JoSo's profile - activity

source catkin_ws/devel/setup.bash

after catkin_make

Amazing! So dumb. I remember doing it when I initially created the workspace but when I deleted the build and devel folders and re-made I must not have. Thanks @sterlingm

Hello ROS community,

I have mainly been working on my laptop but have recently installed hydro on a desktop with Ubuntu 13.04. I installed ROS desktop-full version and ran the install for MoveIt! I transferred my packages to this desktop with a memory stick and moved them to the catkin_ws that was created there.

After running catkin_make I tried to launch the package but I get an error saying that "[file] is not a launch file nor is [package] a package". I see this post and tried to delete the build and devel folders and run caktkin_make once again but the same error message is produced. The symptoms in that post were different than mine though.

I feel like there is something silly that I'm missing here. Any and all help is appreciated.

Thanks, Jordan

@cmeaclem Sorry, saving the Rviz configuration will save the display tabs that you have added to the left window pane. Handy, but not the answer I believe you need. See above for more accurate solution

The solution for me was to declare both the parent frame and child frame as base_link in the SRDF.

<virtual_joint name="fixed_frame" type="fixed" parent_frame="base_link" child_link="base_link" />

This removed the Global Status error, now saying "OK" and the TF tree is populated! Moving on to bigger and harder things

Hi all and thanks for checking this out.

I have made a MoveIT! package using my urdf and went through the Setup Assistant tabs accordingly. After launching my robot I can motion plan and incorporate a scene object to be planned around, but the Global Status is giving me this error. I believe it has to do with the virtual joint set up but I'm not entirely sure.

No tf data. Actual error: Fixed Frame [base_link] does not exist

The base_link is the first link in my robot and the child of the virtual joint. When I add the TF display to Rviz and expand it, it's empty. This is preventing me from using rostopic echo /tf (where, right now, the output is a repeating empty Transform [] ) and also using rosbag record which I would like to use to record some simple paths for playback later.

Can someone tell me if this is in fact a virtual joint error or perhaps somewhere else I need to be looking? I am new to ROS so any links would be appreciated.

Respectfully,

Jordan

@cmeaclem,

If, in Rviz, you navigate to the Motion Planning tab 'Scene Object' there is a window and button that lets you import a file. Once the file is loaded you can move your object in the world using the gui or imarkers and then save the config.

Hope this helps

Update: You can follow this to save the scene to the warehouse database. Then you can load from the same tab after launching. The connect button does need to be clicked a few times in order to connect and you may need to change the warehouse database path to save. From then on, you should just need to load the scene from the Motion Planning > Stored Scene tab.

Before I made the change to the planning groups the checkbox worked, now I don't need it. I will look into IKFast plugin more to get my arm working smoother. There are 6 DOF in the urdf 'iarm_ed.urdf'. base_joint, shoulder, elbow, wrist_roll, wrist_flex, and gripper_joint. Thanks again!

@gvdhoorn thanks for the info. What I did was remove the 'gripper' planning group in the SA and change the 'arm' to a chain that includes all the pieces. Which I still don't quite get; how would the chains be attached to one another if there isn't an overlapping link somewhere?

Hey, I'm a noobie trying this same tutorial. are you setting the within that launch file? I would like to use my custom arm robot urdf with the joint state publisher so I can manipulate the arm in Rviz using the interactive markers. Any thoughts?

I am also a newbie and this worked for me but I don't quite understand. I have sourced 'source /opt/ros/hydro/setup.bash to my ~/.bashrc file so the ROS commands should work each time and they do, but why do I need to source if I'm already working in that directory?

I reverted back to the original Python that came with Ubuntu 13.04 and everything worked. I was able to go through the beginner's tutorials with success. Thanks. As a side note, my issues with opening the Rviz plugin with MOVEIT! also cleared. Heard on the block quote.

Hi, I'm new to Ubuntu/Linux and I am trying to install ROS. I am following the instructions but run into a cmake error when I run catkin_make. Here's the output from that command. It seems that there are similar problems but I don't see the exact same error message in other posts. Any help would be appreciated and thanks in advance.

joroso2121@ubuntu:~/catkin_ws$ catkin_make
Base path: /home/joroso2121/catkin_ws
Source space: /home/joroso2121/catkin_ws/src
Build space: /home/joroso2121/catkin_ws/build
Devel space: /home/joroso2121/catkin_ws/devel
Install space: /home/joroso2121/catkin_ws/install
####
#### Running command: "cmake /home/joroso2121/catkin_ws/src -DCATKIN_DEVEL_PREFIX=/home/joroso2121/catkin_ws/devel -DCMAKE_INSTALL_PREFIX=/home/joroso2121/catkin_ws/install" in "/home/joroso2121/catkin_ws/build"
####
-- Using CATKIN_DEVEL_PREFIX: /home/joroso2121/catkin_ws/devel
-- Using CMAKE_PREFIX_PATH: /opt/ros/hydro
-- This workspace overlays: /opt/ros/hydro
-- Using PYTHON_EXECUTABLE: /usr/local/bin/python
-- Python version: 2.7
-- Using Debian Python package layout
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/joroso2121/catkin_ws/build/test_results
-- Found gtest sources under '/usr/src/gtest': gtests will be built
ImportError: "from catkin_pkg.package import parse_package" failed: No module named catkin_pkg.package
Make sure that you have installed "catkin_pkg", it is up to date and on the PYTHONPATH.
CMake Error at /opt/ros/hydro/share/catkin/cmake/safe_execute_process.cmake:11 (message):
  execute_process(/usr/local/bin/python
  "/opt/ros/hydro/share/catkin/cmake/parse_package_xml.py"
  "/opt/ros/hydro/share/catkin/cmake/../package.xml"
  "/home/joroso2121/catkin_ws/build/catkin/catkin_generated/version/package.cmake")
  returned error code 1
Call Stack (most recent call first):
  /opt/ros/hydro/share/catkin/cmake/catkin_package_xml.cmake:63 (safe_execute_process)
  /opt/ros/hydro/share/catkin/cmake/all.cmake:143 (_catkin_package_xml)
  /opt/ros/hydro/share/catkin/cmake/catkinConfig.cmake:20 (include)
  CMakeLists.txt:52 (find_package)
-- Configuring incomplete, errors occurred!
Invoking "cmake" failed
joroso2121@ubuntu:~/catkin_ws$