Ed Venator's profile - activity

There are three ways to run a nodelet: Run the nodelet standalone using roslaunch: <launch> <node name="

If you have two subscribers, there is still a single queue, but instead of executing one callback on each message in the

getParam doesn't display an error message. It indicates failure by returning false, allowing the user (you) to decide wh

I suggest you follow the ROS Navigation Tutorials, which will walk you through setting up a full navigation stack on you

That sounds like an unhelpful error message. You should create an issue on the tracker.

I think your solution with message filters is pretty close to the solution you need, except that you're putting the subs

I assume that VCI_OpenDevice is in libcontrolcan.so. What directory is libcontrolcan.so located? CMake's link_directori

The data field of a PointCloud2 message contains the list of points encoded as a byte stream, where each point is a stru

How to get massage type in rospy? I want to write a library that works with multiple message types, is there a way how t

I suspect your very high measurement variances are causing singularities in the Kalman filter. Make sure the input covar

Create separate rotation and translation transforms and compose them, then broadcast the composed tf. E.g. in c++: my_tf

Yeah, it's not really better.

You can also override the OS in rosdep with the -o flag like rosdep install --from-paths src --ignore-src -o ubuntu:zest

According to this page on the wiki, you can use in-order or keyword arguments to initialize the values during constructi

What happens if you chain two filters like this? scan_filter_chain: - name: range1 type: LaserScanAngularBoundsFi

topic question ubuntu 16.04 ROS kinetic as per http://wiki.ros.org/ROS/Tutorials/UnderstandingTopics, i have listed my

topic question ubuntu 16.04 ROS kinetic as per http://wiki.ros.org/ROS/Tutorials/UnderstandingTopics, i have listed my

It looks like your hostname is ubuntu, and when your PC doesn't have a network connection configured, it can't ping itse

According to ROS Index, it looks like the razer_hydra package has been released for ROS Indigo. You should be able to in

What happens when you rostopic echo /rosout? How did you install ROS? apt-get? Which package(s) did you install?

rospack find hokuyo_node will tell you which package path it's using. The directories that ROS tools use to search for p

Is that the full output from rosdep? I usually get a string of dpkg-query like that, and then rosdep installs all of the

A topic is the way nodes communicate with each other. Think of it like a newsletter--the terminology for topics is exact

I don't know if TF can handle large time jumps like that. I wouldn't be surprised if it causes problems, but I wouldn't

Without knowing what code's running in that node, I can't say. If it's doing something with time, it's possible that it

It looks like you never build your package with catkin. This is necessary, even for python nodes, for rosrun to be able

how to execute python code in ROS I created a python file contain the code for the robot patrol around, however, I am no

RosJava - ByteMultiarray problem to create a publisher Hi Everyone. I'm trying to send using a bytemultiarray few bytes

Follow the instructions here

If you want to use Hydro in 14.04, you'll have to build it from source. Hydro depends on a lot of 12.04 systems packages

I've never run into that particular error. It looks like a memory corruption error. What node is throwing that?