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ModbusTcpClient Connection is closed unexpectedly In this example script, the modbus connection works properly when I ca

Exactly, the problem is buildfarm is trying to solve the pip dependency as Debian package. Actually it is the same probl

Exactly, the problem is buildfarm is trying to solve the pip dependency as Debian package. Actually it is the same probl

ezdxf Python module is only available as pip dependency in Ubuntu focal: https://packages.ubuntu.com/search?suite=defau

Exactly, the problem is buildfarm is trying to solve the pip dependency as Debian package. Actually it is the same probl

rosdep install Jenkins error I am trying to build z_laser_projector package successfully. But Jenkins raises the follow

I'm trying to fix Jenkins devel job of the package z_laser_projector

I'm having some import errors when running tests ("1.3. run tests" Console Section)

ModuleNotFoundError: No module named 'rospkg'

The whole package is developed for python3 in ROS melodic but Jenkins is using python2. I would like to ask if there is any way to force Jenkins configuration in order to run catkin with python3, for example forcing env vars as ROS_PYTHON_VERSION. Or am I missing something on package.xml?

Check that the build succeeds by running tests on TravisCI

Thank you very much for your answer, it has been very helpful!

Buildfarm Jenkins devel job unstable I'm trying to fix Jenkins devel job of the package z_laser_projector I'm having so

Thank you very much for your help! I asked for adding python3-thriftpy depend at rosdep. See here: https://github.com/ro

I have this error in the Jenkins doc job of my package: http://build.ros.org/view/Mdoc/job/Md...

04:09:39 /tmp/ws/src/z_laser_projector/doc/zlp_core.rst:4: WARNING: autodoc: failed to import module u'zlp_core'; the following exception was raised:
04:09:39 Traceback (most recent call last):
04:09:39   File "/usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.py", line 658, in import_object
04:09:39     __import__(self.modname)
04:09:39   File "/tmp/ws/src/z_laser_projector/src/z_laser_projector/zlp_core.py", line 29, in <module>
04:09:39     import thriftpy
04:09:39 ImportError: No module named thriftpy

I'm trying to solve it including dependencies in my package.xml:

  <build_depend>python3-thriftpy</build_depend>
  <build_export_depend>python3-thriftpy</build_export_depend>
  <exec_depend>python3-thriftpy</exec_depend>

However, when I try to build the package at Travis-CI (in private before try in Jenkins), it throws this error:

ERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies:
z_laser_projector: Cannot locate rosdep definition for [python3-thriftpy]
The command "rosdep install -y --from-paths src --ignore-src --rosdistro $ROS_DISTRO" failed and exited with 1 during .

How could I include this dependency in order to fix the Jenkins job? Am I taking the right way to solve the error?

Jenkins doc job error: rosdep thriftpy I have this error in the Jenkins doc job of my package: http://build.ros.org/view

I thought about applying translation/rotation matrix to each point of marker.points array but I don't know how I could p

Apply transform to visualization marker I create a visualization marker with circle shape in this way: from geometry_ms

I'm trying to plot different paths at rviz

I'm using the following code to get a first approach (based on this repository: https://github.com/HaoQChen/show_traj...)

import rospy
import math
import numpy as np
from geometry_msgs.msg import PoseStamped
from nav_msgs.msg import Path, Odometry
from std_msgs.msg import Empty

class ProjectElement(object):

    def __init__(self):
        self.path_pub = rospy.Publisher('~path', Path, latch=True, queue_size=10)
        self.circle_sub = rospy.Subscriber('~circle', Empty, self.circle_cb, queue_size=10)
        self.line_sub = rospy.Subscriber('~line', Empty, self.line_cb, queue_size=10)
        self.project_sub = rospy.Subscriber('~project', Empty, self.project_cb, queue_size=10)

        self.paths = []

        self.rate = rospy.Rate(50)

    def circle_cb(self, msg):

        path = Path()

        centre_x = 1
        centre_y = 1
        R = 0.5
        th = 0.0
        delta_th = 0.1

        while (th<2*math.pi):
            x = centre_x + R * math.sin(th)
            y = centre_y + R * math.cos(th)
            th += delta_th

            this_pose_stamped = PoseStamped()
            this_pose_stamped.pose.position.x = x
            this_pose_stamped.pose.position.y = y

            this_pose_stamped.header.stamp = rospy.get_rostime()
            this_pose_stamped.header.frame_id = "/my_cs"

            path.poses.append(this_pose_stamped)

        path.header.frame_id = "/my_cs"
        path.header.stamp = rospy.get_rostime()

        self.paths.append(path)

    def line_cb(self, msg):

        path = Path()

        x_start = 0.0
        y_start = 0.0
        length = 2
        angle = 45 * math.pi/180
        th = 0.0
        delta_th = 0.1

        while (th<length):
            x = x_start + th * math.cos(angle)
            y = y_start + th * math.sin(angle)
            th += delta_th

            this_pose_stamped = PoseStamped()
            this_pose_stamped.pose.position.x = x
            this_pose_stamped.pose.position.y = y

            this_pose_stamped.header.stamp = rospy.get_rostime()
            this_pose_stamped.header.frame_id = "/my_cs"

            path.poses.append(this_pose_stamped)

        path.header.frame_id = "/my_cs"
        path.header.stamp = rospy.get_rostime()

        self.paths.append(path)  

    def project_cb(self, msg):

        while(True):
            for element in self.paths:
                # element.header.stamp = rospy.get_rostime()
                self.path_pub.publish(element)
if __name__ == '__main__':

    rospy.init_node('path_simulate')

    elements = ProjectElement()

    rospy.spin()

I can visualize the paths at rviz, but I don't know how to plot both figures at the same time in this way.

line rviz image

circle rviz image

I would like to ask if this approach is the best way to address this issue or which could be the best way.

This question was solved here: https://stackoverflow.com/questions/63774548/plot-multiple-paths-in-rviz/63810708#6381070

Plot multiple paths in rviz I'm trying to plot different paths at rviz I'm using the following code to get a first appr

Plot multiple paths in rviz I'm trying to plot different paths at rviz I'm using the following code to get a first appr

Plot multiple paths in rviz I'm trying to plot different paths at rviz I'm using the following code to get a first appr

Plot multiple paths in rviz I'm trying to plot different paths at rviz I'm using the following code to get a first appr

Autogenerated CODE API with rosdoc_lite and sphinx I'm trying to doxygenate a python script with the rosdoc_lite tool to