navigation-stack-actionlib

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Hi every body

I am using actionlib to move the bsae of the robot to certain coordinates.

I give the coordinates as follows:

move_base_msgs::MoveBaseGoal goal;

goal.target_pose.pose.position.x = 2;

goal.target_pose.pose.position.y = 6;

double th=D2R*(atan2( msg.pose.pose.orientation.y, msg.pose.pose.orientation.y));

geometry_msgs::Quaternion gth = tf::createQuaternionMsgFromYaw(th);

goal.target_pose.pose.orientation =gth;

Then the robot moves to the desired coordinates, however the robot has a rotation behaviour when it reaches the goal.

How can avoid that rotation? I just want the robot to arrive to the desired position and stay there without any rotation.

In advance thank you :)