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2022-08-23 08:45:56 -0500 received badge  Nice Answer (source)
2020-08-21 03:22:27 -0500 answered a question [ROS2]missing <buildtool_depend>ament_python</buildtool_depend> in package.xml

No. According to https://github.com/ros2/ros2_documentation/issues/508 you are fine. (Actually rosdep install ... fails

2020-07-21 10:26:06 -0500 edited answer Cannot solve error in XML document

My best guess (and verified on my machine): You forgot the Shebang (https://en.wikipedia.org/wiki/Shebang_(Unix)) to set

2020-07-21 10:11:20 -0500 answered a question Cannot solve error in XML document

My best guess (and verified on my machine): You forgot the Shebang (https://en.wikipedia.org/wiki/Shebang_(Unix)) to set

2020-07-21 10:11:20 -0500 received badge  Rapid Responder (source)
2020-07-18 11:29:55 -0500 received badge  Nice Answer (source)
2020-07-17 04:47:58 -0500 answered a question Problems finding messages when compiling ROS project

Hi, since your information provided is quite sparse I'm not certain in the answer. However I'm assuming your messages a

2020-07-17 04:47:58 -0500 received badge  Rapid Responder (source)
2020-05-14 05:22:08 -0500 marked best answer colcon builds "in-source"

Opposed to the documentation provided here colcon build creates the output directories "log", "install" and "build" in place.

Considering I have packages in src the commands roscd <my_fancy_ros_package>; colcon build would create a workspace structure:

workspace
  - src
      - <my_fancy_ros_package>
          - build
          - log
          - install 
          - (other directories contained in <my_fancy_ros_packag> like "msg", "include" …

to have the output directories as peers of "src" I have to change directory up to "workspace" (roscd <my_fancy_ros_package>; cd ../..; colcon build

Are there any (undocumented) options I somehow set to disable out-out-source builds? I have the following colcon packages installed (from bouncy setup instructions as far as I remember)

python3-colcon-argcomplete/bionic,bionic,bionic,bionic,now 0.3.0-1 all [installed,automatic]
python3-colcon-bash/bionic,bionic,bionic,bionic,now 0.3.1-1 all [installed,automatic]
python3-colcon-bazel/bionic,bionic,bionic,bionic 0.1.0-1 all
python3-colcon-cmake/bionic,bionic,bionic,bionic,now 0.2.5-1 all [installed,automatic]
python3-colcon-common-extensions/bionic,bionic,bionic,bionic,now 0.2.0-2 all [installed]
python3-colcon-core/bionic,bionic,bionic,bionic,now 0.3.14-1 all [installed,automatic]
python3-colcon-defaults/bionic,bionic,bionic,bionic,now 0.2.1-1 all [installed,automatic]
python3-colcon-devtools/bionic,bionic,bionic,bionic,now 0.2.1-1 all [installed,automatic]
python3-colcon-library-path/bionic,bionic,bionic,bionic,now 0.2.0-1 all [installed,automatic]
python3-colcon-metadata/bionic,bionic,bionic,bionic,now 0.2.1-1 all [installed,automatic]
python3-colcon-mixin/bionic,bionic,bionic,bionic 0.1.1-1 all
python3-colcon-notification/bionic,bionic,bionic,bionic,now 0.2.5-1 all [installed,automatic]
python3-colcon-output/bionic,bionic,bionic,bionic,now 0.2.3-1 all [installed,automatic]
python3-colcon-package-information/bionic,bionic,bionic,bionic,now 0.2.1-1 all [installed,automatic]
python3-colcon-package-selection/bionic,bionic,bionic,bionic,now 0.2.1-1 all [installed,automatic]
python3-colcon-parallel-executor/bionic,bionic,bionic,bionic,now 0.2.2-1 all [installed,automatic]
python3-colcon-pkg-config/bionic,bionic,bionic,bionic,now 0.1.0-1 all [installed,automatic]
python3-colcon-powershell/bionic,bionic,bionic,bionic,now 0.3.3-1 all [installed,automatic]
python3-colcon-python-setup-py/bionic,bionic,bionic,bionic,now 0.2.1-1 all [installed,automatic]
python3-colcon-recursive-crawl/bionic,bionic,bionic,bionic,now 0.2.0-1 all [installed,automatic]
python3-colcon-ros/bionic,bionic,bionic,bionic,now 0.3.6-1 all [installed,automatic]
python3-colcon-test-result/bionic,bionic,bionic,bionic,now 0.3.0-1 all [installed,automatic]
python3-colcon-zsh/bionic,bionic,bionic,bionic,now 0.3.1-1 all [installed,automatic]

this happens with ros2 (bouncy) and ros1 (melodic) workspaces, regardless of which ROS_DISTRO is set

2020-05-14 05:22:08 -0500 received badge  Scholar (source)
2020-05-13 15:26:27 -0500 answered a question Action Header Returns "no such file or directory" When I Include It In cpp.

Hi, you are missing a set of ${} in your CMakeList. Try changingadd_dependencies(act_client ${PROJECT_NAME}_EXPORTED_TA

2020-05-12 08:28:09 -0500 received badge  Rapid Responder (source)
2020-05-12 08:28:09 -0500 answered a question Subscriber callback not triggering while in a while loop

Without checking or too much experience in ros2: your rclcpp::spin(node) is only after the while loop. So your node is

2020-05-12 05:22:45 -0500 received badge  Teacher (source)
2020-05-12 05:11:45 -0500 answered a question Importing a service in python defined by others

Hi, I'm not sure about your definition of the service file. A quick google search lead me to https://github.com/Robotnik

2020-05-12 05:11:45 -0500 received badge  Rapid Responder (source)
2019-03-29 06:53:22 -0500 received badge  Famous Question (source)
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2019-01-14 06:47:02 -0500 asked a question colcon builds "in-source"

colcon builds "in-source" Opposed to the documentation provided here colcon build creates the output directories "log",

2018-06-29 08:58:40 -0500 received badge  Enthusiast
2018-06-21 10:27:23 -0500 commented question launch file opening error

are you sure the bagfile "/opt/ros/kinetic/share/image_view/a.bag" exists? since it is not part of the released package

2018-06-21 04:45:36 -0500 received badge  Supporter (source)
2018-06-21 04:31:36 -0500 answered a question stop my robot if /cmd_vel doesn't receive a message within a certain time period

A quite general version of this problem I came up with is attached: #! /usr/bin/env python import rospy from geometry_