From 24c824278211bb8d845217ba58c4af7d3a4f1d11 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Thu, 3 Sep 2009 16:51:31 +0000
Subject: [PATCH] added print as virtual method

---
 cpp/NonlinearFactor.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cpp/NonlinearFactor.h b/cpp/NonlinearFactor.h
index 542ae31aa..7d2b4adbe 100644
--- a/cpp/NonlinearFactor.h
+++ b/cpp/NonlinearFactor.h
@@ -59,6 +59,9 @@ namespace gtsam {
     /** linearize to a LinearFactor */
     virtual boost::shared_ptr<LinearFactor> linearize(const FGConfig& c) const = 0;
 
+    /** print to cout */
+    virtual void print(const std::string& s = "") const = 0;
+
     /** get functions */
     double get_sigma() const {return sigma_;}
     Vector get_measurement() const {return z_;}