+ return ItTagHT->second;
+ return NULL;
+}
+
+/**
+ * \brief retrieves a Dicom Element using (group, element)
+ * @param group Group number of the searched Dicom Element
+ * @param elem Element number of the searched Dicom Element
+ * @return
+ */
+DocEntry *ElementSet::GetDocEntry(uint16_t group, uint16_t elem)
+{
+ TagKey key = DictEntry::TranslateToKey(group, elem);
+ TagDocEntryHT::iterator it = TagHT.find(key);
+
+ if ( it!=TagHT.end() )
+ return it->second;
+ return NULL;
+}
+
+/**
+ * \brief Copies all the attributes from an other DocEntrySet
+ * @param set entry to copy from
+ * @remarks The contained DocEntries a not copied, only referenced
+ */
+void ElementSet::Copy(DocEntrySet *set)
+{
+ // Remove all previous entries
+ ClearEntry();
+
+ DocEntrySet::Copy(set);
+
+ ElementSet *eltSet = dynamic_cast<ElementSet *>(set);
+ if( eltSet )
+ {
+ TagHT = eltSet->TagHT;
+ for(ItTagHT = TagHT.begin();ItTagHT != TagHT.end();++ItTagHT)
+ {
+ (ItTagHT->second)->Register();
+ }
+ }
+}
+
+/**
+ * \brief Checks whether *all* the DataEntries of the group have all
+ * the same type for VR (ImplicitVR or ExplicitVR)
+ * @param group group number to be checked
+ * @return 1:ImplicitVR 2:ExplicitVR -1:NotCoherent
+ */
+int ElementSet::IsVRCoherent( uint16_t group )
+{
+ uint16_t currentGroup;
+ int codeVR = -1;
+ int currentCodeVR;
+ for(TagDocEntryHT::iterator cc = TagHT.begin();cc != TagHT.end(); ++cc)