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tf broadcasting and listening in the same node

I am currently trying to make a perception part using tf. My robot 's position is broadcasted to tf, and the robot tries to read obstacles using tf. I want to put this on the same node " " ...
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tf::transformBroadcaster shows error of Lookup into the past, best practice for setting up broadcaster and listener

Follow up with my previous question #q283013, currently I have another problem with tf broadcaster with same error of lookup into the past. I am really confused now and I hope that you can help me ...
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Minimum time between publishing a joint state and tf listener update

Hi, I have 8 laser range finders propped up on a rotating vertical rod connected to a motor. The laser range finders is fixed to the sides of the rod at some 'xyz rpy' pose. I get the current angular ...
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Transform Listener Problem

Hi I'm new to ROS and am trying to transform a point from the /odom frame to the /map frame. Every time I run the package I get the following error: Invalid argument passed to lookupTransform argument ...
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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 ...
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TF tutorials question

Hello, I am new to tf and in ros in general - so some follow up questions may rise. My main questions will be marked with bold. I have built a 3 wheel robot on which I have put a lidar (hokuyo_link) ...
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listener lookupTwist producting wrong velocity for turns

I'm trying to extract linear velocity from an object's tf frame using lookupTwist. I simulate an object moving around on a 400m track. I used simple line and circle equations to describe its position ...
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transformPointCloud unconnected to tf_broadcaster

I am using the code tf_broadcaster from the ROS tutorial, but I am using "base_link" and "velodyne" as parent and children in the transformation. I am using "velodyne" ...
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tf Listener for OpenNI Tracker [Solved]

Hello all, I want get joint coordinates of skeleton. I understand that I can get this information using tf listener as mentioned here. http://wiki.ros.org/tf/Tutorials/Writing%20a%20tf%20listener%20%...
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Error: Lookup would require extrapolation into the past

Hi, I seem to be getting the error: Lookup would require extrapolation into the past. Requested time 1424871421.389785282 but the earliest data is at time 1424871421.599770804, when looking up ...
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RGBDSLAM - Slow transform pub‏lishing

Hi there, I have the RGBD SLAM v2 package (http://felixendres.github.io/rgbdslam_v2/) running on a Core i7 computer with a Nvidia GTX 780 graphics card. The computer runs Ubuntu 12.04.5 and ROS Hydro. ...
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Callback on transform available

Dear all, I would like to put in place a callback each time a new value of a given source frame in a given target frame is available. You can do this with a listener (waitForTransform() + ...
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tf listener cant look up transform frame

I run tf tf_echo /Pioneer3AT/map /Pioneer3AT/base_link and compute exact data needed (so, everything is looking good so far): ...
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What is the use of tf_listener?

I understand that the tf_listener is used to lookup a transform from the tf_tree and then work with that transform to do whatever you want. So it seems like the tf_listener is just a "tool" ...
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tf_listener error transform.tf::Transform::getOrigin does not have class type

Hello, I used the "Writing a tf listener (C++)" tutorial and Publishing Sensor Streams Over ROS tutorial and I created a sensor_msgs/pointcloud msg after listening to tfs... and the my code ...
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How to listen to tf inside a callback loop?

I am converting laser Scan points from laser frame to map frame(occupancy grid).The tf between them changes as the robot moves so I need to listen to TF every time the laser callback is called. But ...
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Getting the position and the pose of robot using tf_listener

I'm trying to get position and orientation of the robot calculated by gmapping. I used this question link text and tutorial link text as a reference. I can get the robot position using tf::Transform::...
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