From 989ab9a94f61061c4867a044a1327b8064dd3867 Mon Sep 17 00:00:00 2001
From: Yong-Dian Jian <ydjian@gmail.com>
Date: Mon, 18 Oct 2010 19:23:15 +0000
Subject: [PATCH] add an simple interface to add prior

---
 linear/GaussianFactorGraph.cpp | 4 ++++
 linear/GaussianFactorGraph.h   | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/linear/GaussianFactorGraph.cpp b/linear/GaussianFactorGraph.cpp
index 86d7efbe9..126a5e131 100644
--- a/linear/GaussianFactorGraph.cpp
+++ b/linear/GaussianFactorGraph.cpp
@@ -174,4 +174,8 @@ GaussianFactorGraph GaussianFactorGraph::add_priors(double sigma, const Gaussian
 	return result;
 }
 
+GaussianFactorGraph GaussianFactorGraph::add_priors(double sigma) const {
+	return add_priors(sigma, GaussianVariableIndex<>(*this)) ;
+}
+
 } // namespace gtsam
diff --git a/linear/GaussianFactorGraph.h b/linear/GaussianFactorGraph.h
index 69ff3aa84..256c7b453 100644
--- a/linear/GaussianFactorGraph.h
+++ b/linear/GaussianFactorGraph.h
@@ -150,6 +150,8 @@ namespace gtsam {
      * @param sigma Standard deviation of Gaussian
      */
     GaussianFactorGraph add_priors(double sigma, const GaussianVariableIndex<>& variableIndex) const;
+    GaussianFactorGraph add_priors(double sigma) const;
+
 
   };