diff --git a/include/ArrayTree/ArrayTreeBuilder.tpp b/include/ArrayTree/ArrayTreeBuilder.tpp
index 2996ffa..5ba8cac 100644
--- a/include/ArrayTree/ArrayTreeBuilder.tpp
+++ b/include/ArrayTree/ArrayTreeBuilder.tpp
@@ -50,6 +50,7 @@ ArrayTreeBuilder<WeightT, PixelT>::buildTree (Tree &tree, WeightAttributes<Weigh
     break;
     // XXX msg
   }
+  weightAttributes.setWeightBounds (tree);
   leaders.free ();
   newCompId = nullptr;
   buildChildren ();
diff --git a/include/AttributeProfiles.hpp b/include/AttributeProfiles.hpp
index bc8afd2..dc00c1a 100644
--- a/include/AttributeProfiles.hpp
+++ b/include/AttributeProfiles.hpp
@@ -14,6 +14,7 @@ namespace otb {
 
       inline void	updateTranscient ();
       inline PixelT	*getValues ();
+      inline void	printValues () const;
 
     protected:
       const Tree &tree;
diff --git a/include/AttributeProfiles.tpp b/include/AttributeProfiles.tpp
index 46081ab..88f3f13 100644
--- a/include/AttributeProfiles.tpp
+++ b/include/AttributeProfiles.tpp
@@ -28,6 +28,14 @@ AttributeProfiles<PixelT>::getValues () {
   return values;
 }
 
+template<typename PixelT>
+inline void
+AttributeProfiles<PixelT>::printValues () const {
+  cout << "AP" << endl;
+  const Size doubleSize (tree.getSize().width, 2*tree.getSize ().height);
+  printMap (cout, values, doubleSize, tree.getNodeCount ()) << endl << endl;
+}
+
 template<typename PixelT>
 inline void
 AttributeProfiles<PixelT>::free () {
diff --git a/include/Attributes/AreaAttributes.hpp b/include/Attributes/AreaAttributes.hpp
index 073371b..851c30a 100644
--- a/include/Attributes/AreaAttributes.hpp
+++ b/include/Attributes/AreaAttributes.hpp
@@ -7,13 +7,12 @@
 namespace otb {
   namespace triskele {
 
-    template<typename WeightT>
-    class AreaAttributes : public CompAttributeC<double> {
+    class AreaAttributes : public CompAttributeC<DimImg> {
     public:
-      inline AreaAttributes (const Tree &tree, const WeightAttributes<WeightT> &weightAttributes, const unsigned int &treeCoreCount);
+      inline AreaAttributes (const Tree &tree, const unsigned int &treeCoreCount);
       inline ~AreaAttributes ();
     protected:
-      inline void compute (const WeightAttributes<WeightT> &weightAttributes);
+      inline void compute ();
     };
 
 #include "AreaAttributes.tpp"
diff --git a/include/Attributes/AreaAttributes.tpp b/include/Attributes/AreaAttributes.tpp
index f5c38b4..6f36da0 100644
--- a/include/Attributes/AreaAttributes.tpp
+++ b/include/Attributes/AreaAttributes.tpp
@@ -1,22 +1,25 @@
 #ifndef _OTB_TRISKELE_AREA_ATTRIBUTES_TPP
 #define _OTB_TRISKELE_AREA_ATTRIBUTES_TPP
 
-template<typename WeightT>
 inline
-AreaAttributes<WeightT>::AreaAttributes (const Tree &tree, const WeightAttributes<WeightT> &weightAttributes, const unsigned int &treeCoreCount)
-  : CompAttributeC<double> (tree, treeCoreCount) {
-  compute (weightAttributes);
+AreaAttributes::AreaAttributes (const Tree &tree, const unsigned int &treeCoreCount)
+  : CompAttributeC<DimImg> (tree, treeCoreCount) {
+  compute ();
 }
 
-template<typename WeightT>
 inline
-AreaAttributes<WeightT>::~AreaAttributes () {
+AreaAttributes::~AreaAttributes () {
 }
 
