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How can navigation be aborted even if goal is not reached?

asked 2011-11-08 20:20:15 -0500

Sabrina gravatar image

Hi,

how can I cancel navigation with move_base and stop the robot by sending a message or a service call even if the goal sent to move_base is not reached yet?

Regards, Sabrina

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answered 2011-11-09 04:10:47 -0500

bhaskara gravatar image

updated 2011-11-09 04:11:48 -0500

Or from the command line,

$ rostopic pub move_base/cancel actionlib_msgs/GoalID '{}'
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Thank you, that was the solution I was looking for.
Sabrina gravatar image Sabrina  ( 2011-11-09 17:29:29 -0500 )edit
5

answered 2011-11-09 00:36:01 -0500

DimitriProsser gravatar image

The navigation stack operates using actionlib. Thus, to communicate with move_base, you must use actionlib's ActionClient to send commands and receive feedback. For simplicity, you can use the following code:

typedef actionlib::SimpleActionClient<move_base_msgs::MoveBaseAction> NavClient;

class MyClass
{
  private:
      NavClient nav_client_;
  ...
}

MyClass::MyClass() : nav_client_("move_base", true) 
{
  ...
}

MyClass::cancelNavigation()
{
  nav_client_.cancelAllGoals();
}

For more advanced actionlib usage, you can find complete documentation on actionlib here.

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Thank you for your answer. This solution seems reasonable, but I'm looking for a more convenient way where no coding is needed. That's why I voted for bhaskara's answer.
Sabrina gravatar image Sabrina  ( 2011-11-09 17:33:33 -0500 )edit

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Asked: 2011-11-08 20:20:15 -0500

Seen: 1,102 times

Last updated: Nov 09 '11