**MY QUESTION :**
Do ROS topics still properly communicate (subscribe/publish) in the following situation, even though I DID NOT run executables by rosrun/roslaunch?
If not, is there way to run ROS executables without using rosrun/roslaunch?
**SITUATION :**
By running ```catkin biuld ```,
executables are created as (~/catkin_ws/devel/lib/PROJECT_NAME/sample_node)
If I try to run the execuatble as follows, it prints seemingly okay results on screen.
```
./catkin_ws/devel/lib//sample_node
```
(```roscore``` runs somewhere anyway.)
**NECESSITY :**
I want to add ROS publish function in my pre-developed code, which cannot be run by rosrun/roslaunch because it contains other pthreads.
↧
Running executables without using rosrun or roslaunch ??
↧
Running executables without using rosrun or roslaunch ??
**MY QUESTION :**
Do ROS topics still properly communicate (subscribe/publish) in the following situation, even though I DID NOT run executables by rosrun/roslaunch?
If not, is there way to run ROS executables without using rosrun/roslaunch?
**SITUATION :**
By running ```catkin biuld ```,
executables are created as (~/catkin_ws/devel/lib/PROJECT_NAME/sample_node)
If I try to run the execuatble as follows, it prints seemingly okay results on screen.
```
./catkin_ws/devel/lib//sample_node
```
(```roscore``` runs somewhere anyway.)
**NECESSITY :**
I want to add ROS publish function in my normal executable file, which cannot be runned by rosrun/roslaunch because it contains other pre-developed threads.
↧
↧
.msg Module not being found
I am running ROS Indigo on Ubuntu 14.04. Here is my package and cmake file:
CMAKELIST:
cmake_minimum_required(VERSION 2.8.3)
project(semantic_label_publisher)
## Find catkin macros and libraries
## if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz)
## is used, also find other catkin packages
find_package(catkin REQUIRED COMPONENTS
rospy
std_msgs
message_generation
)
## Generate messages in the 'msg' folder
add_message_files(
FILES
SemLabel.msg
# Message2.msg
)
## Generate services in the 'srv' folder
# add_service_files(
# FILES
# Service1.srv
# Service2.srv
# )
## Generate actions in the 'action' folder
# add_action_files(
# FILES
# Action1.action
# Action2.action
# )
## Generate added messages and services with any dependencies listed here
generate_messages(
DEPENDENCIES
std_msgs # Or other packages containing msgs
)
###################################
## catkin specific configuration ##
###################################
## The catkin_package macro generates cmake config files for your package
## Declare things to be passed to dependent projects
## INCLUDE_DIRS: uncomment this if you package contains header files
## LIBRARIES: libraries you create in this project that dependent projects also need
## CATKIN_DEPENDS: catkin_packages dependent projects also need
## DEPENDS: system dependencies of this project that dependent projects also need
catkin_package(
# INCLUDE_DIRS include
# LIBRARIES semantic_label_publisher
CATKIN_DEPENDS rospy std_msgs
# DEPENDS system_lib
)
###########
## Build ##
###########
## Specify additional locations of header files
## Your package locations should be listed before other locations
# include_directories(include)
include_directories(
${catkin_INCLUDE_DIRS}
)
package.xml File:
semantic_label_publisher 0.0.0 The semantic_label_publisher package xxx TODO catkin rospy std_msgs message_generation message_runtime rospy std_msgs
↧
OpenCV difference between roslaunch and rosrun
OS: Ubuntu 16.04.2 LTS Xenial
ROS: Kinetic.
OPenCV: 3.2.0-dev
Python 2.7.12
ROS_ROOT=/opt/ros/kinetic/share/ros
ROS_PACKAGE_PATH=/home/odroid/ros_ws/src:/opt/ros/kinetic/share
ROS_MASTER_URI=http://localhost:11311
ROSLISP_PACKAGE_DIRECTORIES=/home/odroid/ros_ws/devel/share/common-lisp
ROS_DISTRO=kinetic
ROS_ETC_DIR=/opt/ros/kinetic/etc/ros
If I run a python script through a launch file, OpenCV cannot open a camera, but running it manually openCV works fine.
Here’s the bare bones Code Snippet where it works/fails.
print cv2.__version__
camera=cv2.VideoCapture("/dev/video8")
print camera
if not camera.isOpened():
camera=None
print "No camera"
return camera
Here’s the line from the launch file:
No camera….