-template<typename WeightT>
 inline void
-AreaAttributes<WeightT>::compute (const WeightAttributes<WeightT> &weightAttributes) {
-  // XXX
+AreaAttributes::compute () {
+  computeSameCompLevel ([this] (const DimImg &parentId) {
+      DimImg area = 0;
+      tree.forEachChildTI (parentId, [this, &area] (const bool &isLeaf, const DimImg &childId) {
+	  area += isLeaf ? 1 : CompAttribute<DimImg>::values [childId];
+	});
+      CompAttribute<DimImg>::values [parentId] = area;
+    });
 }
 
 #endif // _OTB_TRISKELE_AREA_ATTRIBUTES_TPP
diff --git a/include/Attributes/WeightAttributes.hpp b/include/Attributes/WeightAttributes.hpp
index 0e41e85..a4ef7af 100644
--- a/include/Attributes/WeightAttributes.hpp
+++ b/include/Attributes/WeightAttributes.hpp
@@ -13,6 +13,8 @@ namespace otb {
     public:
       inline WeightAttributes (const Tree &tree);
       inline ~WeightAttributes ();
+
+      inline void setWeightBounds (Tree &tree);
     };
 
 #include "WeightAttributes.tpp"
diff --git a/include/Attributes/WeightAttributes.tpp b/include/Attributes/WeightAttributes.tpp
index 100ccdb..f7bfd96 100644
--- a/include/Attributes/WeightAttributes.tpp
+++ b/include/Attributes/WeightAttributes.tpp
@@ -12,4 +12,31 @@ inline
 WeightAttributes<WeightT>::~WeightAttributes () {
 }
 
+template<typename WeightT>
+inline void
+WeightAttributes<WeightT>::setWeightBounds (Tree &tree) {
+  vector<DimImg> &weightBounds (tree.getWeightBounds ());
+  DimImg rootId = tree.getCompRoot ();
+
+  DimImg stepsCard = 0;
+  WeightT curLevel = CompAttribute<WeightT>::values [0];
+  for (DimImg compId = 1; compId <= rootId; ++compId) {
+    if (CompAttribute<WeightT>::values [compId] == curLevel)
+      continue;
+    ++stepsCard;
+    curLevel = CompAttribute<WeightT>::values [compId];
+  }
+  weightBounds.clear ();
+  weightBounds.reserve (stepsCard+1);
+  weightBounds.push_back (0);
+  curLevel = CompAttribute<WeightT>::values [0];
+  for (DimImg compId = 1; compId <= rootId; ++compId) {
+    if (CompAttribute<WeightT>::values [compId] == curLevel)
+      continue;
+    weightBounds.push_back (compId);
+    curLevel = CompAttribute<WeightT>::values [compId];
+  }
+  weightBounds.push_back (rootId+1);
+}
+
 #endif // _OTB_TRISKELE_WEIGHT_ATTRIBUTES_TPP
diff --git a/include/Tree.hpp b/include/Tree.hpp
index 45604fd..7042670 100644
--- a/include/Tree.hpp
+++ b/include/Tree.hpp
@@ -30,13 +30,19 @@ namespace otb {
       Size size;
 
       /*! Number of pixels / leaf */
-      DimNodeId leafCount, nodeCount;
+      DimImg leafCount;
+      /*! number of node */
+      DimNodeId nodeCount; /* nodeCount = leafCount+compCount */
 
       /*! Pointers on the parents of each leafs / nodes */
-      DimNodeId *leafParents, *compParents;
+      DimImg *leafParents, *compParents;
 
       /*! Pointers on the children and count how many children a parents have */
-      DimNodeId *children, *childCount;
+      DimImg *childCount;
+      DimNodeId *children;
+
+      /*! Pointers of same weight in parents (+1 : last is root)*/
+      vector<DimImg> weightBounds;
 
       /*! State of the tree */
       State state;
@@ -68,26 +74,34 @@ namespace otb {
       inline Size getSize () const;
 
