From f6386393a517dbbd037b969c02fe51b8d11f91ce Mon Sep 17 00:00:00 2001
From: "k.koide" <k.koide@aist.go.jp>
Date: Sun, 22 Sep 2024 23:22:29 +0900
Subject: [PATCH] add missing header

---
 src/gtsam_points/util/normal_estimation.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gtsam_points/util/normal_estimation.cpp b/src/gtsam_points/util/normal_estimation.cpp
index c8edff7..ad06b48 100644
--- a/src/gtsam_points/util/normal_estimation.cpp
+++ b/src/gtsam_points/util/normal_estimation.cpp
@@ -3,6 +3,7 @@
 
 #include <gtsam_points/util/normal_estimation.hpp>
 
+#include <iostream>
 #include <Eigen/Eigen>
 #include <gtsam_points/util/covariance_estimation.hpp>
 #include <gtsam_points/util/parallelism.hpp>