diff --git a/src/main/java/Model/Arrangement.java b/src/main/java/Model/Arrangement.java
index 0a8010e..7069c61 100644
--- a/src/main/java/Model/Arrangement.java
+++ b/src/main/java/Model/Arrangement.java
@@ -11,51 +11,34 @@ import java.util.LinkedList;
  */
 public class Arrangement {
 
-    private LinkedList<Model.Coordinates> nodes;
-    private LinkedList<Model.Coordinates> lines;
+    private LinkedList<Coordinates> nodes;
+    private LinkedList<Coordinates> lines;
 
     public Arrangement(){
         nodes = new LinkedList<>();
         lines = new LinkedList<>();
     }
 
-    public void addNode(Model.Coordinates node){
+    public void addNode(Coordinates node){
         this.nodes.add(node);
     }
 
-    public void removeNode(int index){
-        this.nodes.remove(index);
-    }
-
-    public void removeNode(Model.Coordinates node){
-        this.nodes.remove(node);
-    }
-
-    public void addLine(Model.Coordinates line){
+    public void addLine(Coordinates line){
         this.lines.add(line);
     }
 
-    public void removeLine(int index){
-        this.lines.remove(index);
-    }
-
-    public void removeLine(Model.Coordinates line){
-        this.lines.remove(line);
-    }
-
-    public LinkedList<Model.Coordinates> getNodes() {
+    public LinkedList<Coordinates> getNodes() {
         return nodes;
     }
 
-    public void setNodes(LinkedList<Model.Coordinates> nodes) {
-        this.nodes = nodes;
-    }
-
-    public LinkedList<Model.Coordinates> getLines() {
+    public LinkedList<Coordinates> getLines() {
         return lines;
     }
 
-    public void setLines(LinkedList<Model.Coordinates> lines) {
+    public void setLines(LinkedList<Coordinates> lines) {
         this.lines = lines;
     }
+
+
+
 }
diff --git a/src/main/java/Model/DoublyConnectedEdgeList.java b/src/main/java/Model/DoublyConnectedEdgeList.java
new file mode 100644
index 0000000..da54dd6
--- /dev/null
+++ b/src/main/java/Model/DoublyConnectedEdgeList.java
@@ -0,0 +1,85 @@
+package Model;
+
+import java.util.LinkedList;
+
+/**
+ * Implementierung verschiedener Algorithmen zur Berechnung von Ausgleichsgeraden.
+ *
+ * @Author: Armin Wolf
+ * @Email: a_wolf28@uni-muenster.de
+ * @Date: 30.05.2017.
+ */
+public class DoublyConnectedEdgeList {
+
+    private LinkedList<Node> nodes;
+    private LinkedList<Edge> edges;
+    private LinkedList<Face> faces;
+
+    public DoublyConnectedEdgeList(){
+        this.nodes = new LinkedList<>();
+        this.edges = new LinkedList<>();
+        this.faces = new LinkedList<>();
+    }
+
+    public Node createNode(Coordinates point, String id){
+
+        Node node = new Node();
+        node.setCoordinates(point);
+        node.setID(id);
+
+        return node;
+    }
+
+    public Edge createEdge(Node source, Node destination, String id){
+
+        Edge edge = new Edge();
+        Edge twin = new Edge();
+
+        edge.setOrigin(source);
+        edge.setID(id);
+        twin.setOrigin(destination);
+        twin.setID("#"+id);
+
+        source.setIncidentEdge(edge);
+        destination.setIncidentEdge(twin);
+
+        return edge;
+    }
+
+    public Face createFace(Edge outerComponent, Edge innerComponent, String id){
+
+        Face face = new Face();
+        face.setOuterComponent(outerComponent);
+        face.setID(id);
+        Edge tempEdge;
+
+        if (!outerComponent.equals(null)){
+            tempEdge = outerComponent;
+            do {
+                tempEdge.setIncidentFace(face);
+                tempEdge = tempEdge.getNext();
+            } while (!tempEdge.equals(outerComponent));
+        }
+
+        if (!innerComponent.equals(null)){
+            LinkedList<Edge> componentlist = face.getInnerComponents();
+            componentlist.add(innerComponent);
+            tempEdge = innerComponent;
+            do {
+                tempEdge.setIncidentFace(face);
+                tempEdge = tempEdge.getNext();
+            } while (!tempEdge.equals(innerComponent));
+        }
+
+        return null;
+    }
+
+    public void createConnection(Edge edge, Edge pred){
+        edge.setPrev(pred);
+        pred.setNext(edge);
+    }
+
+
+
+
+}
diff --git a/src/main/java/Model/Edge.java b/src/main/java/Model/Edge.java
index 7980b6d..61f907d 100644
--- a/src/main/java/Model/Edge.java
+++ b/src/main/java/Model/Edge.java
@@ -14,6 +14,7 @@ public class Edge {
     private Face incidentFace;
     private Edge next;
     private Edge prev;
+    private String id;
 
     public Edge(){
         new Edge(null, null, null, null, null);
@@ -86,7 +87,7 @@ public class Edge {
         edge.setPrev(this);
         edge.setTwin(twin);
         edge.setIncidentFace(this.getIncidentFace());
-        
+
         twin.setOrigin(this.getTwin().getOrigin());
         twin.setPrev(this.getTwin().getPrev());
         twin.setNext(this.getTwin());
@@ -105,4 +106,12 @@ public class Edge {
 
         return edge;
     }
+
+    public String getID(){
+        return this.id;
+    }
+
+    public void setID(String id){
+        this.id = id;
+    }
 }
diff --git a/src/main/java/Model/Face.java b/src/main/java/Model/Face.java
index a0133bc..7a96e73 100644
--- a/src/main/java/Model/Face.java
+++ b/src/main/java/Model/Face.java
@@ -14,6 +14,11 @@ public class Face {
 
     private LinkedList<Edge> innerComponents;
     private Edge outerComponent;
+    private String id;
+
+    public Face(){
+        new Face(null, null);
+    }
 
     public Face(Edge outerComponent, LinkedList<Edge> innerComponents){
         this.outerComponent = outerComponent;
@@ -101,4 +106,12 @@ public class Face {
         }
 
     }
+
+    public String getID(){
+        return this.id;
+    }
+
+    public void setID(String id){
+        this.id = id;
+    }
 }
diff --git a/src/main/java/Model/Node.java b/src/main/java/Model/Node.java
index bb47c42..ba90fcc 100644
--- a/src/main/java/Model/Node.java
+++ b/src/main/java/Model/Node.java
@@ -11,6 +11,7 @@ public class Node {
 
     private Coordinates coordinates;
     private Edge incidentEdge;
+    private String id;
 
     public Node(){
         new Node(null, null);
@@ -21,7 +22,6 @@ public class Node {
         this.incidentEdge = incidentEdge;
     }
 
-
     public Coordinates getCoordinates() {
         return coordinates;
     }
@@ -37,4 +37,12 @@ public class Node {
     public void setIncidentEdge(Edge incidentEdge) {
         this.incidentEdge = incidentEdge;
     }
+
+    public String getID(){
+        return this.id;
+    }
+
+    public void setID(String id){
+        this.id = id;
+    }
 }