im com (dynamic meta)

src/include/ranges/dynamic_range.cc.h

@@ -439,6 +439,13 @@ namespace MultiArrayTools
     template <class EC>
     typename DynamicRange<EC>::MetaType DynamicRange<EC>::get(size_t pos) const
     {
+	for(size_t i = mOrig.size(); i != 0; --i) {
+	    auto& x = mOrig[i-1];
+	    const size_t redpos = pos % x->size();
+	    out = out + x->stringMeta(redpos);
+	    pos -= redpos;
+	    pos /= x->size();
+	}
 	return MetaType(); // !!!
     }
 

src/include/ranges/dynamic_range.h

@@ -178,7 +178,7 @@ namespace MultiArrayTools
 
     public:
         typedef IndexInterface<DynamicIndex<EC>,DynamicMetaT> IB;
-	typedef DynamicMetaT MetaType;
+	typedef std::vector<char> MetaType;
 	typedef DynamicRange<EC> RangeType;
 	typedef DynamicIndex IType;
 
@@ -287,7 +287,7 @@ namespace MultiArrayTools
 	typedef RangeBase RB;
 	typedef DynamicIndex<EC> IndexType;
 	typedef DynamicRange RangeType;
-	typedef DynamicMetaT MetaType;
+	typedef std::vector<char> MetaType;
 
     private:
 	DynamicRange() = default;

src/include/ranges/range_base.h

@@ -80,7 +80,9 @@ namespace MultiArrayTools
 
         std::intptr_t id() const;
 
+        virtual size_t typeNum() const = 0;
 	virtual std::string stringMeta(size_t pos) const = 0;
+        virtual const char* cmeta(size_t pos) const = 0;
 	virtual vector<char> data() const = 0; // usefull when writing to files, etc...
 
 	virtual SpaceType spaceType() const = 0;

src/include/ranges/single_range.h

@@ -231,8 +231,10 @@ namespace MultiArrayTools
 	virtual SpaceType spaceType() const final;
         virtual DataHeader dataHeader() const final;
 
+        virtual size_t typeNum() const final;
 	virtual std::string stringMeta(size_t pos) const final;
 	virtual vector<char> data() const final;
+        virtual const char* cmeta() const final;
 	
 	bool isMeta(const U& metaPos) const;
 	
@@ -369,6 +371,12 @@ namespace MultiArrayTools
 	return 1;
     }
 
+    template <typename U, SpaceType TYPE, size_t S>
+    size_t GenSingleIndex<U,TYPE,S>::typeNum() const
+    {
+        return NumTypeMap<U>::num;
+    }
+    
     template <typename U, SpaceType TYPE, size_t S>
     std::string GenSingleIndex<U,TYPE,S>::stringMeta() const
     {
@@ -382,6 +390,12 @@ namespace MultiArrayTools
 	    ( mMetaPtr, IB::mPos, mExplicitRangePtr );
     }
 
+    template <typename U, SpaceType TYPE, size_t S>
+    const char* GenSingleIndex<U,TYPE,S>::cmeta() const
+    {
+        return reinterpret_cast<const char*>(mSpace.data());
+    }
+    
     template <typename U, SpaceType TYPE, size_t S>
     const U* GenSingleIndex<U,TYPE,S>::metaPtr() const
     {