Execute Code Based on ROS Time
Using a rosrate object
allows you to control the rate of your code execution based on the ROS Time
/clock topic or system time on your computer. By executing code at
constant intervals, you can accurately time and schedule tasks. These examples show
different applications for the rosrate object including its uses with ROS
image messages and sending commands for robot control.
For other applications based on system time, consider the rateControl (Navigation Toolbox)
object.
Send Fixed-rate Control Commands To A Robot
This example shows to send regular commands to a robot at a fixed rate. It uses the Rate object to execute a loop that publishes std_msgs/Twist messages to the network at a regular interval.
Setup ROS network. Specify the IP address if your ROS network already exists.
rosinit
Launching ROS Core... Status before launching ros core :0 result before launching ros core: 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49372 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49374 pts/0 S+ 0:00 grep -E ros|python Done in 0.69343 seconds. * Inside getProcessPID function * Process Name: /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 Status before getting PID :0 Result before getting PID : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49397 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49399 pts/0 S+ 0:00 grep -E ros|python Result: 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 Status: 0 PID obtained: 49377 Status after getting PID :0 Result after getting PID : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49404 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49406 pts/0 S+ 0:00 grep -E ros|python * Exiting getProcessPID function * Status after launching ros core :0 result after launching ros core: 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49407 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49409 pts/0 S+ 0:00 grep -E ros|python Status before deleting node :0 Result before deleting node : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49410 ? Sl 0:00 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/bin/glnxa64/libmwros1server -mvmInputPipe 603 -1 -mvmOutputPipe -1 617 49425 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49427 pts/0 S+ 0:00 grep -E ros|python Status after deleting node :0 Result after deleting node : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49431 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49433 pts/0 S+ 0:00 grep -E ros|python Initializing ROS master on http://172.20.149.69:59607. Initializing global node /matlab_global_node_07296 with NodeURI http://dcc286938glnxa64:40641/ and MasterURI http://localhost:59607.
Setup publisher and message to send Twist commands.
[pub,msg] = rospublisher('/cmd_vel','geometry_msgs/Twist'); msg.Linear.X = 0.5; msg.Angular.Z = -0.5;
Create Rate object with specified loop parameters.
desiredRate = 10;
rate = robotics.Rate(desiredRate);
rate.OverrunAction = 'drop'rate =
rateControl with properties:
DesiredRate: 10
DesiredPeriod: 0.1000
OverrunAction: 'drop'
TotalElapsedTime: 0.0694
LastPeriod: NaN
Run loop and hold each iteration using waitfor(rate). Send the Twist message inside the loop. Reset the Rate object before the loop to reset timing.
reset(rate) while rate.TotalElapsedTime < 10 send(pub,msg) waitfor(rate); end
View statistics of fixed-rate execution. Look at AveragePeriod to verify the desired rate was maintained.
statistics(rate)
ans = struct with fields:
Periods: [0.1028 0.0973 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1002 0.0998 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 … ] (1×100 double)
NumPeriods: 100
AveragePeriod: 0.1000
StandardDeviation: 3.9879e-04
NumOverruns: 0
Shut down ROS network.
