Subscribe to circles-center-x

[tiberium24]

Hello, Do you know why i cant subscribe to circles? I am trying to get the last message but it says out of index.

%%% def callback(msg): result=PoseWithCovariance() result.pose.position.x=msg.circles[-1].center.x

def main():

rospy.init_node("republisher")
pub=rospy.Publisher("target_pos_lidar", PoseWithCovariance, queue_size=1000)
sub=rospy.Subscriber("raw_obstacles", Obstacles, callback)
r=rospy.Rate(10)
result=PoseWithCovariance()
while not rospy.is_shutdown():
    pub.publish(result)
    r.sleep()

[tysik]

Maybe sometimes you don't receive any circles in which case the index will be out of bounds.

Mateusz

wt., 3 lip 2018, 05:56 użytkownik tiberium24 notifications@github.com napisał:

Hello, Do you know why i cant subscribe to circles? I am trying to get the last message but it says out of index.

%%% def callback(msg): result=PoseWithCovariance() result.pose.position.x=msg.circles[-1].center.x

def main():

rospy.init_node("republisher") pub=rospy.Publisher("target_pos_lidar", PoseWithCovariance, queue_size=1000) sub=rospy.Subscriber("raw_obstacles", Obstacles, callback) r=rospy.Rate(10) result=PoseWithCovariance() while not rospy.is_shutdown(): pub.publish(result) r.sleep()

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[tiberium24]

Thanks i got it to work