rosros.rospify.topics.Subscriber Class Reference

Stand-in for `rospy.Subscriber`, wrapping the creation of ROS2 subscription. More...

Inheritance diagram for rosros.rospify.topics.Subscriber:

Public Member Functions
	__new__ (cls, name, data_class, callback=None, callback_args=None, queue_size=None, buff_size=None, tcp_nodelay=None)
	Returns rclpy.subscription.Subscription instance, supporting `AnyMsg`.
	__subclasshook__ (cls, C)
	Returns true if C is a ROS2 subscription class, else `NotImplemented`.

Detailed Description

Stand-in for `rospy.Subscriber`, wrapping the creation of ROS2 subscription.

Definition at line 71 of file topics.py.

Member Function Documentation

__new__()

rosros.rospify.topics.Subscriber.__new__	(		cls,
			name,
			data_class,
			callback = None,
			callback_args = None,
			queue_size = None,
			buff_size = None,
			tcp_nodelay = None
	)

Returns rclpy.subscription.Subscription instance, supporting `AnyMsg`.

Parameters

name	graph resource name of topic, e.g. 'laser'
data_class	data type class to use for messages, e.g. std_msgs.msg.String
callback	function to call ( fn(data)) when data is received. If callback_args is set, the function must accept the callback_args as a second argument, i.e. fn(data, callback_args).

Note

Additional callbacks can be added using add_callback().

Parameters

callback_args	additional arguments to pass to the callback. This is useful when you wish to reuse the same callback for multiple subscriptions.
queue_size	maximum number of messages to receive at a time. This will generally be 1 or None (infinite, default).
buff_size	ignored (ROS1 compatibility stand-in)
tcp_nodelay	ignored (ROS1 compatibility stand-in)

Definition at line 93 of file topics.py.

__subclasshook__()

rosros.rospify.topics.Subscriber.__subclasshook__	(		cls,
			C
	)

Returns true if C is a ROS2 subscription class, else `NotImplemented`.

Definition at line 111 of file topics.py.

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The documentation for this class was generated from the following file:

• rosros/rospify/topics.py