rosshutdown
Shutting down global node /matlab_global_node_07296 with NodeURI http://dcc286938glnxa64:40641/ and MasterURI http://localhost:59607. Status before deleting node :0 Result before deleting node : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49436 ? Sl 0:00 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/bin/glnxa64/libmwros1server -mvmInputPipe 606 -1 -mvmOutputPipe -1 618 49469 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49471 pts/0 S+ 0:00 grep -E ros|python Status after deleting node :0 Result after deleting node : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49478 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49480 pts/0 S+ 0:00 grep -E ros|python Shutting down ROS master on http://172.20.149.69:59607. Status before deleting core :0 Result before deleting core : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49377 pts/0 S 0:00 bash /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/toolbox/ros/mlroscpp/util/+ros/+internal/runroscmd.sh /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1 /tmp/Bdoc25a_2864802_2753801/tp9ec98cb4_4da7_4c9e_8615_93eef5bb7a0f/ros1/glnxa64/venv /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/bin/glnxa64 rosmaster --core -p 59607 -w 3 49389 pts/0 Sl 0:00 python3 /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab/sys/ros1/glnxa64/ros1/bin/rosmaster --core -p 59607 -w 3 49481 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49483 pts/0 S+ 0:00 grep -E ros|python * Inside killProcessByPID function * PID of core to be killed: 49377 Status after Child Process Killed: 0 Result after Child Process Killed: Status after deleting core :0 Result after deleting core : 888 ? Ssl 0:44 /usr/bin/python3 /usr/bin/mta-sts-daemon --config /etc/mta-sts-daemon.yml 1180 ? Ssl 0:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown --wait-for-signal 47795 ? Ss 0:00 /bin/sh /usr/bin/xvfb-run -a -s -screen 0 1280x1024x24 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47825 ? S 0:00 /bin/sh -c export TMPDIR=/tmp/Bdoc25a_2864802_2753801 COMPONENT=examples/ros ; cd /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/matlab/examples/ros ; //mathworks/hub/bat/common/bin/mw sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47827 ? S 0:00 sh ../../tools/build_using_mlpath/mlenv --use-scoped-paths 1 --scoped-cppms-file /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168/scoped_cppms_modules.txt --scoped-cppms-envvar MW_SCOPED_CPPMICROSERVICES_MODULES --tag bml --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --paths /mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MATLAB_LOG_DIR=/mathworks/devel/bat/Bdoc25a/logs/2864802/build.glnxa64.2864802.r001/examples/ros/build.glnxa64.2864802.r001.bml.8a0672ac9b49152569df99eed4417168 MAKEFLAGS= DISPLAY=:0 MESA_BACK_BUFFER=Pixmap perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 47862 ? S 0:00 perl ../../tools/build_using_matlab/mlrun --verbose --runnable /mathworks/devel/bat/filer/batfs2566-0/Bdoc25a.2864802/build/runnable/matlab --display mwtools.liveCodeToDocbook ../../derived/glnxa64/examples/ros/mlx_to_docbook7.txt ../../derived/glnxa64/examples/ros examples/ros ../../help/examples/ros/glnxa64 //mathworks/hub/3rdparty/R2021a/6299939/glnxa64/pngquant 1 49488 pts/0 S+ 0:00 /bin/bash -c ps ax | grep -E 'ros|python' 49490 pts/0 S+ 0:00 grep -E ros|python * Exiting killProcessByPID function *
Fixed-rate Publishing of ROS Image Data
This example shows how to regularly publish and receive image messages using ROS and the rosrate function. The rosrate function creates a Rate object to regularly access the /camera/rgb/image_raw topic on the ROS network using a subscriber. The rgb image is converted to a grayscale using rgb2gray and republished at a regular interval. Parameters such as the IP address and topic names vary with your robot and setup.
Connect to ROS network. Setup subscriber, publisher, and data message.
ipaddress = '192.168.203.129'; % Replace with your network address rosinit(ipaddress)
Initializing global node /matlab_global_node_10650 with NodeURI http://192.168.203.1:50899/
sub = rossubscriber('/camera/rgb/image_raw'); pub = rospublisher('/camera/gray/image_gray','sensor_msgs/Image'); msgGray = rosmessage('sensor_msgs/Image'); msgGray.Encoding = 'mono8';
Receive the first image message. Extract image and convert to a grayscale image. Display grayscale image and publish the message.
msgImg = receive(sub); img = readImage(msgImg); grayImg = rgb2gray(img); imshow(grayImg)
writeImage(msgGray,grayImg) send(pub,msgGray)
Create ROS Rate object to execute at 10 Hz. Set a loop time and the OverrunAction for handling
desiredRate = 10;
loopTime = 5;
overrunAction = 'slip';
rate = rosrate(desiredRate);
r.OverrunAction = overrunAction;Begin loop to receive, process and send messages every 0.1 seconds (10 Hz). Reset the Rate object before beginning.
reset(rate) for i = 1:desiredRate*loopTime msgImg = receive(sub); img = readImage(msgImg); grayImg = rgb2gray(img); writeImage(msgGray,grayImg) send(pub,msgGray) waitfor(rate); end
View the statistics for the code execution. AveragePeriod and StandardDeviation show how well the code maintained the desiredRate. OverRuns occur when data processing takes longer than the desired period length.
statistics(rate)
ans = struct with fields:
Periods: [1×50 double]
NumPeriods: 50
AveragePeriod: 0.1000
StandardDeviation: 0.0083
NumOverruns: 0
Shut down ROS node
rosshutdown
Shutting down global node /matlab_global_node_10650 with NodeURI http://192.168.203.1:50899/
See Also
rateControl (Navigation Toolbox) | rosrate | waitfor
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