Notice it sets up a camera Object, but it fails to open.
However if I kill the specific node and then re-run it manually from a rosrun command: like this:
odroid@fish01:~$ rosnode kill /whisker_sensor ; rosrun ros_whisker_sensor whisker_sensor.py
killing /whisker_sensor
killed
3.2.0-dev
136 0.723058982284
136 0.723058982284
134 0.731470868094
It passes the isOpened() check and starts dumping the data I’m looking for from a processed image.
Does anyone have any thoughts as to why `camera.isOpened()` fails under a roslaunch but works under a rosrun? Is there any way I can get more informative information out of the camera function? I have a feeling its a path or library issue, but I can't figure out what's different between the launch file and run approaches.
↧
ROSRUN can't find EXECUTABLE
Hello, I am using kinetic and I am trying to run a simple publisher and subscriber.
the cmakelists.xml has the following code.
cmake_minimum_required(VERSION 2.8.3)
project(mastering_ros_demo_pkg)
cmake_policy(SET CMP0046 OLD)
find_package(catkin REQUIRED COMPONENTS
actionlib
actionlib_msgs
roscpp
std_msgs
)
include_directories(
include
${catkin_INCLUDE_DIRS}
)
add_executable(demo_topic_publisher src/demo_topic_publisher.cpp)
add_executable(demo_topic_subscriber src/demo_topic_subscriber.cpp)
add_dependencies(demo_topic_publisher ${mastering_ros_demo_pkg}_gencfg)
add_dependencies(demo_topic_subscriber ${mastering_ros_demo_pkg}_gencfg)
target_link_libraries(demo_topic_publisher ${catkin_LIBRARIES})
target_link_libraries(demo_topic_subscriber ${catkin_LIBRARIES})
after running rosrun i get the following error :
[rosrun] Couldn't find executable named demo_topic_publisher below /home/xavier/catkin_ws/src/mastering_ros_demo_pkg
I did source the `setup.bash` after catkin_make but still the issue was not sovled.
Please help me out here.
↧
↧
rosrun & node_name
With the advice from Lorenz I was able to resolve the errors I had when running rosmake. However I tried to launch rosrun but found that I am not using the correct node_name. Actually, I (incorrectly) assumed that after rosmake run completed one of the outputs would the creation of the node_name. Can anyone tell me how is the node_name created and where do I look for it?
Thanks,
Gene
↧
Start a node from python code - rospy equivalence rosrun - rosgui qt
Hallo,
I'm writing a plugin for my rosgui in python. At the moment I'm trying to write an "pressed-button" action which starts a rosnode. I's there a python-command equivalent to "`rosrun pkg node`" or the launch-command "?
Unfortunately I couldn't find something in the documentations yet.
Thanks for Help.
↧
How to run sudo rosrun
How can I launch rosrun and roslaunch commands with sudo? Why It is not possible by default? Please help.
↧
Running a node with rosrun requires extra input?
I'm trying to make OpenCV work with ROS and I finally found something that compiles, therefore I just downloaded and `catkin_make` [this.](https://github.com/Chinmoy07/Using-OpenCV-with-ROS) It did build, however, when I run `rosrun buoy buoycv`, I'm asked to choose one of the next ones additionally: `build/`, `devel/`, `install/` or `src/` and I do not understand why, nor I could find an explanation or have encountered this before.
Could somebody kindly provide me with information about this? As of now, I cannot launch the node because of this.
Thank you in advance
↧
↧
No output after starting my_publisher from the image_transport_tutorial pkg.
I'm following a tutorial `image_transportTutorialsExaminingImagePublisherSubscriber` and after command
rosrun image_transport_tutorial my_publisher path/to/some/image.jpg
nothing happens, no error or anything (of course I put correct path to my image)
↧
rosrun gazebo spawn_model -file 'pwd'/object.urdf -urdf -z 1 -model my_object
I launched gazebo successfully with this command:
"roslaunch gazebo_ros empty_world.launch"
In a second terminal window I launch this"
""rosrun gazebo spawn_model -file 'pwd'/object.urdf -urdf -z 1 -model my_object"
If I run the above in my catkin_ws/src directory (which has object.urdf in it) I'll get this error:
"[rospack] Error: package 'gazebo' not found"
Bear in mind that gazebo simulator is running behind my terminal windows, all ok.