       // Getters for tree structure
-      inline DimNodeId getRoot () const;
-      inline DimNodeId getAbsRoot () const;
-      inline DimNodeId getCompCount () const;
+      inline const DimImg	&getLeafCount () const;
+      inline const DimNodeId	&getNodeCount () const;
+      inline DimImg		getCompCount () const;
+      inline DimNodeId		getNodeRoot () const;
+      inline DimImg		getCompRoot () const;
 
-      inline const DimNodeId &getParent (const DimNodeId &idx) const;
-      inline const DimNodeId &getLeafParent (const DimNodeId &idx) const;
-      inline const DimNodeId &getCompParent (const DimNodeId &idx) const;
-      inline const DimNodeId &getChildrenCount (const DimImg &idx) const;
-      inline const DimSideImg &getLeafCount () const;
-      inline const DimSideImg &getNodeCount () const;
+      inline const DimImg	&getParent (const DimNodeId &nodeId) const;
+      inline const DimImg	&getLeafParent (const DimImg &leafId) const;
+      inline const DimImg	&getCompParent (const DimImg &compId) const;
+
+      inline const DimImg	&getChildrenCount (const DimImg &CompId) const;
+      inline const DimNodeId	&getChildren (const DimImg &childId) const;
+      inline const DimNodeId	*getChildren () const; // XXX a virer ?
+
+      inline const vector<DimImg> &getWeightBounds () const;
+      inline vector<DimImg> &getWeightBounds ();
 
       // Functions to apply to specific entities
       template<typename FuncToApply>
-      void forEachLeaf (const FuncToApply &f /* f (DimNodeId leafId) */) const;
+      void forEachLeaf (const FuncToApply &f /* f (DimImg leafId) */) const;
 
       template<typename FuncToApply>
-      inline void forEachComp (const FuncToApply &f /* f (DimNodeId compId) */) const;
+      inline void forEachComp (const FuncToApply &f /* f (DimImg compId) */) const;
 
       template<typename FuncToApply>
       inline void forEachChild (const DimNodeId &parentId, const FuncToApply &f /* f (DimNodeId childId) */) const;
+      template<typename FuncToApply>
+      inline void forEachChildTI (const DimNodeId &parentId, const FuncToApply &f /* f (bool isLeaf, DimImg childId) */) const;
 
 #ifdef ENABLE_LOG
       // Print info about the tree
diff --git a/include/Tree.tpp b/include/Tree.tpp
index f596827..5d5ad2a 100644
--- a/include/Tree.tpp
+++ b/include/Tree.tpp
@@ -1,6 +1,7 @@
 #ifndef _OTB_TRISKELE_TREE_TPP
 #define _OTB_TRISKELE_TREE_TPP
 
+// ========================================
 inline DimNodeId *
 Tree::getChildCount () {
   return childCount;
@@ -25,56 +26,74 @@ Tree::getSize () const {
   return size;
 }
 
-inline DimNodeId
-Tree::getRoot () const {
-  return nodeCount-1;
-}
-inline DimNodeId
-Tree::getAbsRoot () const {
-  return nodeCount-1+leafCount;
-}
-inline DimNodeId
-Tree::getCompCount () const {
-  return nodeCount-leafCount;
-}
-
-inline const DimNodeId &
-Tree::getParent (const DimNodeId &idx) const {
-  return leafParents[idx];
-}
-inline const DimNodeId &
-Tree::getLeafParent (const DimNodeId &idx) const {
-  return leafParents[idx];
-}
-inline const DimNodeId &
-Tree::getCompParent (const DimNodeId &idx) const {
-  return compParents[idx];
-}
-inline const DimNodeId &
-Tree::getChildrenCount (const DimImg &idx) const {
-  return childCount[idx];
-}
 inline const DimSideImg &
 Tree::getLeafCount () const {
   return leafCount;
 }
-inline const DimSideImg &
+inline const DimNodeId &
 Tree::getNodeCount () const {
   return nodeCount;
 }
+inline DimImg
+Tree::getCompCount () const {
+  return (DimImg) (nodeCount-leafCount);
+}
+inline DimNodeId
+Tree::getNodeRoot () const {
+  return nodeCount-1;
+}
+inline DimImg
+Tree::getCompRoot () const {
+  return (DimImg) (nodeCount-1-leafCount);
+}
 
