ros-visualization/rqt_topic

rqt_topic's Issues

Inconsistent ordering of sensor_msgs/PointField

Components of sensor_msgs/PointField are displayed in inconsistent order:

Releasing rqt_topic for crystal

@dirk-thomas This should be ready for release. If you invite me to collaborate on the release repo I can take care of getting that out.

[ros 2][Topic Monitor] Don't print `array('d', ...)` for sequences

To reproduce:

# Terminal 1
ros2 launch dummy_robot_bringup dummy_robot_bringup.launch.py

# Terminal 2
rqt

• In rqt, open the "Topic Monitor" plugin (Plugins->Topics->Topic Monitor)
• Subscribe to /joint_state.
• The position/velocity/effort elements will be logged like

position    sequence<double>    array('d', [0.60123213, 0.60123213])
velocity    sequence<double>    array('d')
effort      sequence<double>    array('d')

It would be nicer to see:

position    sequence<double>    [0.60123213, 0.60123213]
velocity    sequence<double>    []
effort      sequence<double>    []

TypeError with Python3 ros distro and rqt

TL;DR Please merge #7 as it fixes a python3 related bug

I'm running a source-compiled python3 ROS distro with rqt and moveit.
When listening to JointState Messages, rqt complains:

[ERROR] [1577992899.623362]: bad callback: <bound method TopicInfo.message_callback of <rqt_topic.topic_info.TopicInfo object at 0x7f8c05e47ef0>>
Traceback (most recent call last):                                                                                                                                         
  File "/home/user/ros2/melodic/lib/python3.7/site-packages/sensor_msgs/msg/_JointState.py", line 113, in serialize                                                      
    buff.write(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))                                                                          
TypeError: string argument expected, got 'bytes' 

Applying #7 fixes this issue (StringIO buffer is replaced with BytesIO on Python 3`).

Enable scale item column

In rqt plugin topic monitor, we can't scale the width of item column, this lead that we can't see every detail easily.

reference to ros-visualization/rqt#125

Release for python3 fix

Would it be possible to create a release including the fix for python3 in commit 8d9c5a6?

Open source rewrite of rqt_topic

@wjwwood not sure who the maintainer is of this repo but I've got approval to open source our (Apex.AI's) version of rqt_topic.

It's a major rewrite and most likely would be easiest with one big PR.

Before making it I first wanted to check if it'd even be accepted here.

Also, not sure if it's possible but I could also be added as a maintainer here for the repo if it is now orphaned.

Just let me know how you'd like to proceed - excited to give it back to the community!

Update Frequency of topic values

The values of the monitored topics updates around every second in the monitor. Is there a way to get faster update?
I have verified the realtime values using rostopic echo.

rqt topic monitor shows unknown for msgs with diffrent qos profile

how can we set QOS proflie for rqt topic monitor

C++ version of rqt_topic

I am trying to develop my own GUI for ROS. It is somewhat like rqt but with more specific plugins for my robot.
I build it using qt creator, and since I'm pretty new in ROS I tried to combine some sources to the GUI with my limited knowledge.
I use C++ to make the GUI, and I want to add a plugin to visualize the rostopic data (at least for diagnostic), and this is the plugin that I have been searching for.
It seems the code here is written in python, and I am having difficulties on combining them because of my lack understanding of python.
Either I need to translate this the rqt_topic from python to c++, or create a callback function in my GUI to publish "rostopic echo /diagnostics".
Do you have any ideas, suggestion, or reference?
Thank you.

sorting bandwidth

Sorting the topics based on Bandwidth is not working properly. Could you please address this issue? it might have to do with the sort not considering the units (e.g. MB vs KB).

rqt_topic crashes when cleaning up old topics.

Traceback (most recent call last):
  File "/opt/ros/melodic/lib/python3.7/site-packages/rqt_topic/topic_widget.py", line 183, in refresh_topics
    for topic_name in self._topics.keys():
RuntimeError: dictionary changed size during iteration

Simply removing line 197 of topic_widget fixes the issue. I'm not sure why the old topic was being deleted from the dict, since the next line of code overwrites the _topics dict with the new one. Is there some reason self._topics needs to be empty before it's overwritten?

show leaf topics in topic monitor

Hi,

I would like to show all topics, including the topics without subs or pubs (leaf topics).

Is there a possibility for this in the rqt topic monitor?

Thanks

items in lists are not removed if list in message is empty

When a message contains a list and the list has reduced to zero, the old list items are still shown. As the code which removes the list items is not reached when the list is empty.

The code that executes the deletion is

rqt_topic/src/rqt_topic/topic_widget.py

Lines 258 to 262 in befebd5

	# remove obsolete children
	if len(message) < self._tree_items[topic_name].childCount():
	for i in range(len(message), self._tree_items[topic_name].childCount()):
	item_topic_name = topic_name + '[%d]' % i
	self._recursive_delete_widget_items(self._tree_items[item_topic_name])