jwin's profile - activity

Sometimes we save our ROS logs as text files and view them later when we need them. However, it can be difficult to parse everything when it's not in color. Is there any built-in ROS solution for view ROS log text files in the normal stdout color?

View text files of ROS logs in color Sometimes we save our ROS logs as text files and view them later when we need them.

Hi all. Was just wondering if message enum constants get included in the message size. For example, if I have a message that has a uint8 constant defined to be 1 and then the actual uint8 payload, would the message take up 8 bits or 16 bits?

Ah I see that's perfect then since the network bandwidth will only consist of the actual payload (except for the initial

Message size with defined constants Hi all. Was just wondering if message enum constants get included in the message siz

I'm going through the TF MessageFilter tutorial and I understand the code except for line 13:

tf_filter_->registerCallback( boost::bind(&PoseDrawer::msgCallback, this, _1) );

I'm more of a novice when it comes to using the boost libraries, but after reading some documentation, it seems that this line is creating a function object that equates to something of this form: msgCallback(this, _1) where this is the PoseDrawer object and _1 is a placeholder that will be substituted with the first argument provided to the function object (which I'm assuming is done by the TF library under the hood).

What I'm confused about is how you know to provide the this object and that the callback function needs an _1 placeholder. Is the _1 simply because the callback function (shown below) only takes one argument? If my callback function had no parameters, would I just remove the _1 argument when calling the function? Why is the this object necessary?

void msgCallback(const boost::shared_ptr<const geometry_msgs::PointStamped>& point_ptr)

@Wolf thanks it worked great. I know this post is old now, but which of the two options do you recommend? Linking to a s

Ok sorry about that. Do you think I should post this somewhere else? I posted here because this was code directly given

Ok sorry about that. Do you think I should post this somewhere else? I posted here because this was code directly given

Also, I looked at the Lambda functions tutorial you linked. Could you specify how my question is related? I don't think

Ok sorry about that. Do you think I should post this somewhere else?

Understanding registerCallback() from TF MessageFilter tutorial I'm going through the TF MessageFilter tutorial and I un

I also have this issue and I'm running ROS kinetic. However, according to this post, the user found the turtle_tf_messag

I also have this issue and I'm running ROS kinetic. However, according to this post, the user found the turtle_tf_messag

Ok thanks for the help. I'll give that a shot if my workaround starts to get annoying.

Right I've tried that too. In that case, <tab tab=""> doesn't produce any output (it doesn't tab-complete to anyth

Sorry I should have been more clear. rossrv show does have tab completion support, but it shows the output above. When I

Sorry I should have been more clear. rossrv show does have tab completion support, but it shows the output above. When I

I'm using ROS Kinetic and I'm running Ubuntu 16.04 on an x86 laptop. I installed ROS the way it was mentioned on the ROS

I'm using ROS Kinetic and I'm running Ubuntu 16.04 on an x86 laptop. I installed ROS the way it was mentioned on the ROS

Sorry I should have been more clear. rossrv show does have tab completion support, but it shows the output above. When I

rossrv show tab complete Is there a way to get rossrv show to have tab-complete functionality? Something like this would

rossrv show tab complete Is there a way to get rossrv show to have tab-complete functionality? Something like this would