rqt_graph crashes

asked 2014-09-16 07:44:33 -0500

Tomaszz
33 ●5 ●7 ●9

updated 2014-09-18 16:47:15 -0500

Dirk Thomas
16276 ●62 ●190 ●215

After running $ rosrun rqt_graph rqt_graph

i get the following error msg:

PluginHandlerDirect._restore_settings() plugin "rqt_graph/RosGraph#0" raised an exception:
Traceback (most recent call last):
  File "/opt/ros/indigo/lib/python2.7/dist-packages/qt_gui/plugin_handler_direct.py", line 116, in _restore_settings
    self._plugin.restore_settings(plugin_settings_plugin, instance_settings_plugin)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rqt_graph/ros_graph.py", line 202, in restore_settings
    self._refresh_rosgraph()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rqt_graph/ros_graph.py", line 226, in _refresh_rosgraph
    self._update_graph_view(self._generate_dotcode())
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rqt_graph/ros_graph.py", line 259, in _update_graph_view
    self._redraw_graph_view()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rqt_graph/ros_graph.py", line 292, in _redraw_graph_view
    same_label_siblings=True)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/qt_dotgraph/dot_to_qt.py", line 254, in dotcode_to_qt_items
    subgraph_nodeitem = self.getNodeItemForSubgraph(subgraph, highlight_level)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/qt_dotgraph/dot_to_qt.py", line 83, in getNodeItemForSubgraph
    bb = subgraph.attr['bb'].strip('"').split(',')
KeyError: 'bb'

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What version of these two packages do you use: rqt_graph and qt_dotgraph? Also please provide more information since you are likely doing more than what you described. E.g. which packages did you try to visualize in the graph?

Dirk Thomas ( 2014-09-18 16:49:56 -0500 )edit

Well, I'm not sure what do you mean by version of rqt_graph. I use ROS Indigo. Problems with rqt_graph started when using VREP together with ROS. For the first time it crashed when I played the simulation on VREP. Officially VREP doesn't support ROS Indigo. Now each rqt_graph run fails.

Tomaszz ( 2014-09-19 04:11:09 -0500 )edit

With "version" I mean the version of the Debian package you have installed. Please run "dpkg -l | grep rqt-graph" and "dpkg -l | grep qt-dotgraph" and post the result. My second question was: which packages did you try to visualize in the graph?

Dirk Thomas ( 2014-09-19 10:21:37 -0500 )edit

1/ ros-indigo-rqt-graph 0.3.9-0trusty-20140905-0110-+0000 amd64 ros-indigo-qt-dotgraph 0.2.26-0trusty-20140819-0222-+0000 amd64

2/ i tried to visualize vrep tutorials packages "ros_bubble_rob", "vrep_joy" etc

actually now it works fine :P I have restarted my laptop

Tomaszz ( 2014-09-20 05:04:31 -0500 )edit

I get exactly the same error message. I have ros-indigo-rqt-graph 0.3.9-0trusty-20140905-0309-+0000 i386 and ros-indigo-qt-dotgraph 0.2.26-0trusty-20140819-0326-+0000 i386, i don't use VREP. This happens even if no ros nodes are running, just a roscore.

Robopija ( 2014-09-26 10:23:30 -0500 )edit

I have the same problem. Restarting Ubuntu helps at first, but error came back. Installing ros-indigo-qt-gui-app and ros-indigo-qt-gui-core did not help for me so far.

ros-indigo-rqt-graph 0.3.10-0trusty-20141230-0525-+0000 amd64 ros-indigo-qt-dotgraph 0.2.26-0trusty-20141230-0049-+0000 amd64

VinceDietrich ( 2015-02-19 07:03:44 -0500 )edit

If anybody could come up with a minimal example to reproduce the issue it might be feasible to fix the problem.

Dirk Thomas ( 2015-02-19 12:57:03 -0500 )edit

Hello: I get the same problem. My versions are

ii ros-indigo-rqt-graph 0.3.10-0trusty-20141230-0525-+0000 amd64

ii ros-indigo-qt-dotgraph 0.2.26-0trusty-20141230-0049-+0000 amd64

and I am trying to use rqt_graph as on A Gentle Introduction to ROS (J.M. O'Kane) p24

Will Chamberlain ( 2015-02-25 23:38:51 -0500 )edit

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answered 2014-09-30 20:20:21 -0500

DataCrusader21
16 ●1 ●1

I can vouch for Tomaszz, restarting Ubuntu after installing rqt_graph and plugins fixes this issue.

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answered 2015-06-10 01:45:45 -0500

John Nagle
41 ●5 ●7 ●6

Working through the ROS tutorials with ROS Jade. Current system: Ubuntu 14.04 LTS / 64 bit. Default installation of ROS Jade. One patch: "https://github.com/ros-visualization/python_qt_binding/issues/24" "binding_helper fails when "future" package is installed"

Same problem as above, at "http://wiki.ros.org/ROS/Tutorials/UsingRqtconsoleRoslaunch", step 1.2.5, "roslaunching". File launches OK. Both "TurtleSim" windows open.

$ rostopic pub /turtlesim1/turtle1/cmd_vel geometry_msgs/Twist -r 1 -- '[2.0, 0.0, 0.0]' '[0.0, 0.0, -1.8]'

is issued per the tutorial instructions. The turtles start moving in circles as they should.

The next step is to run "rqt_graph". That crashes:

$ rqt_graph
PluginHandlerDirect._restore_settings() plugin "rqt_graph/RosGraph#0" raised an exception:
Traceback (most recent call last):
...
File "/opt/ros/jade/lib/python2.7/dist-packages/qt_dotgraph/dot_to_qt.py", line 83, in getNodeItemForSubgraph
bb = subgraph.attr['bb'].strip('"').split(',')
KeyError: 'bb'

So there's an easy way to reproduce the problem in ROS Jade. This is a standard tutorial.

After digging through the issues and sources, a fix, or at least a patch to make it not crash, was committed one day ago:

https://github.com/ros-visualization/...

Has that been through regression testing yet? Do I have to patch the installation manually, or is there some way to update the ROS Jade more cleanly? I don't want to build from source at this time. I just use a version where I can do all the tutorials without something blowing up.

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The package qt_gui_core has been fixed (0.2.28). The new debs are in the building repo ( http://www.ros.org/debbuild/jade.html... ). Once all downstream packages have finished rebuilding they will appear in ros-shadow-fixed and after a short soak time be synced to the ros repo.

Dirk Thomas ( 2015-06-10 09:48:45 -0500 )edit

just edit by manually ,then remove the file dot_to_qt.pyc, your modified file dot_to_qt.py will be generate new dot_to_qt.pyc, it will works.

shhu1993 ( 2015-06-14 06:54:06 -0500 )edit

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answered 2015-02-18 08:59:26 -0500

mukhachev
33 ●2 ●2 ●8

Under Ubuntu 14.04 it helped for me to install ros-indigo-qt-gui-app and ros-indigo-qt-gui-core

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