jjb1220's profile - activity

ImportError: No module named launch Hello, I ran ./file_name.py to run a python file on ros2 supported open source . But

Thanks for the reply. As per your advice, I put python instead of python and tried to run it again, but the same error i

thank you. I made a mistake

Hello, I am trying to pubuilsh a fake pose in code. I checked the message rules and put the desired value and executed it, but the following error occurs in the subscriber. May i know what mistake i made??

Error:   TF_NAN_INPUT: Ignoring transform for child_frame_id "map" from authority "unknown_publisher" because of a nan value in the transform (0.000000 0.000000 nan) (0.000000 0.000000 0.000000 1.000000)
         at line 244 in /tmp/binarydeb/ros-melodic-tf2-0.6.5/src/buffer_core.cpp

Below is the code I want to run

#include "ros/ros.h"
#include "geometry_msgs/PoseStamped.h"
#include "geometry_msgs/PoseWithCovarianceStamped.h"
#include <tf/transform_broadcaster.h>
#include <iostream>

static geometry_msgs::PoseStamped rpyPose_goal;

using namespace std;
class send_Pose{
public:
    // Initialize ROS publishers
    ros::Publisher start_pub;
    ros::Publisher goal_pub;

// Take Goal_pose as input and publish
void handle_goal_pose() {

  rpyPose.header.frame_id = "map";
  rpyPose.header.stamp = ros::Time::now();
  rpyPose.pose.pose.position.x = (float)16.9677391052;
  rpyPose.pose.pose.position.y = (float)6.06961250305;
  rpyPose.pose.pose.position.z = (float)0;
  rpyPose.pose.pose.orientation.x = (float)0;
  rpyPose.pose.pose.orientation.y = (float)0;
  rpyPose.pose.pose.orientation.z = (float)0.683183893935;
  rpyPose.pose.pose.orientation.w = (float)0.730246374224;
  start_pub.publish(rpyPose);
  ROS_INFO("SUCCESS!");
}

};

int main(int argc, char **argv) {
  ros::init(argc, argv, "rviz_click_to_2d");
  ros::NodeHandle node;
  send_Pose send_pose;

  send_pose.goal_pub = node.advertise<geometry_msgs::PoseStamped>("/move_base_simple/goal", 1);

  send_pose.handle_start_pose();
  send_pose.handle_goal_pose();

  ros::Rate loop_rate(10);

  while (ros::ok()) {
        ros::spinOnce();
        loop_rate.sleep();
  }
  return 0;
}

ImportError: No module named launch Hello, I ran ./file_name.py to run a python file on ros2 supported open source . But

how to creating fake Pose Hello, I am trying to pubuilsh a fake pose in code. I checked the message rules and put the de

ImportError: No module named launch Hello, I ran ./file_name.py to run a python file on ros2 supported open source . But

module not found error : No module named launch Hello, I wanted to download an open source and run a python file for 2D

at fist, I'll start with links for converting point clouds to x,y,z arrays. Thanks so much for the detailed explanation

I can get the point cloud from velodyne.
but I need to get the point cloud that near velodyne or that infront of. so I watched the msg site but i don't still know.
Which message field indicates which point cloud is in front?

How do detect the point cloud is in front of you? I can get the point cloud from velodyne. but I need to get the point c

lego-slam lidar sensor arbitrary position Hello, I am try to mapping with Lego-loam slam. Except for the IMU sensor, onl

No visualization of loam execution through bag file Hello, I want to visualize the loam by executing the current bag fil

thank you for comment, this is my view frames

can't visualize lego rom slam with vleodyne hello, I am a newbie to ROS. I currently have a 9DOF axis IMU sensor and a l

can't visualize lego rom slam with vleodyne hello, I am a newbie to ROS. I currently have a 9DOF axis IMU sensor and a l

can't visualize lego rom slam with vleodyne hello, I am a newbie to ROS. I currently have a 9DOF axis IMU sensor and a l

As a result, the above article did not fix it. I just got a hint. lol I republished the values ​​provided by the IMU sen

As a result, the above article did not fix it. lol I republished the values ​​provided by the IMU sensor I use according

Thank you for clicking, hello, I'm ros begginer. I am currently using IMU for Slam mapping. But I get the ERR MSG(MSG to TF : Quaternion Not Properly Normalized). What should I do??

$ rostopic echo /imu_data
header:
  seq: 122552
  stamp:
  secs: 1626158167
  nsecs: 547560799
  frame_id: "imu_link"
orientation:
  x: 126.18
  y: -40.61
  z: -174.65
  w: -40.63
orientation_covariance: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
angular_velocity:
  x: 2.20086018676
  y: 0.0
  z: 0.0
angular_velocity_covariance: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
linear_acceleration:
  x: 0.0
  y: 0.0
  z: 0.0
linear_acceleration_covariance: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]