Simple tf transform without broadcaster/listener
I have a vision based control application, where a drone is flying around, finds a visual marker, extracts the coordinates of the visual marker in **body frame coordinates** and finally flies to the...
View ArticleVisual SLAM and coordinate frames for a mobile robot
[ROS Kinetic, Ubuntu 16.04] Hello again. I followed tf tutorials, read REP103, REP105 and still having trouble setting coordinate systems for my mapping robot properly. I get `map->camera_optical`...
View Articlepointcloud2 transform c++/python
running kinetic, ubuntu 16.04, gazebo 7, sawyer simulator with intera 5.2, kinect/openni camera warning: i am very new to ROS, C++ and Python. trying to transform a point cloud (type `PointCloud2`,...
View Article"right_arm_base_link" passed to lookupTransform argument target_frame does...
ros kinetic, ubuntu 16.04, gazebo 7, intera 5.2 (for sawyer robot), kinect camera in simulation. trying to transform pointcloud from kinect frame to base from of a sawyer robot. i've coded for this...
View Articlestatic_transform_publisher acting weird when giving tranlation and rotation both
I am playing a rosbag containing pointclouds on ros kinetic. I need to set the tf so that it is at a decent location to the [Panda robot](https://frankaemika.github.io/) for some task. The following is...
View ArticleNav Stack: one map for AMCL and one for move_base?
I need to run AMCL and Movebase from two different maps as there are many locations in an outdoor map that the robot would get stuck in gravel, rocks, bushes, etc that are below the level of the laser...
View ArticleShould tf frames exist at all times?
I am interested to know from the authors of TF if the nodes/joints in a tf tree are expected to exist during all the time the robot is up and running? As an example: using tf to spawn new joints (for...
View Articletf2 gimbal lock
Hi! I need to rotate a point around another point. This is dynamic so there aren't any frames associated that can be published to use the normal tf2 functionality. What I'm doing is translation to...
View ArticleGoogle Cartographer TF
I'm reading the documentation and I'm unsure how to make the TF. Am I understanding this right? "Note that Cartographer’s ROS integration uses tf2, thus all frame IDs are expected to contain only a...
View ArticleNo transform from [base_link] to frame [map]
Followed this [TF ROS tutorial](http://wiki.ros.org/tf/Tutorials/Introduction%20to%20tf) **Incurred error:**  using the following...
#include #include #include #include void callback(const sensor_msgs::PointCloud2ConstPtr &cloud_msg) { ROS_INFO("Message recieved:"); //msg to c string Eigen::Matrix4f transform_1 =...
View Articlerobot_localization transform functions for move_base?
Hi, I am curious as to the coordinate frames that my odometry data is in after using the robot_localization package ekf as a localisation estimator? I am using wheel odometry and an IMU in a...
View ArticleHow to transform the whole /tf frame?
Given I have an occupancy grid map which I would want to transform with a certain [tx,ty,theta] transformation. How do I do it? The tf tree is posted below and also the rviz which contains the grid...
View Articlehow to fix very low frame publish rate of turtlebot
Hi all, I'm trying to use moveit it to control a turtlebot arm mounted on turtlebot. When I run my moveit.launch file, there's always a transform error: [ERROR] [1543219008.768123467]: Transform error:...
View ArticleHow to setup tf frame for /laser_scan msg to display in rviz
I have setup my laser properly, able to display a topic called laser_scan, However when i display it on rviz, there was no visual display, despite having receiving messages and with no error received....
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