Can label strings as labels without erroring out. Will be good for

classification problems.  Also updated Readme to include an example
(hopefully nicely formated).

README.mkd

@@ -9,4 +9,45 @@ existence as this project grows and is refined.
 
 Everything in this framework should be thread safe, if you find something
 that is not, please post an issue, a patch, or a unit test illustrating
-the issue.
+the issue.
+
+Example of running clustering
+```java
+
+class MyRecordClass extends Record {
+	@Feature
+	double myFeature1
+	@Feature
+	double myFeature2
+	@Feature
+	double myFeature3
+
+	@Label
+	String myLabel;
+
+	Object nonFeatureItem;
+	String nonFeatureOrLabelString;
+
+	//Other stuff I want to do
+}
+
+class MyClusterRunner {
+	public static void main(String[] args) {
+		double epsilon = 4d;  //Maximum distance between records in a cluster
+		int minClusterSize = 3;  //Minimum number of records in a cluster
+		RecordList myRecords = new RecordList();
+		//populate your object
+
+		DBScan dbscan = new DBScan(epsilon, minClusterSize);
+		db.setSourceData(list);
+		ArrayList<Cluster> clusters = db.getClusters();
+
+		//do stuff with your clusters i.e. print record label and cluster
+		for(int i=0; i<clusters.size(); i++) {
+			for(MyRecordClass r : clusters.getElements()) {
+				System.out.println("Cluster " + i+ ": " + r.getLabel());
+			}
+		}
+	}
+}
+```

src/main/java/me/mcnelis/rudder/data/ExampleRecord.java

@@ -15,4 +15,7 @@ public class ExampleRecord extends Record {
 
 	@Label
 	protected double doubleLabel;
+
+	@Label
+	protected  String stringLabel;
 }

src/main/java/me/mcnelis/rudder/data/Record.java

@@ -155,10 +155,9 @@ public double[] getFeatureAndLabelArray() {
 				annotation = f.getAnnotation(Label.class);
 			if (annotation != null) {
 				try {
-					arr.addElement(f.getDouble(this));
+						arr.addElement(f.getDouble(this));
 				} catch (IllegalArgumentException e) {
-
-					e.printStackTrace();
+					//Field or label isn't a double, so ignore it
 				} catch (IllegalAccessException e) {
 
 					e.printStackTrace();
@@ -169,7 +168,7 @@ public double[] getFeatureAndLabelArray() {
 		return arr.getElements();
 	}
 
-	public double getLabel() {
+	public double getDoubleLabel() {
 
 		Field[] fields = this.getClass().getDeclaredFields();
 		for(Field f : fields) {
@@ -179,8 +178,7 @@ public double getLabel() {
 				try {
 					return (f.getDouble(this));
 				} catch (IllegalArgumentException e) {
-
-					e.printStackTrace();
+					//Not a double, so just move forward
 				} catch (IllegalAccessException e) {
 
 					e.printStackTrace();

src/main/java/me/mcnelis/rudder/data/collections/RecordList.java

@@ -41,7 +41,7 @@ public double[] getSupervisedLabels() {
 		double[] d = new double[this.size()];
 		int cnt=0;
 		for (Record r : this) {
-			d[cnt] = r.getLabel();
+			d[cnt] = r.getDoubleLabel();
 			cnt++;
 		}
 

src/main/java/me/mcnelis/rudder/ml/unsupervised/clustering/DBScan.java

@@ -12,7 +12,7 @@ protected DBScan(double epsilon, int minPts) {
 
 	@Override
 	protected ArrayList<Cluster> cluster() {
-System.out.println("Size: " + this.sourceData.size());
+
 		for (Record r : this.sourceData) {
 			if (!r.isVisited()) {
 				r.setVisited();

src/test/java/me/mcnelis/rudder/ml/unsupervised/clustering/DBScanTest.java

@@ -23,9 +23,13 @@ public void testGetClusters() {
 					r.setFeature("feature1",1*j + i*.0000001);
 					r.setFeature("feature2", 1*j+ i*.0000001);
 					r.setFeature("feature3", 1*j+ i*.0000001);
+					r.setLabel("stringLabel", "label");
 				} catch (FeatureNotFoundException e) {
 					e.printStackTrace();
 					fail("Should not have  exception");
+				} catch (Exception e) {
+					// TODO Auto-generated catch block
+					e.printStackTrace();
 				}
 
 				list.add(r);

src/test/java/me/mcnelis/rudder/ml/unsupervised/clustering/KMeansTest.java

@@ -32,14 +32,7 @@ public void testClustering() {
 
 		KMeans k = new KMeans(3, list);
 		ArrayList<Cluster> clusters = k.cluster();
-		for(Cluster c : clusters) {
-			System.out.println(
-					c.getCentroid()[0] + "\n"
-					+ c.getCentroid()[1] + "\n"
-					+ c.getCentroid()[2] + "\n"
-					);
-
-		}
+		assertTrue(true);
 	}
 
 }