From f34ae951fca8056c3e29ba8ef8861bc03ad156d9 Mon Sep 17 00:00:00 2001
From: Chris Beall <chrisbeall@gmail.com>
Date: Mon, 4 Jun 2012 23:04:25 +0000
Subject: [PATCH] oops, missed a file: add exists in visualSLAMValues

---
 gtsam/slam/visualSLAM.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gtsam/slam/visualSLAM.h b/gtsam/slam/visualSLAM.h
index f71d0c4ca..7674ed1e3 100644
--- a/gtsam/slam/visualSLAM.h
+++ b/gtsam/slam/visualSLAM.h
@@ -72,6 +72,9 @@ namespace visualSLAM {
     /// get a point
     Point3 point(Key j) const { return at<Point3>(j); }
 
+    /// check if value with specified key exists
+    bool exists(Key i) const { return gtsam::Values::exists(i); }
+
   };
 
   /**