I just want to put a sample object.urdf (a simple box) in the simulation.
This instruction is from "Creating and Spawning Custom URDF Objects in Simulation"
I am running kinetic on ubuntu 16.04 quad processor box.
Issuing the command "echo $ROS_PACKAGE_PATH" gives this:
/home/ju78iklo9/catkin_ws/src:/opt/ros/kinetic/share
Any help is greatly appreciated.
↧
Rosnode runs with root access but not as a normal user
Hi, I am using ROS Kinetic with a Nvidia TX2 board. I have a rosnode performing detection using faster rcnn framework on a camera feed. When I run it as a normal user using the command:
rosrun os_node os_cv_core 0 0 0 0 0 0 0 1 10 0
it throws the following error:
frcnn() running ...
F0509 07:02:15.048138 3700 syncedmem.hpp:22] Check failed: error == cudaSuccess (30 vs. 0) unknown error
*** Check failure stack trace: ***
@ 0x7fa8789718 google::LogMessage::Fail()
@ 0x7fa878b614 google::LogMessage::SendToLog()
@ 0x7fa8789290 google::LogMessage::Flush()
@ 0x7fa878beb4 google::LogMessageFatal::~LogMessageFatal()
@ 0x7fb1aff5fc caffe::SyncedMemory::mutable_cpu_data()
@ 0x7fb19886a4 caffe::Blob<>::Reshape()
@ 0x7fb1988ce4 caffe::Blob<>::Reshape()
@ 0x7fb1a6eaf4 caffe::InputLayer<>::LayerSetUp()
@ 0x7fb1b65d28 caffe::Net<>::Init()
@ 0x7fb1b67f24 caffe::Net<>::Net()
@ 0x7fb1b6b6dc FRCNN_API::Detector::Set_Model()
@ 0x4b7614 FRCNN_API::Detector::Detector()
@ 0x4b4318 main
@ 0x7fb0dd28a0 __libc_start_main
Aborted (core dumped)
However, the node runs fine if I run it after entering root mode. How do I run this command as a regular user (using `sudo` does not work, I get the error saying `sudo: rosrun: command not found`)?
Thanks.
↧
rospack segmentation fault
Hi guys,
I am using ros::package::getPath to resolve the path to a config file I am loading within my program.
When I am starting the node using
rosrun node_pkg node
everything works just fine, but when I directly launch the generated executable in the devel directory, I immediately get a segmentation fault
#0 0x00007ffff33056ad in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1 0x00007ffff18511f3 in rospack::Stackage::~Stackage() () from /opt/ros/jade/lib/librospack.so
#2 0x00007ffff1847ecf in rospack::Rosstackage::addStackage(std::string const&) ()
from /opt/ros/jade/lib/librospack.so
#3 0x00007ffff184bfad in rospack::Rosstackage::crawlDetail(std::string const&, bool, int, bool, std::vector>&, boost::unordered::unordered_set, std::equal_to, std::allocator>&) ()
from /opt/ros/jade/lib/librospack.so
#4 0x00007ffff184bef3 in rospack::Rosstackage::crawlDetail(std::string const&, bool, int, bool, std::vector>&, boost::unordered::unordered_set, std::equal_to, std::allocator>&) ()
from /opt/ros/jade/lib/librospack.so
#5 0x00007ffff184cbe5 in rospack::Rosstackage::crawl(std::vector>, bool) () from /opt/ros/jade/lib/librospack.so
#6 0x00007ffff185b2d1 in rospack::rospack_run(int, char**, rospack::Rosstackage&, std::string&) ()
from /opt/ros/jade/lib/librospack.so
#7 0x00007ffff1857e3c in rospack::ROSPack::run(int, char**) () from /opt/ros/jade/lib/librospack.so
#8 0x00007ffff1858169 in rospack::ROSPack::run(std::string const&) () from /opt/ros/jade/lib/librospack.so
#9 0x00007ffff597bf01 in ros::package::command(std::string const&) () from /opt/ros/jade/lib/libroslib.so
#10 0x00007ffff597c0cd in ros::package::getPath(std::string const&) () from /opt/ros/jade/lib/libroslib.so
can anybody explain this behavior?
#include
std::string path = ros::package::getPath("x_common");
Thank you for your time!
