All Questions
25 questions
0
votes
1
answer
42
views
Duplicate tf messages with robot_state_publisher and coded tfs
From what I understand, robot_state_publisher reads the urdf and publishes the default frames to the ...
- 88
0
votes
1
answer
336
views
Transform between odom and base_link is faster than in real life [Solved]
i have a differential drive mobile robot and i want to add him the navigation and the localization satck.
Currently it's controlled by a teleop.
But when i look the transform between odom and ...
- 3
0
votes
1
answer
72
views
TF get the time of last transform
Hello!
I want to check if the tf2_ros::Buffer received a valid transform from A to B in the last x seconds (to throw an error in case of time out). So something like ...
labude
0
votes
1
answer
64
views
tf not found using python in ros noetic
Hi
I have followed the tutorial here to find a transformation between 2 frames using Python in ROS Noetic, but I can't get it even though I'm sure the tf exists because I can find it in the terminal.
...
robra
0
votes
1
answer
63
views
creating the map with only Lidar
I am using, ROS Noetic + 20.04.
Lidar hardware: rplidar_a3m1
I installed slam_toolbox ...
amjack
0
votes
2
answers
208
views
[ROS2] tf2 broadcaster
Hello,
I'm currently working on a differential drive robot with ROS2 and encountering some errors with a rclcpp transform broadcaster. I hope i can get some answers as to what I am doing wrong. I'm ...
Loekes
0
votes
2
answers
59
views
[ROS2]Are there any examples of tf2 broadcast or listener
Hello comrades, I`m just trying to get odometry from t265 from realsense2_lib examples. After compiling and running this code below, I get that target frame does not exist.
Thanks in advance.
...
Sol
0
votes
1
answer
4
views
Support for ROS2 Dashing along with python3
I have built the geometry library for my project using colcon for ROS2 Dashing and Python 3 and sourced it using ...
shikharvaish28
0
votes
1
answer
134
views
Could not find waitForTransform() function in TF2 package of ROS2
We are working on laser_filters package porting to ROS2 in that waitForTransform() method is used but I could not find similar method in ROS2 crystal/bouncy.
Originally posted by vandanamandlik on ...
vandanamandlik
0
votes
1
answer
17
views
How to migrate tf data types such as Quaternion, Vector3, Transform to tf2?
There is not much mentioned about tf2 datatypes on tf2_ros documentation at http://docs.ros.org/latest/api/tf2_ros/html/c++/.
While comparing to http://docs.ros.org/latest/api/tf/html/c++/, we don't ...
cybodroid
0
votes
1
answer
11
views
tf2 Documentation Needs Work
As we get ramped up on our own ROS environment, we've found the tf2 implementation extremely hard to understand. So this is a bit of a plea for folks who understand it well, to improve the tutorials, ...
vschmidt
0
votes
1
answer
47
views
How can I access all static TF2 transforms?
I have two nodes who each publish a single static TF2 transform (each with a different child frame) via tf2_ros.StaticTransformBroadcaster.sendTransform upon startup. These are essentially ...
BJP
0
votes
2
answers
3
views
import tf2/StaticTransformPublisher in Python
I'm following this tutorial[1] and having trouble with importing.
[1] http://wiki.ros.org/tf2/Tutorials/Writing%20a%20tf2%20static%20broadcaster%20(Python)
...
- 4,294
0
votes
2
answers
231
views
tf2_ros buffer transform PointStamped?
I'd like to transform a PointStamped using a python tf2_ros.Buffer, but so far I'm only getting type exceptions.
The following ...
- 3,397
0
votes
1
answer
30
views
TF Listener for static transforms exclusively
Is there a way to listen to only the static transforms in a TF tree (e.g. base_link --> base_laser_link) without instantiating an entire ...
spmaniato
0
votes
1
answer
11
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,...
- 818
0
votes
1
answer
19
views
tf2 stamped datatypes tutorial fails to build
I'm trying to walk through the tf2 tutorials following the instructions here: http://wiki.ros.org/tf2/Tutorials/Using%20stamped%20datatypes%20with%20tf2%3A%3AMessageFilter
Trying to build the source ...
eddy.scott
0
votes
1
answer
12
views
How to substitute TF2 prefix
Hi,
I have seen that tf_prefix support is deprecated in TF2. What is the proper way now of having the same functionality? That is, I have two robots, robot1 and robot2, and I want the TF frames to ...
Javier V. Gómez
0
votes
1
answer
51
views
tf2 tutorial writing broadcaster -- compile error
Hi,
I'm following the tutorial at http://wiki.ros.org/tf2/Tutorials/Writing%20a%20tf2%20broadcaster%20%28C%2B%2B%29
I copy-and-pasted the code, made changes to CMakeLists.txt, but I see this error ...
nitekrawler
0
votes
1
answer
47
views
tf2, thread, setUsingDedicatedThread, timeout
I'm migrating part of my code to tf2. Big chunk of my code is library that can run online or offline, so I pass at construction time a reference to a tf2_ros::Buffer object. It is then used to lookup ...
brice rebsamen
0
votes
1
answer
55
views
Again a Migration Question From TF to TF2
Hi all,
at first, I am sorry if this question might be a duplicate, however I didn't find a clear answer while searching this forum.
So I decided to migrate my code from TF to TF2. I encountered lots ...
Karsten
0
votes
1
answer
73
views
tf2 buffer_server timeout and buffer size
I'm starting the buffer_server with
rosrun tf2_ros buffer_server
I've seen in its source code on github that one can specify the buffer size through the parameter ...
gaya
0
votes
1
answer
16
views
Is there a good tf2 tutorial?
Hi there,
Trying to use tf2 with hydro here, however I just can't get the tutorials to work. For the broadcaster, the C++ tutorial is missing. For the listener, there is a structure that seems to be ...
Guido
0
votes
2
answers
132
views
tf transformPoint() equivalent on tf2?
It used to be that, with tf, we would use a TransformListener and its transformDATA() methods, e.g.
...
ssafarik
0
votes
1
answer
2
views
tf to tf2 SendTransform type error
I am working on some forked code that is setup for tf and on my BeagleBone Black I only have tf2. I have most of the code working but it is erroring out on sendtransform with
TypeError: sendTransform()...
MobileWill