shane's profile - activity

i want to send a 1-dim double array with the size of 4

hm, i see. and what do i write into my own defined message? double arrayname[4]?

and what if i want to publish an 1 dimensional array? do i just need to include "std_msgs/Float64MultiArray.h" or do i need something else?

hello reader,

do i need a msg-file when i want to write a publisher and a subscriber? and if yes, how do i have to integrate the file into the publisher-code and the subscriber-code?

thx in advance

hi at all,

easy question (or at least i hope so): how can I write a publisher which publishes an float64array? the problem is, i'm quite new to c++ so i don't understand all of the lines in the tutorial, where a string is published.

thx in advance

hello,

i want to use slam_gmapping for the robot. controlling it with the keyboard works great but when i try to tell him a 2dnav goal, the robot just twists a little and then stops. also the map isn't updating to the data the sensor sends. what can be the reason? i've followed http://www.ros.org/wiki/navigation/Tutorials/RobotSetup/. and also a strange thing is, that it tells me he "can't find a map, trying again" and that the move_base.launch file subscribes to the topic laser_scan_sensor although i've written: laser_scan_sensor: {sensor_frame: laserfront_link, data_type: LaserScan, topic: scan, marking: true, clearing: true} into the move_base.launch file.

hello,

i want to tell a roboter where to move to in rviz (with the 2D Nav Goal) and simulate that in gazebo. does that work? and if yes, how?

thanks in advance

ps.: sry for the noobie-question, but i really don't what to do.

hi,

how can i create a .launch file? is there anywhere a useful tutorial or something?

thx in advance

i have a sick_s300 sensor on my simulated robot but it still doesn't work. and is it normal that the laser scan moves in the rviz?

oh, that sounds logical. and how can i make the robot perceive the gazebo-world?

hi,

i have a question about the synchronisation between gazebo and rviz: i have set up a world in gazebo with lots of obstacles but my rviz doesn't "see" any of them. i really don't know how to fix this.

thx