↧
↧
I am facing problem in catkin_make when trying to compile a package with camera plugin in it I may have made any mistake in CMakeLists please help
[ 98%] Built target uuv_gazebo_ros_cpc_plugin
[100%] Built target uuv_gazebo_ros_imu_plugin
/usr/bin/ld: cannot find -lDepthCameraPlugin
/usr/bin/ld: cannot find -lGpuRayPlugin
/usr/bin/ld: cannot find -lContactPlugin
/usr/bin/ld: cannot find -lCameraPlugin
/usr/bin/ld: cannot find -lRayPlugin
collect2: error: ld returned 1 exit status
gazebo_car_camera_sensor_plugin/CMakeFiles/gazebo_car_camera_sensor_plugin.dir/build.make:278: recipe for target '/home/nehra/catkin_ws/devel/lib/libgazebo_car_camera_sensor_plugin.so' failed
make[2]: *** [/home/nehra/catkin_ws/devel/lib/libgazebo_car_camera_sensor_plugin.so] Error 1
CMakeFiles/Makefile2:17350: recipe for target 'gazebo_car_camera_sensor_plugin/CMakeFiles/gazebo_car_camera_sensor_plugin.dir/all' failed
make[1]: *** [gazebo_car_camera_sensor_plugin/CMakeFiles/gazebo_car_camera_sensor_plugin.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j4 -l4" failed>>> ~/catkin_ws ^C>>> ~/catkin_ws
cmake_minimum_required(VERSION 2.8.3)
project(gazebo_car_camera_sensor_plugin)
find_package(catkin REQUIRED COMPONENTS
gazebo_plugins
gazebo_ros
roscpp
)
find_package (gazebo REQUIRED)
catkin_package(
INCLUDE_DIRS include
LIBRARIES gazebo_car_camera_sensor_plugin
CATKIN_DEPENDS gazebo_plugins gazebo_ros roscpp
DEPENDS system_lib
)
set(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
include_directories(include)
include_directories(
${catkin_INCLUDE_DIRS}
${Boost_INCLUDE_DIR}
${GAZEBO_INCLUDE_DIRS}
)
include_directories(${ADDITIONAL_INCLUDE_DIRS} ${OGRE_INCLUDE_DIRS}/Paging)
add_library(${PROJECT_NAME}
src/gazebo_ros_camera.cpp
)
link_directories(
${GAZEBO_LIBRARY_DIRS}
)
target_link_libraries(
${PROJECT_NAME}
${catkin_LIBRARIES}
${GAZEBO_LIBRARIES}
)
↧
Extracting depth images using rosrun command using realsense camera
I entered this command to extract depth images from intel realsense R200 camera:
rosrun image_view extract_images _sec_per_frame:=0.01 image:=/camera/depth/image_raw
I wasn't able to get the images, instead showed this error:
[ERROR] [1529053683.952956798]: Unable to convert 16UC1 image to bgr8
[ WARN] [1529053683.953020485]: Couldn't save image, no data!
When i entered this command for color images, it worked:
rosrun image_view extract_images _sec_per_frame:=0.01 image:=/camera/color/image_raw
How can this issue be resolved?
↧
Change behavior of killing nodes with same name
Any node which is already running with some name `my_node_name` will be killed if I run any node with the same name via `rosrun` and `roslaunch`.
Example:
# First terminal
rosrun rviz rviz __name:=rviz
# Second terminal
rosrun rviz rviz __name:=rviz
# First terminal again
[ WARN] [1529837879.313228883]: Shutdown request received.
[ WARN] [1529837879.313324710]: Reason given for shutdown: [new node registered with same name]
The only exceptions are nodes which are defined in the `roscore.xml` as explained [here](http://wiki.ros.org/roscore).
My question is, can I change the behavior of `rosrun/launch` such that old nodes keep running and new nodes will be killed?
↧
Kill rosrun gracefully
Hi All,
I am running a rosrun command to generate and publish messages continuously from a node X. But I am not able to gracefully kill the session. I am currently closing the terminal in order to stop the task.
Kindly let me know if the below 2 approaches are correct and how to implement it.
1. Open a new terminal and kill the node X
2. Ctrl+C to stop the the publishing of messages and return to the terminal (This is what I am actually looking for)
Thank you.
