Nicolás,
>From your console output it looks like gazebo is looking for a file
/home/robot/src/autnavarc/ros-ana-pkg/wheelchair/fete_nico_mapa.png
but you mentioned you had saved map.png in
/home/robot/src/ros/stacks/simulator_gazebo/gazebo_worlds/Media/materials/textures
possibly double check your parameter "walls" containing walls.model and make
sure the image tag contains only the file name, e.g.
fete_nico_mapa.png
and your grayscale map image file is located at
/home/robot/src/ros/stacks/simulator_gazebo/gazebo_worlds/Media/materials/textures/fete_nico_mapa.png
John
2010/11/9 Nicolás Alvarez Picco
> Hi John,
> Thanks for answering, I ve tried with that you suggest me and also with
> executing in a new terminal "convert myfile.pgm myfile.png " but it is still
> giving this message:
>
> Param [quickStep] is deprecated: [replace quickStep with stepType]
> Param [quickStepIters] is deprecated: [replace quickStepIters with
> stepIters]
> Param [quickStepW] is deprecated: [replace quickStepW with stepW]
> [ INFO] [1289322971.691105690]: Obtained obstacle map.
> Gazebo successfully initialized
> Error:
> [/home/robot/src/ros/stacks/simulator_gazebo/gazebo/build/gazebo-r8947/server/rendering/Image.cc:136]
> Unable to open image
> file[/home/robot/src/autnavarc/ros-ana-pkg/wheelchair/fete_nico_mapa.png]
> /home/robot/src/ros/stacks/simulator_gazebo/gazebo/build/gazebo-r8947/server/physics/MapShape.cc:117
> : Exception: Unable to open image
> file[/home/robot/src/autnavarc/ros-ana-pkg/wheelchair/fete_nico_mapa.png]
>
> Main simulation loop failed
> /home/robot/src/ros/stacks/simulator_gazebo/gazebo/build/gazebo-r8947/server/physics/MapShape.cc:117
> : Exception: Unable to open image
> file[/home/robot/src/autnavarc/ros-ana-pkg/wheelchair/fete_nico_mapa.png]
>
> Service call failed: transport error completing service call: unable to
> receive data from sender, check sender's logs for details
> spawning success None
> [gazebo-2] process has died [pid 3701, exit code -11].
> log files:
> /home/robot/.ros/log/0bd3add0-ec25-11df-a9ef-0026b9e75b87/gazebo-2*.log
> [xml2factor_walls-3] process has finished cleanly.
> log file:
> /home/robot/.ros/log/0bd3add0-ec25-11df-a9ef-0026b9e75b87/xml2factor_walls-3*.log
> [ INFO] [1289322976.775538978, 0.958000000]: Server up
> [ INFO] [1289322976.777365139, 0.958000000]: Spinning now
>
>
>
> I saved my map in
>
>
> /home/robot/src/ros/stacks/simulator_gazebo/gazebo_worlds/Media/materials/textures
>
> Any idea?
>
> Thanks
>
> Nicolas
>
>
> ------------------------------
> From: johnhsu@willowgarage.com
> Date: Tue, 9 Nov 2010 07:29:20 -0800
> To: ros-users@code.ros.org
> Subject: Re: [ros-users] Gazebo - spawn_model
>
>
> Hi Nicolas,
>
> I don't think gazebo can read pgm files. Try opening your map file in
> gimp, save it as a grayscale .png file. Place the file in a package that
> exports its prefix to gazebo_media_path (for example take a look at
> manifest.xml for gazebo_worlds), under a subdirectory
> [package_name]/Media/materials/texture/walls.png.
>
> Then try your spawn again. Note that if the map is complicated, it might
> take gazebo's recursive rectangle wall builder more than 30 sec. to
> construct the model.
>
> John
>
>
>
> 2010/11/9 Nicolás Alvarez Picco
>
> Hi Everybody!!!
>
> I have made a map with gmapping, it is a file 'map.pgm'. Now I want to
> spawn its walls, for that I am using this launch file:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> args="-gazebo -param walls -model walls" respawn="false" output="screen" />
>
>
>
>
>
> Where the file walls.model is
>
>
> xmlns:model="http://playerstage.sourceforge.net/gazebo/xmlschema/#model"
>
> xmlns:body="http://playerstage.sourceforge.net/gazebo/xmlschema/#body"
> xmlns:geom="http://playerstage.sourceforge.net/gazebo/xmlschema/#geom" >
>
> true
>
> -8 -8 0
>
> map.pgm
> 2
> 200
> 1
> false
> 0.04
> 0 0 0
> Gazebo/Rocky
>
>
>
>
> The thing is that nothing happens in gazebo.
> Any clue?? Does exist any documentation about how to spawn walls of a map??
>
> Many thanks
>
> Nicolas
>
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