From 7a7b210c94aa02dcafe7aa9a3b64bc2e32b6f333 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christoph=20Sch=C3=BCtte?= <cschuet@google.com>
Date: Mon, 8 Jan 2018 18:52:27 +0100
Subject: [PATCH] Fix bug in MapBuilderBridge::GetTrajectoryStates() (#652)

---
 cartographer_ros/cartographer_ros/map_builder_bridge.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cartographer_ros/cartographer_ros/map_builder_bridge.cc b/cartographer_ros/cartographer_ros/map_builder_bridge.cc
index bb114e5..7968065 100644
--- a/cartographer_ros/cartographer_ros/map_builder_bridge.cc
+++ b/cartographer_ros/cartographer_ros/map_builder_bridge.cc
@@ -207,7 +207,7 @@ visualization_msgs::MarkerArray MapBuilderBridge::GetTrajectoryNodeList() {
         CreateTrajectoryMarker(trajectory_id, node_options_.map_frame);
 
     for (const auto& node_id_data : node_poses.trajectory(trajectory_id)) {
-      if (node_id_data.data.has_constant_data) {
+      if (!node_id_data.data.has_constant_data) {
         PushAndResetLineMarker(&marker, &trajectory_node_list.markers);
         continue;
       }