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Potential problem of rxgraph under Ubuntu 12.04 fuerte?

asked 2012-07-16 03:24:37 -0600

updated 2012-07-16 04:26:40 -0600

joq gravatar image

Hi all,

recently i noticed that rxgraph has some problems and produces the following error message:

 File "/opt/ros/fuerte/lib/python2.7/dist-packages/rxgraph/", line 125, in run
    info_text = get_info_text(self.selection_url)
  File "/opt/ros/fuerte/lib/python2.7/dist-packages/rxgraph/", line 59, in get_info_text
    return rosnode.get_node_info_description(node_name) + rosnode.get_node_connection_info_description(node_api)
TypeError: get_node_connection_info_description() takes exactly 2 arguments (1 given)

This Error is new to me and appeared first time after a ROS updated (ca. 10'th of July). After this error rxgraph is not updatimng any longer the screen, i.e. you can still see the old graph displayed but now response at all to updates on the ROS-Network-Graph.

Here my question: Does any one else have this issue and if yes which OS and ROS version are involved?

As written in the title for me this is Ubuntu 12.04 64Bit fuerte.

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answered 2012-07-16 03:40:54 -0600

KruseT gravatar image

updated 2012-07-16 04:13:36 -0600

That would be a good item for a ticket.

The breakage was caused by this change to ros_comm:

r16826 | dthomas | 2012-07-05 22:29:31 +0200 (Thu, 05 Jul 2012) | 1 line

improved output of rosnode info (#3995)

It seems rxgraph in the rx package is already fixed, but was not released, so the next release should fix it anyway.

In the meantime, you can also have a look at rosgui / rqt_gui, which has a replacement for rxgraph.

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The rx package has been fixed about five days ago. It will be available as ros-fuerte-rx-1.8.9 as soon as the next sync to the public package repository is performed (likely within the next days).

Dirk Thomas gravatar image Dirk Thomas  ( 2012-07-16 21:56:28 -0600 )edit

The corresponding bug report can be found at and the change log for rx ( lists the changes of the upcoming version.

Dirk Thomas gravatar image Dirk Thomas  ( 2012-07-16 21:59:17 -0600 )edit

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Asked: 2012-07-16 03:24:37 -0600

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Last updated: Jul 16 '12