Hi,

I know that OMPL performance can be improved by tuning parameters in planning.yaml file, but which are those parametros? and how can be setting?

Regards.

Hi eveyone,

I'm doing DisplayingRobotTrajectoriesInRviz tutorial and in the last step, when I'm configuring the Planning display type (whit topic name: joint_path_display and robot_description field: robot_description) the aplication crash: Segmentation fail.

I'm use ros Fuerte on Ubuntu 12.04

Any body know what can I do??

Redards.

Hi everyone,

I'm looking for a solution for this problem in Internet, but I'don't found anything. I'm working with OMPL planning, and when I find a plan, I'd like to execute in the PR2 Controller.

Anybody know how I can do it?? From: arm_navigation_msgs/RobotTrajectory trajectory to: pr2_controllers_msgs::JointTrajectoryGoal

Redards.

Hi,

I'm using Matlab/ROS interface (with Matlab R2013a and ROS fuerte)

I've done the Matlab example where a node publish and subscriber from Matalb and this example works without problem. But now I have gazebo running and I want to subscrib from Matlab and It doesn't work.. Could anyone tell me what is wrong?

I do: roscore

roslaunch gazebo_world ....

and execute this code from Matlab:

global rosMasterIp; rosMasterIp = '127.0.1.1';

global localhostIp; localhostIp = '127.0.0.1';

% Create a new node named /NODE and connect it to the master.

node = rosmatlab.node('NODE', rosMasterIp, 11311, 'rosIP', localhostIp);

% Add a publisher of a topic named /TOPIC to the node to send message of type std_msgs/String.

publisher = rosmatlab.publisher('TOPIC','std_msgs/String',node);

% Add a subscriber to a topic named /TOPIC to the node to receive message

subscriber = rosmatlab.subscriber('TOPIC','std_msgs/String',1,node)

%Gazebo topic

subscriber2 = rosmatlab.subscriber('gazebo/model_states', 'gazebo_msgs/ModelStates',1,node);

subscriber.setOnNewMessageListeners({@function1}); subscriber2.setOnNewMessageListeners({@function2});

% Create a new message of type std_msgs/String.

msg = rosmatlab.message('std_msgs/String',node);

% Set the data field of the message and then publish the message

msg.setData(sprintf('Message created: %s',datestr(now)));

publisher.publish(msg); pause(1);

Hi everyone,

I'm working whit ompl motion plan service, in: http://www.ros.org/wiki/ompl_ros_interface/Tutorials/Specifying%20pose%20goals

when I do:

 ros::ServiceClient service_client = nh.serviceClient<motion_planning_msgs::GetMotionPlan>("/ompl_planning/plan_kinematic_path");
  service_client.call(request,response);
  if(response.error_code.val != response.error_code.SUCCESS)
  {
    ROS_ERROR("Motion planning failed");
  }

Always obtain: response.error_code.val != response.error_code.SUCCESS === FALSE

And if you see the planning log, you can see:

[ERROR] [1352218229.018731999, 4531.226000000]: client wants service /ompl_planning/plan_kinematic_path to have md5sum dc1bde6dccfb9e1ff4f7ed84e081f964, but it has e7f04013c167d0703692fec8a86b22ef. Dropping connection.

What this means? what is the problem??

Regards

Hi everyone,

My question is very simple: What I'm doing wrong????

I did a easy subscriptor:

#include "ros/ros.h"
#include "gazebo_msgs/ModelState.h"

void chatterCallback(const gazebo_msgs::ModelState::ConstPtr& msg)
{
    int i = 0;

    ROS_INFO("I heard: %d", i);
}

int main(int argc, char **argv)
{
  ros::init(argc, argv, "listener");

  ros::NodeHandle n;

  ros::Subscriber sub = n.subscribe("gazebo/model_states",1000, chatterCallback);
    ROS_INFO("IN ");
    ros::Duration(1,0).sleep();
    ROS_INFO("OUT ");

    ros::spin();

  return 0;
}

And the resoult is:

./bin/listener

[ INFO] [1352123368.021140417]: IN 
[ INFO] [1352123369.264976085, 18.667000000]: OUT 
(.. nothing ..)

While I do: (I obtain a lot of topic)

rostopic echo /gazebo/model_states

Regars.

What has been changed??

I was using my roslisp and cram langguage perfectly, and when I decide to update the ros-electric- (..) package, because ubuntu said me there are somes update, the cram language breaks!!

when you do:

; SLIME 2011-10-0 CL-USER> (ros-load:load-system "cram_language" :cram-language)

hapend: Lock on package SB-THREAD violated when defining BARRIER as a structure while in package TCR.SYNCHRONIZATION-TOOLS. [Condition of type SYMBOL-PACKAGE-LOCKED-ERROR] See also: SBCL Manual, Package Locks [:node]

Restarts: 0: [CONTINUE] Ignore the package lock. 1: [IGNORE-ALL] Ignore all package locks in the context of this operation. 2: [UNLOCK-PACKAGE] Unlock the package. 3: [TRY-RECOMPILING] Recompile synchronization-tools and try loading it again 4: [RETRY] Retry loading FASL for #<synchronized-tools-source-file "synchronization-tools"="" "synchronization-tools"="">. 5: [ACCEPT] Continue, treating loading FASL for #<synchronized-tools-source-file "synchronization-tools"="" "synchronization-tools"=""> as having been successful. --more--

and when you do anything, hapend:

WARNING: System `cram-language' is compiled by a different process. Waiting for compilation of blocking file to finish.

and remains so for ever!!!

What is de solution??

thanks

I'm doing the cram_tutorial (EventsCoTeSys-ROS-School Day 4)

And when I do CL-USER> (ros-load:load-system "cram_tutorials" :cram-pick-and-place)

I have this problem:

component #:APPROACH_TABLE_TOOLS-SRV not found, required by

<system "cram-pick-and-place"="" {b7a72d1}&gt;<="" h1="">

[Condition of type ASDF:MISSING-DEPENDENCY]

What can I do?

Thanks.

Hi,

Anybody could explain me what is exactly md5sum, and could tell me typical problems/solutions about this?

Regards