bug in launch file vision_visp stack

Question

Hi, I'm debugging and trying to run a launch file in vision_visp stack which is tutorial.launch

  <node pkg="visp_tracker" type="client" name="tracker_mbt_client">
    <param name="model_path" value="package://visp_tracker/models" />
    <param name="model_name" value="laas-box" />

in parameter "model_path" value is "package://something" -> what's this syntax?? I've replaced with the full path but still didn't work

I believe this is the problem, because from the output:

process[tf_localization-6]: started with pid [18717]
terminate called after throwing an instance of 'std::runtime_error'
  what():  Failed to load the model /home/airlab/SONLE/stacks/vision_visp/visp_tracker/models/laas-box/laas-box.wrl
Do you use resource_retriever syntax?
I.e. replace /my/model/path by file:///my/model/path

I've already fixed one bug in this launch file

 <node pkg="rosbag" type="rosbag" name="rosbag" args="play --clock -l
  $(find visp_tracker)/bag/tutorial-static-box.bag"/>

where type="rosbag" is not correct, there's no rosbag executable in the package but "play" => changed to:

<node pkg="rosbag" type="play" name="rosbag_routine" args=" --clock -l
      $(find visp_tracker)/bag/tutorial-static-box.bag"/>

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Originally posted by roskidos on ROS Answers with karma: 110 on 2012-10-19

Post score: 1

Answer 1

So what exactly is your question?

Changing package:// to a full path is always a bad idea. If you want roslaunch to put in the path to a package, use $(find package). URIs of the form package:// are normally resolved using resource_retriever inside the node.

If you have bug reports or patches, it's normally best to file a ticket at the package's bug tracker.

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Originally posted by Lorenz with karma: 22731 on 2012-10-19

This answer was ACCEPTED on the original site

Post score: 0

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Original comments

Comment by roskidos on 2012-10-19:
"normally best to file a ticket at the package's bug tracker" -> thank you for this guide!

Comment by roskidos on 2012-10-19:
"package://something -> what's this syntax" -> I mean this question. Is this the correct syntax?? from where? resource_retriever?

Comment by roskidos on 2012-10-19:
I think I've just seen the syntax in resource_retriever page of ROS. Thank you!!

Comment by roskidos on 2012-10-19:
I've tried to change from to but still no work

Comment by adreno on 2014-06-27:
Hey, I am having the same problem...any solution for this ?