Questions tagged [frequency]

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ros2_control Odometery Data Publication Frequency Discrepancy

I am using ros2_control framework to control the motor wheel of my robot and to publish odometry data. However, I have encountered an unusual issue where the odometry data is being published at only ...
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increase/change mavros local_position pose publish frequency

How do I increase or change the mavros/local_position/pose publishing frequency? (Default only 30Hz) Originally posted by noob_ros on ROS Answers with karma: 21 on 2020-09-11 Post score: 0
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ROSTOPIC publish every 1 second a new data

Hey all, I would like to publish a rostopic that countains a certain data every 1 second, and i would like that the data change in every publish. Maybe read from a text file and publish line by line ...
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receiving transform from [/robot_state_publisher] that differed from ROS time

Hello ALL I'm beginner to ros I have mounted zed camera on my youBot robot and connected the tf tree as follows: ![image description](tf frames) when I visualize in rviz the camera only works when I ...
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Compute joint angles of movement without execution

I am planning, executing and recording linear robot movement with computeCartesianPath(). I would like to "simulate" this program. Essentially just ...
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Clustered scans with urg_node and Hokuyo UST-10LX

I'm working with the urg_node package and the Hokuyo UST-10LX lidar. And I've noticed that although the frequency of the /scan ...
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How can we know the frequency at which messages are being published in ROS2?

How can we know the frequency at which messages are being published in ROS2 ? Lets say if there is no rate mentioned. Originally posted by aks on ROS Answers with ...
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How to increase frequency of /diagnostics topic published by epos_hardware node?

Dear ROS community, I am using the epos_hardware ROS package as a hardware interface between an effort controller and a EPOS2 motor controller coupled with a Maxon EC90 motor. The set up is working ...
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what if computation complexity cannot meet the demand of callback frequency

According to the totorials, the callback function frequency is dependent on the its subscribing topic frequency. What will happen if the callback function is very complex and the computation time is ...
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Node rate with Turtlebot

Hello everyone, I have a Turtlebot and I want it to track someone. There are two nodes : the first one detects a face with OpenCv and send t the second one the center of the first face the second one ...
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frequency of odometry updates for navigation stack

I am working my way through the tutorial for the navigation stack. I have odometry msgs being published at about 12Hz (that's how fast they come in from the HW). The tutorial doesn't have any ...
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What does baud rate in SICK LMS do and how does it affect the frequency of the messages being published on the topic?

In SICK LMS range finder, what does baud rate do and how does it affect sampling rate, frequency of messages being published on /scan topic? Let the detection angle be θ. Anglular resolution be α. ...
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controller frequency in navigation stack

Hy, I'm having problems with navigation of my robot. I am using ROS navigation stack. The thing is my robot is driving like a snake around calculated global plan (it's like it can't drive straight). I ...
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rostopic hz output more than real frequency

Hi All, I have a callback function that takes point clouds from a openni device at a frequency of 30 Hz. Inside that function I do some computations with it and then I publish the outcome of my ...
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How to change publishing rate of a node to a topic?

hello,here are the publishing rate on the following topics:-- ...
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amcl publish frequency map-> odom

Hello! in my tf tree I have that between /map and /odom there's amcl that publish at 20Hz. How to increase this speed rate? Originally posted by alex920a on ROS Answers with karma: 35 on 2014-09-05 ...
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increase hokuyo URG-04LX-01 scan Frequency

How do i increase hokuyo URG-04LX-01 to scan at a higher Frequency. current it is 10Hz. i have add param name="Skip" value = "1"/ to my launch file, but a i increase the Value the ...
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robot_pose_ekf frequency too slow?

Hello everybody, I am currently trying to modify the Husky robot by adding an IMU to it and use the robot_pose_ekf to get a pose of the robot by combining the input of the wheel odometry and the IMU. ...
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Setting Visual Odometry parameters for Low Frequency

Hello, I have tried the mono_depth_odometer node for visual odometry using a kinect in different machines. I have seen the low processing capabilities can severely degrade the odometry. Are there any ...
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Plotting lag, jitter, bandwidth and frequency of topics, how to?

I would like to plot the mentioned data during an experiment for one or more topics and nodes. Is there a way I can do that? I tried rxplot but it wants a message's field. I could go as far as writing ...
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Using Actionlib for publishing force data in ROS

Hello All! So here is what I want to implement, in a simple list format I want to have a topic which publishes data from my force sensor (serial) onto the network constantly. I want to have a ...
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ROS Answers SE migration: timer callback

Hello, all, Been searching for a while but I figured I'd ask directly. What are the pros/cons of using rate.sleep() to control loop frequency versus using a timer callback? From what I have gathered ...
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Serial Load Cell is slow in ROS

Hi all, So I have these load cells (4 of them) for which I have written a nice C++ class wrapper to interface with the sensors in a ROS environment. I have 4 topics, called "loadSensorX" ...
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How to do a frequency analysis of some velocity profiles?

Hello I have some question regarding analysing some post-processing data. I have extracted a linear and angular velocity of the robot moving around. The velocity is coming from AMCL and angular ...
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intermittent recording of Kinect inputs using rosbag

I'd like to record a bag file of Kinect data, which can be run on RGBDSLAM later, as is instructed here. Everything works perfectly, but for my own experiment I would like to record the bag files ...
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updaterate in libgazebo_ros_imu

Hi I'm trying to simulate an IMU with the plugin libgazebo_ros_imu, but I have one problem. I've defined in my .urdf the following code: ...
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Subscriber node not working for topic at 50Hz

Hello all, So I have a topic published by a publisher node, at 50 Hz. The topic publishes a message 'loadMsg' which consists of the following data types string unit float64 load Now I have my ...
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