SLAM without odometry, hector_slam + sicktoolbox
Hi. I've been working on SLAM without odometry in ROS hydro. I'm currently using a SICK Lidar LMS200 which I could succesfully connect to serial and I get communication and data in RVIZ.
I git cloned the files and I started to do some test running ~$ roslaunch hector_slam_launch tutorial.launch
and it appears to be working properly so I assume the package was correctly installed.
Then I proceeded to review and modify the files tutorial.launch and ~/catkin_ws/src/hector_slam/hector_mapping/launch/mapping_default.launch
and ~/catkin_ws/src/hector_slam/hector_slam_launch/launch/tutorial.launch
The current mapping_default.launch :
<?xml version="1.0"?>
<launch>
<arg name="tf_map_scanmatch_transform_frame_name" default="scanmatcher_frame"/>
<arg name="base_frame" default="base_footprint"/>
<arg name="odom_frame" default="nav"/>
<arg name="pub_map_odom_transform" default="true"/>
<arg name="scan_subscriber_queue_size" default="5"/>
<arg name="scan_topic" default="scan"/>
<arg name="map_size" default="2048"/>
<node pkg="hector_mapping" type="hector_mapping" name="hector_mapping" output="screen">
<!-- Frame names -->
<param name="map_frame" value="map" />
<param name="base_frame" value="$(arg base_frame)" />
<param name="odom_frame" value="$(arg odom_frame)" />
<!-- Tf use -->
<param name="use_tf_scan_transformation" value="true"/>
<param name="use_tf_pose_start_estimate" value="false"/>
<param name="pub_map_odom_transform" value="$(arg pub_map_odom_transform)"/>
<!-- Map size / start point -->
<param name="map_resolution" value="0.050"/>
<param name="map_size" value="$(arg map_size)"/>
<param name="map_start_x" value="0.5"/>
<param name="map_start_y" value="0.5" />
<param name="map_multi_res_levels" value="2" />
<!-- Map update parameters -->
<param name="update_factor_free" value="0.4"/>
<param name="update_factor_occupied" value="0.9" />
<param name="map_update_distance_thresh" value="0.4"/>
<param name="map_update_angle_thresh" value="0.06" />
<param name="laser_z_min_value" value = "-1.0" />
<param name="laser_z_max_value" value = "1.0" />
<!-- Advertising config -->
<param name="advertise_map_service" value="true"/>
<param name="scan_subscriber_queue_size" value="$(arg scan_subscriber_queue_size)"/>
<param name="scan_topic" value="$(arg scan_topic)"/>
<!-- Debug parameters -->
<!--
<param name="output_timing" value="false"/>
<param name="pub_drawings" value="true"/>
<param name="pub_debug_output" value="true"/>
-->
<param name="tf_map_scanmatch_transform_frame_name" value="$(arg tf_map_scanmatch_transform_frame_name)" />
</node>
<node pkg="tf" type="static_transform_publisher" name="base_to_laser_broadcaster" args="0.1 0.1 0.1 0 0 0 base_link laser 100" />
<!--<node pkg="tf" type="static_transform_publisher" name="map_nav_broadcaster" args="0 0 0 0 0 0 map nav 100"/>-->
</launch>
Now the tutorial.launch:
<?xml version="1.0"?>
<launch>
<arg name="geotiff_map_file_path" default="$(find hector_geotiff)/maps"/>
<param name="/use_sim_time" value="true"/>
<node pkg="rviz" type="rviz" name="rviz"
args="-d $(find hector_slam_launch)/rviz_cfg/mapping_demo.rviz"/>
<include file="$(find hector_mapping)/launch/mapping_default.launch"/>
<include file="$(find hector_geotiff)/launch/geotiff_mapper.launch">
<arg name="trajectory_source_frame_name" value="scanmatcher_frame"/>
<arg name="map_file_path" value="$(arg geotiff_map_file_path)"/>
</include>
</launch>
as far as I understand, when I launch the tutorial.launch
file mapping_default.launch
should be running as well. However I notice that the tf transform are not published, so I have to publish them manually by
~$ rosrun tf static_transform_publisher ...
And still, having a tf tree, I see no map working on RVIZ
Anybody catching some errors here?
Thank you in advance
EDIT 1
Launching tutorial.launch, I get no tf tree. I do get the warn No transform between frames /map and scanmatcher_frame available. If I run the node manually I get a tree only if the values are not ...
Could you please run
~$ rosrun tf view_frames
and add the image to your question? Do any errors come up?Launching tutorial.launch, I get no tf tree. I do get the warn
No transform between frames /map and scanmatcher_frame available
. If I run the node manually I get a tree only if the values are not 0 0 0 0 0 0. Anyway i think the launch files are not running correctly. I get the same warn either way