From deb7815a886db8c7762b310a3eb0fce0d099991d Mon Sep 17 00:00:00 2001
From: Duy-Nguyen Ta <thduynguyen@gmail.com>
Date: Tue, 25 Jul 2017 16:19:29 -0400
Subject: [PATCH] add missing include

---
 gtsam/nonlinear/utilities.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gtsam/nonlinear/utilities.h b/gtsam/nonlinear/utilities.h
index 891c6fd80..07a43af53 100644
--- a/gtsam/nonlinear/utilities.h
+++ b/gtsam/nonlinear/utilities.h
@@ -19,6 +19,7 @@
 
 #include <gtsam/inference/Symbol.h>
 #include <gtsam/slam/ProjectionFactor.h>
+#include <gtsam/linear/Sampler.h>
 #include <gtsam/nonlinear/NonlinearFactorGraph.h>
 #include <gtsam/nonlinear/NonlinearFactor.h>
 #include <gtsam/nonlinear/Values.h>