+inline const DimImg &
+Tree::getParent (const DimNodeId &nodeId) const {
+  return leafParents[nodeId];
+}
+inline const DimImg &
+Tree::getLeafParent (const DimImg &leafId) const {
+  return leafParents[leafId];
+}
+inline const DimImg &
+Tree::getCompParent (const DimImg &compId) const {
+  return compParents[compId];
+}
 
+inline const DimImg &
+Tree::getChildrenCount (const DimImg &compId) const {
+  return childCount[compId];
+}
+inline const DimNodeId &
+Tree::getChildren (const DimImg &childId) const {
+  return children[childId];
+}
+inline const DimNodeId *
+Tree::getChildren () const {
+  return children;
+}
+
+inline const vector<DimImg> &
+Tree::getWeightBounds () const {
+  return weightBounds;
+}
+inline vector<DimImg> &
+Tree::getWeightBounds () {
+  return weightBounds;
+}
+
+// ========================================
 template<typename FuncToApply>
 inline void
-Tree::forEachLeaf (const FuncToApply &f /* f (DimNodeId leafId) */) const {
-  for (DimNodeId leafId = 0; leafId < leafCount; ++leafId)
+Tree::forEachLeaf (const FuncToApply &f /* f (DimImg leafId) */) const {
+  for (DimImg leafId = 0; leafId < leafCount; ++leafId)
     f (leafId);
 }
 
 template<typename FuncToApply>
 inline void
-Tree::forEachComp (const FuncToApply &f /* f (DimNodeId compId) */) const {
-  DimNodeId compCount = nodeCount - leafCount;
+Tree::forEachComp (const FuncToApply &f /* f (DimImg compId) */) const {
+  const DimNodeId compCount = getCompCount ();
   for (DimNodeId compId = 0; compId < compCount; ++compId)
     f (compId);
 }
@@ -86,5 +105,15 @@ Tree::forEachChild (const DimNodeId &parentId, const FuncToApply &f /* f (DimNod
   for (DimNodeId childId = minChild; childId < maxChild; ++childId)
     f (children[childId]);
 }
+template<typename FuncToApply>
+inline void
+Tree::forEachChildTI (const DimNodeId &parentId, const FuncToApply &f /* f (bool isLeaf, DimImg childId) */) const {
+  DimNodeId minChild = childCount[parentId], maxChild = childCount[parentId+1];
+  for (DimNodeId childId = minChild; childId < maxChild; ++childId) {
+    const DimNodeId &child (getChildren (childId));
+    const bool isLeaf = child < leafCount;
+    f (isLeaf, isLeaf ? (DimImg) child : (DimImg) (child-leafCount));
+  }
+}
 
 #endif // _OTB_TRISKELE_TREE_TPP
diff --git a/include/triskeleBase.tpp b/include/triskeleBase.tpp
index e02accc..c3e56b9 100644
--- a/include/triskeleBase.tpp
+++ b/include/triskeleBase.tpp
@@ -108,9 +108,9 @@ idx2point (const Size &size, const DimImg &idx) {
 }
 
 
-template <typename DimImg>
+template <typename T>
 inline std::ostream &
-printMap (std::ostream &out, const DimImg *map, const Size &size, DimNodeId maxValues) {
+printMap (std::ostream &out, const T *map, const Size &size, DimNodeId maxValues) {
   if (size.width > printMapMaxSide || size.height > printMapMaxSide) {
     return out << "map too big to print!" << std::endl;
   }
@@ -121,9 +121,9 @@ printMap (std::ostream &out, const DimImg *map, const Size &size, DimNodeId maxV
       if (!maxValues)
 	return out;
       if (*map == DimImg_MAX)
-	out << "   M";
+	out << "   M ";
       else
-	out << std::setw(3) << *map;
+	out << std::setw(3) << ((double) *map) << " ";
     }
     out << std::endl;
   }
diff --git a/src/Tree.cpp b/src/Tree.cpp
index f04c3e2..4b2583e 100644
--- a/src/Tree.cpp
+++ b/src/Tree.cpp
@@ -38,6 +38,7 @@ Tree::clear () {
   fill_n (children, (leafCount-1)*2, 0);
   fill_n (childCount, leafCount+1, 0);
 #endif
+  weightBounds.resize (0);
 }
 
