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Questions tagged [tf-tree]

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Separate your tf tree to have crucial frames update at a high frequency

I'm calculating inverse kinematics for a low latency system but my robot's tf tree is so large, the time it takes to update the whole tf tree affects the calculation time significantly for my ...
Yato's user avatar
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20 views

Two Turtlebot3 using slam toolbox to create their own map in a Gazebo World

This is my first post in this forum. I am new in the field and currently working on a project. My goal is to have two turtlebot3 in a gazebo world and allow them to create their own map using slam ...
noob_robot_31's user avatar
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1 answer
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Rviz Tf breaks when I change fixed frame to odom frame

how are you all doing? I've been trying to use the ros humble robot_localization package to estimate my robot's pose using odometry and imu data. The thing is, when the fixed frame is the ...
amsantos's user avatar
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26 views

Map-base-odom relationship for external localizator

I am using an external positioning device, and the device sends the vehicle's location data to ROS via UDP while also performing TF transformations. I provide the map frame as the "parent frame&...
aoz_rob's user avatar
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1 answer
212 views

ROS-Tf-Message too old

an external localization package is performing localization between the map and base_link frames. There is a lidar attached to the laser frame, which is connected to the base_link, and it is also ...
aoz_rob's user avatar
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1 answer
66 views

Unable to use rqt_tf_tree in Noetic, dot error

Hi guys, I'm developing on Ubuntu 20 with ROS Noetic full desktop completely updated but I'm struggling with an error I get if I try to run (but it also happens if I run ...
user avatar
0 votes
1 answer
134 views

ERROR: rosrun rqt_tf_tree rqt_tf_tree

I was trying to visualize the tf tree of a running system using: $ rosrun rqt_tf_tree rqt_tf_tree but this came up: ...
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1 answer
20 views

The relationship of earth frame and map frame

I follow the instruction of REP:105. As it mentioned to have the map frame corrected by the earth frame. So I use imu_filter_madgwick with 9-axis sensor to produce the absolute orientation of the ...
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1 answer
8 views

Physical Multirobot AMCL Not Able To Transform To /map

I'm trying to get multiple physical Turtlebot3's functioning with AMCL with namespaces. My setup works perfectly fine with the Gazebo simulations, but moving it to the real thing causes issues. After ...
user avatar
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1 answer
54 views

ROS2 rqt_tf_tree emits service not available, waiting again

I am running ROS2 eloquent on Ubuntu 18.04 and just performed a sudo apt-get install ros-eloquent-rqt-tf-tree and tried running the command in the terminal. The ...
user avatar
0 votes
1 answer
24 views

tf tree in namespace

I'm trying to see my tf tree (rqt_tf_tree, tf view_frames, etc.) for a namespaced robot. I can't seem to get the system to behave the way I want it to. I have tried setting the ...
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1 answer
3 views

Omit branches from the tf tree

Hello, using a URDF, the robot_state_publisher constructs the tf tree which is published in the relative topic. Is there any way to choose which branches of the tf tree are being published without ...
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1 answer
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robot_localization from map to odom does not move on Ubuntu-18.04 Melodic

I am using robot_localizationin my project. I'm fusing data from camera odometry, imu, depth sensor and usbl (XY position sensor) as odom0, , odom1, odom2 and imu0 ...
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1 answer
9 views

rqt_tf_tree error

Hi, I have installed the rqt_tf_tree. while running the command rosrun rqt_tf_tree rqt_tf_tree and getting the following terminal. ...
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0 votes
1 answer
7 views

robot_state_publisher posting wrong tf tree (missing connections)

Dear ROS community, I have the following problem: I'm trying to simulate a robotic leg using ROS kinetic and Gazebo. In order to get information about the current frame of each link I'm using the <...
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1 answer
2 views

TF doesn't work even though it's in the tf_tree

Hi, I need a tf between world and map. This is my starting situation (world and map are not connected): Now I establish a simple static transform: The two tf_trees are now connected: BUT somehow ...
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1 answer
2 views

Same tf tree changes some frames

Hello, I am running hector_mapping and hector_exploration_node after roslaunching my robot in gazebo and today I noticed that the tf tree changes from time to time: I also ran ...
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0 votes
2 answers
12 views

tf tree changes over time

Hello, I have a 3 wheel robot with a hokuyo lidar on it and today I noticed that the tf tree changes over time. By the word change, I mean that it starts: odom->base_footprint(--> l_wheel,...
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1 answer
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Warning with hector_exploration_node (problem with the tf tree)

Hello, I recently started using the nodes of the hector algorithms and today I tried to use the hector_exploration_node on my 3 wheel differential driven robot on ...
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1 answer
3 views

navsat_transform broadcasting strange map->utm tf

Hello there ! I'm trying to fuse data from different sensors (IMU, GPS and a rotating lidar) into an extended Kalman filter provided by robot_localization in order to drive my rover using move_base. I'...
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0 votes
1 answer
1 view

TF Tree Shared var

Hi all, does TF support such a structure GLOBAL -> A GLOBAL -> B GLOBAL -> C M -> A M -> B I don't want to setup my tree as M -> GLOBAL -&...
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1 answer
5 views

Is there a max number of edges allowed between two frames in a TF tree?

I have a pose graph of about 2000 nodes published as static transforms with tf2_ros::StaticTransformBroadcaster. Currently, the poses are chained together as a path,...
Jacob Perron's user avatar
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1 answer
25 views

Fusing absolute position information and IMU-data using the ekf_localization_node

Hello, I have a robot car with a laser-scanner and an imu and would like to fuse the position information of the two sensors. For laser based localization I am using the hector_mapping node which ...
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0 votes
1 answer
4 views

Best practice with tf transforms

Hey, I've got a small problem: I have three laser scanners mounted at my robot with -> frames: (name -> tf frame) Hokuyo 1 -> hokuyo1_frame Hokuyo 2 -> hokuyo2_frame Another 4 layer Laser ...
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0 votes
1 answer
1 view

Using slam_gmapping for an extern simulator

Hi, I have my own simulator and I would like to use slam_gmapping package. I understood that I have to publish to two topics /scan and /tf. I understood the data sent to /scan, but /tf is a ...
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0 votes
1 answer
15 views

Most recent transform in tf Tree

Hi all, I want to ask that why the value of Most recent transform in my transformation tree so high? Does it mean that there is too much latency in generating the transformations? My tf tree: Thanks ...
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0 votes
1 answer
33 views

tf subscriber information?

Hi, I'm working with a complicated ROS system involving a number of nodes and therefore a tf tree. I just wanted to know, is there a command to find out which particular transform or tfs are being ...
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