_HelperPolyLinesToBePainted->GetElement( index );
 }
 
 
 bool mitk::PlanarFigure::ResetOnPointSelect()
 {
   return false;
 }
 
 void mitk::PlanarFigure::RemoveControlPoint( unsigned int index )
 {
   if ( index > m_ControlPoints.size() )
     return;
 
   if ( (m_ControlPoints.size() -1)  < this->GetMinimumNumberOfControlPoints() )
     return;
 
   ControlPointListType::iterator iter;
   iter = m_ControlPoints.begin() + index;
 
   m_ControlPoints.erase( iter );
 
   m_PolyLineUpToDate = false;
   m_HelperLinesUpToDate = false;
   m_FeaturesUpToDate = false;
 
   --m_NumberOfControlPoints;
 }
 
 void mitk::PlanarFigure::RemoveLastControlPoint()
 {
   RemoveControlPoint( m_ControlPoints.size()-1 );
 }
 
 void mitk::PlanarFigure::DeepCopy(Self::Pointer oldFigure)
 {
   //DeepCopy only same types of planar figures
   //Notice to get typeid polymorph you have to use the *operator
   if(typeid(*oldFigure) != typeid(*this))
   {
     itkExceptionMacro( << "DeepCopy(): Inconsistent type of source (" << typeid(*oldFigure).name() << ") and destination figure (" << typeid(*this).name() << ")!" );
     return;
   }
 
   m_ControlPoints.clear();
   this->ClearPolyLines();
   this->ClearHelperPolyLines();
 
   // clone base data members
   SetPropertyList(oldFigure->GetPropertyList()->Clone());
 
   /// deep copy members
   m_FigurePlaced                = oldFigure->m_FigurePlaced;
   m_SelectedControlPoint        = oldFigure->m_SelectedControlPoint;
   m_FeaturesMTime               = oldFigure->m_FeaturesMTime;
   m_Features                    = oldFigure->m_Features;
   m_NumberOfControlPoints       = oldFigure->m_NumberOfControlPoints;
 
   //copy geometry 2D of planar figure
   Geometry2D::Pointer affineGeometry = oldFigure->m_Geometry2D->Clone();
   SetGeometry2D(affineGeometry.GetPointer());
 
   for(unsigned long index=0; index < oldFigure->GetNumberOfControlPoints(); index++)
   {
     m_ControlPoints.push_back( oldFigure->GetControlPoint( index ));
   }
 
   //After setting the control points we can generate the polylines
   this->GeneratePolyLine();
 }
 
 void mitk::PlanarFigure::SetNumberOfPolyLines( unsigned int numberOfPolyLines )
 {
   m_PolyLines.resize(numberOfPolyLines);
 }
 
 void mitk::PlanarFigure::SetNumberOfHelperPolyLines( unsigned int numberOfHerlperPolyLines )
 {
   m_HelperPolyLines.resize(numberOfHerlperPolyLines);
 }
 
 
 void mitk::PlanarFigure::AppendPointToPolyLine( unsigned int index, PolyLineElement element )
 {
   if ( index < m_PolyLines.size() )
   {
     m_PolyLines.at( index ).push_back( element );
     m_PolyLineUpToDate = false;
   }
   else
   {
     MITK_ERROR << "Tried to add point to PolyLine " << index+1 << ", although only " << m_PolyLines.size() << " exists";
   }
 }
 
 void mitk::PlanarFigure::AppendPointToHelperPolyLine( unsigned int index, PolyLineElement element )
 {
   if ( index < m_HelperPolyLines.size() )
   {
     m_HelperPolyLines.at( index ).push_back( element );
     m_HelperLinesUpToDate = false;
   }
   else
   {
     MITK_ERROR << "Tried to add point to HelperPolyLine " << index+1 << ", although only " << m_HelperPolyLines.size() << " exists";
   }
 }
 
 bool mitk::PlanarFigure::Equals(const mitk::PlanarFigure& other) const
 {
   //check geometries
   if ( this->GetGeometry2D() && other.GetGeometry2D() )
   {
     if( !Equal(*(this->GetGeometry2D()), *(other.GetGeometry2D()), mitk::eps, true))
     {
       return false;
     }
   }
   else
   {
     return false;
   }
 
   //check isPlaced member
   if ( this->m_FigurePlaced != other.m_FigurePlaced)
   {
     return false;
   }
 
+  //check closed property
+  if (this->IsClosed() != other.IsClosed())
+  {
+    return false;
+  }
+
   //check control points
   if (this->m_ControlPoints != other.m_ControlPoints)
+  {
+
+    return false;
+  }
+
+  //check poly lines
+  if (this->m_PolyLines.size() != other.m_PolyLines.size())
   {
     return false;
   }
+  else
+  {
+    std::vector<PolyLineType>::const_iterator itThis = this->m_PolyLines.begin();
+    std::vector<PolyLineType>::const_iterator itEnd = this->m_PolyLines.end();
+    std::vector<PolyLineType>::const_iterator itOther = other.m_PolyLines.begin();
+
+    while( itThis != itEnd )
+    {
+      if(itThis->size() != itOther->size())
+        return false;
+      else
+      {
+        PolyLineType::const_iterator itLineThis = itThis->begin();
+        PolyLineType::const_iterator itLineEnd = itThis->end();
+        PolyLineType::const_iterator itLineOther = itOther->begin();
+
+        while(itLineThis != itLineEnd)
+        {
+          if(itLineThis->Index != itLineOther->Index)
+            return false;
+          if(itLineThis->Point != itLineOther->Point)
+            return false;
+
+          ++itLineThis;
+          ++itLineOther;
+        }
+      }
+      ++itThis;
+      ++itOther;
+    }
+  }
+
+  //check features
+  if (this->GetNumberOfFeatures() != other.GetNumberOfFeatures())
+  {
+    return false;
+  }
+  else
+  {
+    std::vector<Feature>::const_iterator itThis = m_Features.begin();
+    std::vector<Feature>::const_iterator itEnd = m_Features.end();
+    std::vector<Feature>::const_iterator itOther = other.m_Features.begin();
+
+    while(itThis != itEnd)
+    {
+      if( itThis->Quantity != itOther->Quantity )
+        return false;
+      if( itThis->Unit.compare(itOther->Unit) != 0 )
+        return false;
+      if( itThis->Name.compare(itOther->Name) != 0 )
+        return false;
+
+      ++itThis;
+      ++itOther;
+    }
+  }
 
   return true;
 }
 
 bool mitk::Equal( const mitk::PlanarFigure& leftHandSide, const mitk::PlanarFigure& rightHandSide, ScalarType eps, bool verbose )
 {
   return leftHandSide.Equals(rightHandSide);
 }