 void
@@ -57,6 +58,7 @@ Tree::free () {
   if (childCount)
     delete[] childCount;
   children = childCount = nullptr;
+  weightBounds.resize (0);
 }
 
 void
diff --git a/src/XMLTree/XMLTreeBuilder.cpp b/src/XMLTree/XMLTreeBuilder.cpp
index 04ffe63..0c174ce 100644
--- a/src/XMLTree/XMLTreeBuilder.cpp
+++ b/src/XMLTree/XMLTreeBuilder.cpp
@@ -81,7 +81,7 @@ XMLTreeBuilder::exportToFile (const Tree &tree, const std::string &fileName) {
     treeNode->SetAttribute ("height", tree.getSize ().height);
 
   // Construct the tree
-  writeNodeChildren (tree, tree.getAbsRoot (), treeNode);
+  writeNodeChildren (tree, tree.getNodeRoot (), treeNode);
   doc.SaveFile (fileName.c_str ());
 }
 
diff --git a/src/testMain.cpp b/src/testMain.cpp
index c514b8b..b3ea0bc 100644
--- a/src/testMain.cpp
+++ b/src/testMain.cpp
@@ -21,6 +21,9 @@
 #include "Attributes/WeightAttributes.hpp"
 #include "AttributeProfiles.hpp"
 #include "Attributes/AreaAttributes.hpp"
+#include "Attributes/AverageAttributes.hpp"
+#include "Attributes/SDAttributes.hpp"
+#include "Attributes/XYAttributes.hpp"
 
 //using namespace triskele;
 using namespace otb::triskele;
@@ -32,25 +35,30 @@ void prog (const Option &option) {
   Raster<PixelT> raster;
   option.inputImage.readBand (raster, option.chanel, option.topLeft, option.size);
 
-  Border border;
+  Border border; // default = no border
   GraphWalker graphWalker (raster.getSize (), border);
   ArrayTreeBuilder<PixelT, PixelT> atb (option.treeCoreCount, raster, graphWalker, TreeType::MAX);
   Tree tree;
   WeightAttributes<PixelT> weightAttributes (tree);
   atb.buildTree (tree, weightAttributes);
+  weightAttributes.printValues ("weight");
 
-  // XXX buildAttr
   AttributeProfiles<PixelT> attributeProfiles (tree);
   atb.setAttributProfiles (attributeProfiles, raster);
+  attributeProfiles.printValues ();
 
-  AreaAttributes<PixelT> areaAttributes (tree, weightAttributes, option.treeCoreCount);
-  // AverageAttributs<PixelT> averageAttributs (tree, raster);
-  // SDAttributs sdAttributs (tree, areaAttributs); // XXX<double>
-  // XYAttributs xyAttributs (tree, areaAttributs); // XXX<double>
-  // MoIAttributs moiAttributs (tree, xyAttributs); // XXX<double>
+  AreaAttributes areaAttributes (tree, option.treeCoreCount);
+  areaAttributes.printValues ("area");
+  AverageAttributes averageAttributes (tree, raster, areaAttributes, option.treeCoreCount);
+  averageAttributes.printValues ("average");
+  SDAttributes sdAttributes (tree, areaAttributes, option.treeCoreCount);
+  sdAttributes.printValues ("sd");
+  XYAttributes xyAttributes (tree, areaAttributes, option.treeCoreCount);
+  //xyAttributes.printValues ("XY"); // pb print de complexe
+  // MoIAttributes moiAttributes (tree, xyAttributes); // XXX<double>
 
   // XXX cut
-  // attribut.cut (out, attributProfiles, threshold)
+  // attribute.cut (out, attributProfiles, threshold)
 
   // XXX write