↧
↧
Could not find Qt binding (looked for: 'pyqt', 'pyside') when rosrun
I install ros kinetic on Ubuntu 16.04, with python 2.7. `rqt_graph` shows properly, however, when I run `rosrun rqt_gui rqt_gui` and `rosrun rqt_reconfigure rqt_reconfigure`. It shows the following message, my $PYTHONPATH is `/usr/lib/python2.7/dist-packages:/opt/ros/kinetic/lib/python2.7/dist-packages`.
`ros-kinetic-python-qt-binding` is already installed.
Traceback (most recent call last):File "/opt/ros/kinetic/lib/rqt_gui/rqt_gui", line 13, in
sys.exit(main.main())
File "/opt/ros/kinetic/lib/python2.7/dist-packages/rqt_gui/main.py", line 59, in main
return super(Main, self).main(argv, standalone=standalone, plugin_argument_provider=plugin_argument_provider, plugin_manager_settings_prefix=str(hash(os.environ['ROS_PACKAGE_PATH'])))
File "/opt/ros/kinetic/lib/python2.7/dist-packages/qt_gui/main.py", line 336, in main
from python_qt_binding import QT_BINDING
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/__init__.py", line 55, in
from .binding_helper import loadUi, QT_BINDING, QT_BINDING_MODULES, QT_BINDING_VERSION # @UnusedImport
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 252, in
getattr(sys, 'SELECT_QT_BINDING_ORDER', None),
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 98, in _select_qt_binding
raise ImportError("Could not find Qt binding (looked for: %s):\n%s" % (', '.join(["'%s'" % b for b in binding_order]), '\n'.join(error_msgs)))
ImportError: Could not find Qt binding (looked for: 'pyqt', 'pyside'):
ImportError for 'pyqt': No module named QtCore
Traceback (most recent call last):
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 89, in _select_qt_binding
QT_BINDING_VERSION = binding_loader(required_modules, optional_modules)
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 131, in _load_pyqt
_named_import('PyQt5.%s' % module_name)
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 111, in _named_import
module = builtins.__import__(name)
ImportError: No module named QtCore
ImportError for 'pyside': No module named QtCore
Traceback (most recent call last):
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 89, in _select_qt_binding
QT_BINDING_VERSION = binding_loader(required_modules, optional_modules)
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 163, in _load_pyside
_named_import('PySide2.%s' % module_name)
File "/opt/ros/kinetic/lib/python2.7/dist-packages/python_qt_binding/binding_helper.py", line 111, in _named_import
module = builtins.__import__(name)
ImportError: No module named QtCore
↧
Serial Connection to Hokuyo from Master
Hi,
I am currently getting the error:
[ERROR] [1531729856.715593296]: Error connecting to Hokuyo: Could not open serial Hokuyo:
/dev/ttyACM0 @ 115200
could not open serial device.
Initially, after encountering this problem, I was able to resolve it by adding myself to the dialout list as suggested:
https://answers.ros.org/question/286646/error-connecting-to-hokuyo-could-not-open-serial-hokuyo/
I was able to view the data from the Hokuyo after doing this.
I am now trying to access the Hokuyo from a different machine. On the drone (where the Hokuyo is connected), I changed ROS_MASTER_URI and ROS_IP to match the PC. On the PC, I then ran:
*$ roscore* , $ ssh drone-user@drone-IP
I am able to run '$ rostopic list' correctly.
However, after typing '$ rosrun urg_node urg_node', I receive the error mentioned above.
Any help is greatly appreciated.
Thanks,
Justin
↧
rosrun autocomplete show all src files.
when i try autocomplete at rosrun with tab key,
uesr@pc:~$ rosrun name-of-pkg [tab]
CMakeLists.txt [executable_name]
main.cpp package.xml
what i expect is to see only the executable_name on autocomplete, but what i see is whole files in package folder in src
another happening :
i created 2 catkin workspace with a pkg
1. create ws1/src/ws1_pkg, do $ catkin_make
2. then create ws2/src/ws2_pkg, do $ catkin_make
3. $ source ws1/devel/setup.bash -> can't autocomplete ws2_pkg
4. new terminal $ source ws2/devel/setup.bash -> rosrun ws1_pkg shows up.
ws1_pkg shows up even if i sourced ws2 setup.bash
What's happening to me?
ubuntu 16.04, kinetic, reinstalled today
↧