diff -u -r1.1 -r1.2
--- SimpleTrackAnalysis.java	25 Apr 2013 19:10:39 -0000	1.1
+++ SimpleTrackAnalysis.java	26 Apr 2013 22:44:38 -0000	1.2
@@ -1,5 +1,7 @@

 package org.lcsim.analysis;
 

+import hep.aida.IHistogram1D;
+

 import org.lcsim.event.EventHeader;
 import org.lcsim.event.Track;
 import org.lcsim.util.Driver;

@@ -9,14 +11,15 @@

  * This is a very simple analysis driver used for grid production tests on LCIO data.
  * 
  * @author Jeremy McCormick <[log in to unmask]>

- * @version $Id: SimpleTrackAnalysis.java,v 1.1 2013/04/25 19:10:39 jeremy Exp $

+ * @version $Id: SimpleTrackAnalysis.java,v 1.2 2013/04/26 22:44:38 jeremy Exp $

  */
 public class SimpleTrackAnalysis extends Driver {
 	AIDA aida = AIDA.defaultInstance();

+	IHistogram1D h = aida.histogram1D("Track Momentum", 100, 0., 100.);

 	public void process(EventHeader event) {
 		for (Track track : event.get(Track.class, "Tracks")) {

-			double[] p = track.getTrackStates().get(0).getMomentum();			
-			aida.cloud1D("Track Momentum").fill(computeMomentum(p));

+			double[] p = track.getTrackStates().get(0).getMomentum();
+			h.fill(computeMomentum(p));

 		}
 	}	
 	private double computeMomentum(double[] p) {