galou's profile - activity

Is rclcpp::Clock(RCL_ROS_TIME).now() always the same as node_->get_clock()->now()?

Actually the complete question would be: How can catkin find ROS libraries in non-standard locations, or is it ok not to write a library for Python in catkin_package(...)?

I wrote a library in C++ for Python to wrap a C++ class. For it to be usable in Python I needed to change the default location. Extract of CMakeLists.txt in package crossing_detector:

set_target_properties(crossing_detector_wrapper_cpp PROPERTIES

PREFIX ""

LIBRARY_OUTPUT_DIRECTORY ${CATKIN_DEVEL_PREFIX}/${CATKIN_PACKAGE_PYTHON_DESTINATION})

This work well in the sense that I can use it in Python with

from crossing_detector.crossing_detector_wrapper_cpp import CrossingDetectorWrapper

The problem comes when I want to compile separately (catkin_make_isolated or catkin build) another package that depends on crossing_detector, catkin complains about a missing library:

Project 'dataset_analyzer' tried to find library 'crossing_detector_wrapper_cpp'. The library is neither a target nor built/installed properly The library is not even needed there.

The problem doesn't occur when compiling both packages together (catkin_make).

See also: https://github.com/catkin/catkin_tool...

I'm thinking of solving the problem by removing the library from catkin_package(...). Is this ok to do so?

Example of combining trajectories with MoveItCpp According to this question [With MoveItCpp] you can do things like

Well, it looks that the answer is NO. I had some issues with this and wasn't satisfied with the answer so I wrote a smal

Well, it looks that the answer is NO. I had some issues with this and wasn't satisfied with the answer so I wrote a smal

`rclcpp::Clock(RCL_ROS_TIME).now()` vs. `node_->get_clock()->now()` Is rclcpp::Clock(RCL_ROS_TIME).now() always th

Duplicate of https://answers.ros.org/question/376272/use-python-rather-than-python3-in-lots-of-files/.

I don't have an answer but a workaround: ln -s /usr/bin/python3 ~/.local/bin/python, so that python is python3 (of cours

What also doesn't work is cmd=['echo', '%%%%%', 'default_true_with_cmd: ', 'true' if evaluate_condition_expression(conte

What also doesn't work is cmd=['echo', '%%%%%', 'default_true_with_cmd: ', 'true' if evaluate_condition_expression(conte

I manage to solve my second example with: #!/usr/bin/env python3 # Try with `ros2 launch ./test2.launch.py no_default:=

I noticed that the issue is maybe somewhere else because I cannot pass the no_default argument to the following launch f

How do I use launch arguments in the 'arguments' keyword argument of Node in ROS2? I am able to use a boolean launch arg

How do I use launch arguments in the 'arguments' keyword argument of Node in ROS2? I am able to use a boolean launch arg

Are there any #define to know which version of ROS2 I'm using in C++ source?

I found a workaround which consists in symlinking the directory written in the egg-link file and to the associated egg-i

Similar thing here but different command and output: ros2 run rqt_gui rqt_gui Traceback (most recent call last): File

Similar thing here but different command and output: ros2 run rqt_gui rqt_gui Traceback (most recent call last): File

get ros2 version in C++ Are there any #define to know which version of ROS2 I'm using in C++ source?

Is there a way to set the log level for a node in a launch file?

I would find this practical.

Cheers, Gaël

I still had the error of undefined void tf2::doTransform(Pose &, Pose &, TransformStamped&). The file docume

I have the same problem with indigo. I included <tf2_geometry_msgs/tf2_geometry_msgs.h>, added tf2_geometry_msgs t