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2013-11-23 10:22:22 -0500 answered a question No Such Package/Stack

silly me ... I just needed to add the workspace directory to the ROS_PACKAGE_PATH variable.

2013-11-23 04:10:26 -0500 asked a question No Such Package/Stack

I'm working through the tutorials and I thought everything went well with building the "beginner_tutorials" package. But now I am returning to the tutorials to continue with the "create a publisher and subscriber node" tutorial and I get a "no such package/stack" error after issuing a "roscd beginner_tutorials" command.

The beginner_tutorials folder is in my "catkin_ws/src" folder:

~/catkin_ws/src/beginner_tutorials

I issued the catkin_make command while in the ~/catkin_ws directory and I thought that would result in building the "beginner_tutorials" package.

What did I do wrong? Is this the correct directory/file organization to employ?

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2013-11-11 15:15:36 -0500 answered a question rospack can't find package created with catkin_create_package

Thanks Tirjian, that was it exactly.

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2013-11-10 07:33:59 -0500 asked a question rospack can't find package created with catkin_create_package

I'm working through the beginner tutorials using ROS Hydro and I attempted to create my first package by running:

$ catkin_create_pkg beginner_tutorials std_msgs rospy roscpp

This produced no errors and appears to have created the associated files and folders. However, using rospack to find the newly created package doesn't work:

$ rospack find beginner_tutorials 
[rospack] Error: stack/package beginner_tutorials not found

What am I missing?

2013-11-10 05:20:51 -0500 answered a question Unmet Dependencies on Lubuntu 13.10 Desktop

I figured it out ... As I now realize, Lubuntu 13.10 does not use the Ubuntu 12.04 core. It uses the 13.10 core. duh. All I did was to reinstall Lubuntu, this time using the older 12.04 version, which is what ROS Hydro needs to work. Installation went fine and it seems to be working.

2013-11-08 15:10:10 -0500 received badge  Editor (source)
2013-11-08 15:03:10 -0500 asked a question Unmet Dependencies on Lubuntu 13.10 Desktop

I'm a newbie to ROS and Linux. I have Lubuntu 13.10 installed on my laptop and I want to install ROS. When I go to install ROS (Precise version), I get "unmet dependencies" and the install fails.

Should I be installing ROS on Lubuntu in the first place? This is an old laptop so I wanted as thin a version of Ubuntu as possible and I believe that Lubuntu 13.10 (Saucy Salamander) has the same core as Ubuntu 12.04 (Precise).

Am I headed in the right direction? How can I resolve these "unmet dependencies"? I believe the "sudo apt-get update" was successful.

Incidentally, these are the unmet dependencies I'm getting:

The following packages have unmet dependencies:
 ros-hydro-desktop-full : Depends: ros-hydro-desktop but it is not going to be installed
                          Depends: ros-hydro-mobile but it is not going to be installed
                          Depends: ros-hydro-perception but it is not going to be installed
                          Depends: ros-hydro-simulators but it is not going to be installed
E: Unable to correct problems, you have held broken packages.