Public Member Functions
def	__init__
def	callback
def	custom_strify_message
Public Attributes
	count
	done
	echo_all_topics
	field_filter
	filter_fn
	first
	last_msg_eval
	last_topic
	max_count
	msg_eval
	offset_time
	plot
	prefix
	sep
	str_fn
	suffix
	topic

Detailed Description

Callback instance that can print callback data in a variety of
formats. Used for all variants of rostopic echo

Definition at line 187 of file ros_topic_listener.py.

Constructor & Destructor Documentation

def ros_topic_listener.CallbackEcho.__init__	(	self,
		topic,
		msg_eval = `None`,
		plot = `False`,
		filter_fn = `None`,
		echo_clear = `False`,
		echo_all_topics = `False`,
		offset_time = `False`,
		count = `None`,
		field_filter_fn = `None`
	)

:param plot: if ``True``, echo in plotting-friendly format, ``bool``
:param filter_fn: function that evaluates to ``True`` if message is to be echo'd, ``fn(topic, msg)``
:param echo_all_topics: (optional) if ``True``, echo all messages in bag, ``bool``
:param offset_time: (optional) if ``True``, display time as offset from current time, ``bool``
:param count: number of messages to echo, ``None`` for infinite, ``int``
:param field_filter_fn: filter the fields that are strified for Messages, ``fn(Message)->iter(str)``

Definition at line 193 of file ros_topic_listener.py.

Member Function Documentation

def ros_topic_listener.CallbackEcho.callback	(	self,
		data,
		callback_args,
		current_time = `None`
	)

Callback to pass to rospy.Subscriber or to call
manually. rospy.Subscriber constructor must also pass in the
topic name as an additional arg
:param data: Message
:param topic: topic name, ``str``
:param current_time: override calculation of current time, :class:`genpy.Time`

Definition at line 249 of file ros_topic_listener.py.

def ros_topic_listener.CallbackEcho.custom_strify_message	(	self,
		val,
		indent = `''`,
		time_offset = `None`,
		current_time = `None`,
		field_filter = `None`,
		type_information = `None`
	)