Drone_vision.launch

<launch>
	<!-- Launches the AR.Drone driver -->
	<node name="ardrone_driver" pkg="ardrone_autonomy" type="ardrone_driver" output="screen" clear_params="true">
	    <param name="outdoor" value="0" /> <!-- If we are flying outdoors, will select more aggressive default settings -->
	    <param name="flight_without_shell" value="0" /> <!-- Changes internal controller gains if we are flying without the propeller guard -->
	    
	    <param name="altitude_max" value="3500" /> <!-- in millimeters = 3 meters = 9' -->
        <param name="altitude_min" value="500" /> <!-- in millimeters = 50cm = 2" -->
        <param name="euler_angle_max" value="0.1" /> <!-- maximum allowable body angle in radians = 5 degrees -->
        <param name="control_vz_max" value="1000" /> <!-- maximum z velocity in mm/sec = 0.2m/sec -->
	    <param name="control_yaw" value="3" /> <!-- maximum rotation rate in radians/sec = 40 degrees per second (1/9 rev/sec) -->
		<param name="realtime_navdata" value="true" />
		<param name="navdata_demo" value="1" />

	</node>
	<node name="image_receiver" pkg="Drone_vision" type="learning.py" required="true"/>
	<node name="controller" pkg="Drone_vision" type="controller.py" required="true"/>
	<node name="gui" pkg="Drone_vision" type="gui.py" required="true"/>

</launch>