point cloud transform with static_transform_publisher
Hi,ereryone, I have a problem about point cloud transform, can you help me. I want to transform a pointcloud (come from a tilt kinect sensor) in `camera_depth_optical` to `base_link` frame.but I cannot...
View Articlehow to use concatenatePointCloud
I am publishing /tf with a tf_broadcaster node. Also I am publishing with velodyne_driver node. Then the velodyne_pointcloud Transform nodelet is suscribed to both previous topics, applies the tf to...
View ArticleHow to add transform tf to pointcloud2?
In c++, I know how to publish a PointCloud2 message. ROS::Publisher p = nodehandle.advertise("cloud_in") ; and p.publish(PC_msg); But how do I attach a transform matrix tf?
View ArticleRtabmap transform error with kinect
So I want to use rtabmap in order to map my environment. I am using Freenect to extract the data from the kinect using `roslaunch freenect_launch freenect-registered-xyzrgb.launch` Then i want to run...
View ArticleGet a navigation goal from laserscan
Hi everyone, For some purpose, I want to publish a navigation goal(`type geometry_msgs::PoseStamped` ). Now I want to get the position and orientation from the laserscan data as fellows, how can i make...
View Articlepcl_ros / tf : how to use latest transform instead of waiting ?
When calling "pcl_ros::transformPointCloud" I get the error: [ERROR] [1480244411.676958769, 1224.030000000]: Lookup would require extrapolation into the future. Requested time 1224.022000000 but the...
View ArticleIn ROSJava，how can i transform the 'odom' frame to 'map' frame?
I want to transform the 'odom' frame to the 'map' frame,but i do not know what i will do? In RosJava i saw a class "Transform". package org.ros.rosjava_geometry; import geometry_msgs.Pose; import...
View ArticleNo transform from [...] to [/map] and sometimes Fixed Frame [map] does not exit
Hi!!! I'm trying to use Hector SLAM in a TurtleBot. In the simulation, the launch file below (from an user of this platform) works fine, but it doesn't in the reality. The first error was "Fixed Frame...
View ArticleWhy should both use joint_states and transform
I wonder now that both robot_state_publisher and transform_broadcaster send kinematics information to /tf topic, why should we use both? I think I must misunderstand sth, though I have gone through tf...
View ArticleTransform a point - problem on rotation
Hello, I have a point on base_link (robot frame). When the robot move I want to compensate the point position so it stays on the same position (odom). Per example at t=0 the point is at 0,0...
View ArticleFrame Transformation using Laser_Geometry package
Hi, I am just wondering if it is possible to use the `laser_geometry` package for a fixed-tilt RPLidar A2 2D sensor? If I tilt it at a fixed angle (30deg) , is there a way to project that tilted laser...
View ArticleRoscpp header file for tf2 transform
Which header file to include for tf2::Transform? Unfortunately this is not a well documented way to use tf2 as far as I can find. It is in the file `Transform.h`, but that file can't be included as...
View Articlerviz ignoring transforms
With the lates update of Kinetic the display of laser scan data in some old bag files stopped working. I get the message [ERROR] [1490090873.307973855]: Ignoring transform for child_frame_id...
View Articlehector_slam with LIDAR not updating map in RVIZ
Hello! I am trying to use ROS Kinetic and a Hokuyo URG LIDAR unit in conjunction with hector_slam in order to produce a map of a room as the robot navigates around it. However, I am running in to some...
View ArticleHow to track frames from tf in ROS
I am a beginner in using ROS. I am trying to track some frames that are published as a set of transform but I do not know how to do this. I would like to ask if anyone that knows how to track frames...
View Articlegmapping don't publish the tf from map->odom
I recently try to run SLAM gmapping on Husky robot. I build the map successfully but don't get the tf from map to odom. Even the frame "map" doesn't exist. I have some the questions. 1. whether the...
View Articletf for every child frame?
Hey there, Is there any possibility to kind of "get" all child frames of a specific frame? I want to make a transformation (simple rotation on 2 axis) to every child frame of a specific frame....
View Articletf2 transformPose in C++
I'm used to the `transformPose()` method and similar from `tf`. However, the tf listener was apparently missing some static poses so I switched to `tf2`. Now I can get the TransformStamped but I'm...
View ArticleCould not obtain transform from /gps to base_link
After rosrun ekf_localization_node and navsat_transform_node, I got warning like this: [ WARN] [1494926574.013925839]: Could not obtain transform from /gps to base_link. Error was Invalid argument...
View ArticleUsing topic_tools transform to publish more complex types
I am attempting to use topic_tools/transform to publish messages that are slightly more complex than [what the examples show in the wiki](http://wiki.ros.org/topic_tools/transform), in order to avoid...
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