random_point.py

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#!/usr/bin/env python
 
import roslib
import rospy
from geometry_msgs.msg import PointStamped
from random import random
def main():
    rospy.init_node("random_point")
    pub = rospy.Publisher("/random_point", PointStamped, queue_size=1)
    while not rospy.is_shutdown():
        msg = PointStamped()
        msg.header.stamp = rospy.Time.now()
        msg.point.x = random() * 100;
        msg.point.y = random() * 100 + 100;
        msg.point.z = random() * 100 + 200;
        pub.publish(msg)
        rospy.sleep(0.01)
 
 
if __name__ == "__main__":
    main()