From 5f2a4e0dc6435ba3937e33e418b8834e1964db8e Mon Sep 17 00:00:00 2001
From: Richard Roberts <richard.jw.roberts@gmail.com>
Date: Fri, 20 Sep 2013 15:25:11 +0000
Subject: [PATCH] Changed remaining Index to Key

---
 gtsam/nonlinear/ISAM2.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/nonlinear/ISAM2.h b/gtsam/nonlinear/ISAM2.h
index e4de22e6e..56e3c4e7e 100644
--- a/gtsam/nonlinear/ISAM2.h
+++ b/gtsam/nonlinear/ISAM2.h
@@ -585,7 +585,7 @@ public:
   const Value& calculateEstimate(Key key) const;
 
   /** Return marginal on any variable as a covariance matrix */
-  Matrix marginalCovariance(Index key) const;
+  Matrix marginalCovariance(Key key) const;
 
   /// @name Public members for non-typical usage
   /// @{