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cant navigate the playground

asked 2014-08-06 16:58:04 -0500

haider gravatar image

im using ros hydro, ubuntu 12.04 .. im working on Make a map and navigate with it using gazebo http://wiki.ros.org/turtlebot_simulat... . but i cant navigate the playground, i got this error [ERROR] [1406213257.254638543]: Map_server could not open ~/home/hattan_map5. process[navigation_velocity_smoother-4]: started with pid [9439] [map_server-2] process has died [pid 9329, exit code 255, cmd /opt/ros/hydro/lib/map_server/map_server ~/home/hattan_map5 __name:=map_server __log:=/home/hattan/.ros/log/7297b3bc-1341-11e4-a206-74e5433742d1/map_server-2.log]. log file: /home/hattan/.ros/log/7297b3bc-1341-11e4-a206-74e5433742d1/map_server-2*.log

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answered 2014-08-06 21:15:39 -0500

ahubers gravatar image

updated 2014-08-06 21:20:28 -0500

I believ this error is caused by the pathing described here

~/home/hattan_map5

Try using the absolute path to where this is located (you can find this out by typing pwd in the directory where the map is). Additionally, when you created a map using the map_server, it should have saved to two files: one with the extension .pgm and one with the extension .yaml. Make sure to run roslaunch turtlebot_gazebo amcl_demo.launch map_file:=<full path to your map file>.yaml, and make certain that the image attribute in the.yaml file correctly points to the path of the .pgm.

To clarify, if your files are located at /home/hattan/hattan_map5.yaml and /home/hattan/hattan_map5.pgm, then inside the .yaml file should be the line image: hattan_map5.pgm, and you would run roslaunch turtlebot_gazebo amcl_demo.launch map_file:=/home/hattan/hattan_map5.yaml

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thank you very much . it works very well

haider gravatar image haider  ( 2014-08-07 02:57:29 -0500 )edit

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Asked: 2014-08-06 16:58:04 -0500

Seen: 774 times

Last updated: Aug 06 '14