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How to write the data in txt file into other txt file I am working on reading the data from one file "file1.txt" having

Dear Steve, thanks for your response. The number of poses is seven this time but i want to make changeable from the term

Issue with creatin Pose[] pose array Since, i have created my own service whose requests are seven geometry_msgs/Pose po

Issue with creatin Pose[] pose array Since, i have created my own service whose requests are seven geometry_msgs/Pose po

How to use response of service Since, i have written my own service which takes float values [x, y, z, a, b, c, d] and r

Hello every one, since, i want to read messages from the topic /cartesian/solution which has sensor_msgs and want to then some random topic /panda/pand. For confirmation, i am also printing out one member of topic /cartesian/solution But all the time its showing me zero. It means my callback function is not updating the values to one declared in public class. Because all the time it is showing me zeros for all of these values, which are their inherent assignments. I want to read these from this topic but unable to do it.

Updated Code

using namespace std;

class server {
public:

  std_msgs::Float64 joint_position0, joint_position1, joint_position2, joint_position3, joint_position4, joint_position5, joint_position6, joint_position7, joint_position8, joint_position9, joint_position10, joint_position11, joint_velocity0, joint_velocity1, joint_velocity2, joint_velocity3, joint_velocity4, joint_velocity5, joint_velocity6, joint_velocity7, joint_velocity8, joint_velocity9, joint_velocity10, joint_velocity11;


  void jointStateCallback(const sensor_msgs::JointState::ConstPtr& msg);
}




void server::jointStateCallback(const sensor_msgs::JointState::ConstPtr& msg) {

  joint_position0.data = msg->position[0];
  joint_position1.data = msg->position[1];
  joint_position2.data = msg->position[2];
  joint_position3.data = msg->position[3];
  joint_position4.data = msg->position[4];
  joint_position5.data = msg->position[5];
  joint_position6.data = msg->position[6];
  joint_position7.data = msg->position[7];
  joint_position8.data = msg->position[8];
  joint_position9.data = msg->position[9];
  joint_position10.data = msg->position[10];
  joint_position11.data = msg->position[11];
  joint_velocity0.data = msg->velocity[0];
  joint_velocity1.data = msg->velocity[1];
  joint_velocity2.data =msg->velocity[2];
  joint_velocity3.data = msg->velocity[3];
  joint_velocity4.data = msg->velocity[4];
  joint_velocity5.data = msg->velocity[5];
  joint_velocity6.data = msg->velocity[6];
  joint_velocity7.data = msg->velocity[7];
  joint_velocity8.data = msg->velocity[8];
  joint_velocity9.data = msg->velocity[9];
  joint_velocity10.data = msg->velocity[10];
  joint_velocity11.data = msg->velocity[11];

}

int main(int argc, char** argv) { 
  server objserver;
  ros::init(argc, argv, "mover_node");
  ros::NodeHandle n;
  //ros::AsyncSpinner spinner(1);
  //spinner.start();

  //bool success;

  ros::Subscriber joint_sub = n.subscribe("/catersian/solution", 100, &server::jointStateCallback, &objserver);



while (ros::ok())
   {

  ros::spinOnce();

  cout << objserver.joint_position8.data;
  cout<<"\n";
   }


    return(0);
}

One last thing, i want to ask you that, how can i read the time from this topic and send it on other topic "/panda/pand"

Thank you so much. It was really as mistake with topic name. I did not put head to spelling. But thank you so much. It i

but ct2034, when i run the code, it gives me zeros only. It means my callback function is not working. Because all the t

Issue with reading sensor_msgs Hello every one, since, i want to read messages from the topic "/cartesian/solution" whic

Sorry, i did not highlight the code. I have highlighted it now. Thank you

Issue with reading sensor_msgs Hello every one, since, i want to read messages from the topic "/cartesian/solution" whic

Dear ct2034, i have updated my post. Since, i want to read the values from topic "/Cartesian/solution" and print out it

Issue with reading sensor_msgs Hello every one, since, i want to read messages from the topic "/cartesian/solution" whic

Dear ct2034 and zmk5, thanks for your message. Now, i have changed the syntax of node with class defined instead of usin

Issue with reading sensor_msgs Hello every one, since, i am read the data from sensor messages and declaring the variabl

Dear Peter, i want to read the data from topic " Cartesian?interface" but i am running the code, it showing me zeros onl

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Can you see; am i doing right? using namespace std; sensor_msgs::JointState JS; float joint_position[12] = {0,0,0,0,0

This is the output from the OpenSoT as sensor_msgs; name: [panda_joint_x, panda_joint_y, panda_joint_theta, schunk_pw70

Dear Peter, from open SOT i am getting the position, velocity and effort for each joint in a single message like traject

Dear Peter, thanks for the information. But actually, i am using OpenSOT software, which is a kind of cartesian planar a

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