sai's profile - activity

My questions are at the end.

When i use the command to find the ROS PACKAGE PATH

sai@sai-desktop:~/fuerte_workspace$ echo $ROS_PACKAGE_PATH
/home/sai/fuerte_workspace/help:/home/sai/fuerte_workspace/turtlebot_driver:/home/sai/fuerte_workspace/turtlebot:/home/sai/fuerte_workspace/sandbox:/opt/ros/fuerte/stacks:/opt/ros/fuerte/share:/opt/ros/fuerte/share/ros

After this, ROSWTF results in

sai@sai-desktop:~/fuerte_workspace$ roswtf

Loaded plugin tf.tfwtf
No package or stack in context
================================================================================
Static checks summary:

Found 2 error(s).

ERROR Not all paths in ROS_PACKAGE_PATH [/home/sai/fuerte_workspace/help:/home/sai/fuerte_workspace/turtlebot_driver:/home/sai/fuerte_workspace/turtlebot:/home/sai/fuerte_workspace/sandbox:/opt/ros/fuerte/stacks:/opt/ros/fuerte/share:/opt/ros/fuerte/share/ros] point to an existing directory: 
 * /home/sai/fuerte_workspace/help

ERROR Not all paths in PYTHONPATH [/opt/ros/fuerte/share/ros/core/roslib/src:/opt/ros/fuerte/lib/python2.6/dist-packages:/opt/ros/fuerte/lib/python2.6/dist-packages:] point to a directory: 
 * /opt/ros/fuerte/share/ros/core/roslib/src

================================================================================

ROS Master does not appear to be running.
Online graph checks will not be run.
ROS_MASTER_URI is [http://localhost:11311]


------------------------------------------------------------------------

Then I changed the ROS_PACKAGE_PATH to

sai@sai-desktop:~/fuerte_workspace$ ROS_PACKAGE_PATH=/home/sai/fuerte_workspace/sandbox:/opt/ros/fuerte/stacks:/opt/ros/fuerte/share:

Then ROSWTF results in

sai@sai-desktop:~/fuerte_workspace$ roswtf
Loaded plugin tf.tfwtf
No package or stack in context
================================================================================
Static checks summary:

Found 1 error(s).

ERROR Not all paths in PYTHONPATH [/opt/ros/fuerte/share/ros/core/roslib/src:/opt/ros/fuerte/lib/python2.6/dist-packages:/opt/ros/fuerte/lib/python2.6/dist-packages:] point to a directory: 
 * /opt/ros/fuerte/share/ros/core/roslib/src

================================================================================

ROS Master does not appear to be running.
Online graph checks will not be run.
ROS_MASTER_URI is [http://localhost:11311]

My questions are

1. Initially why did the ROS_PACKAGE_PATH has such a big path?
2. Why are the errors turning up in ROSWTF?
3. The new ROS_PACKAGE_PATH which i have changed is a subset of old PATH. Is it OK to have a big path as the old one or do I have to change to new path?

Please let me know what i should do

Hi,

Is it possible to access layer by layer scans from velodyne HDL 32-E sensor. If no, Is there any other way round about way to get this functionality ?

Hi, I would like to deploy a catkin package that is built on machine A onto machine B. The tutorials on using catkin over rosbuild highlight that catkin is advantageous in this regard.

Could someone elucidate how to do this. I see that the executables are in catking_ws/devel/lib/package/executable

1. Firstly, is it must to have ROS on machine B ? Considering ROS is not present, which files do we need to copy to get the executable to run

2. Considering that we have ROS on machine B, how can we get the packages built on machine A to work on machine B ? Specifically, which folders to copy and things like that. In this case, how can we have ROS functionalities such as rosrun etc.

Thank you!

Ubuntu 12.04 and Fuerte.

I am planning to use Xsens IMU+GPS and wheel odometry of Pioneer 3 base for the ROBOT_POSE_EKF to estimate the pose of the robot.

I am wondering if any one can give the optimal covariance values for the IMU data and Wheel odom topic.

Thanks

ubuntu 12.04 , Fuerte and rosbuild

I have an octomap in *.ot format which can be downloaded from https://dl.dropboxusercontent.com/u/95042389/level8_extended.ot.zip

I want to create an occupancy grid map from this. Does any one have a straight forward solution for this ?

System Config: Ubuntu 14.04 and ROS Indigo

As mentioned here, http://answers.ros.org/question/22659... I have followed those steps to install ROS drivers from Velodyne to work with VLP 16.

However, when i run

catkin_make

I get the following errors

[ 61%] Built target ringcolors_node

[ 63%] Linking CXX shared library /home/iirav/catkin_ws/devel/lib/libvelodyne_rawdata.so

[ 70%] Built target ringcolors_nodelet

/usr/bin/ld: /usr/local/lib/libyaml-cpp.a(conversion.cpp.o): relocation R_X86_64_32 against `.bss' can not be used when making a shared object; recompile with -fPIC

/usr/local/lib/libyaml-cpp.a: error adding symbols: Bad value

collect2: error: ld returned 1 exit status

make[2]: * [/home/iirav/catkin_ws/devel/lib/libvelodyne_rawdata.so] Error 1

make[1]: * [velodyne/velodyne_pointcloud/src/lib/CMakeFiles/velodyne_rawdata.dir/all] Error 2

make: * [all] Error 2

Invoking "make -j8 -l8" failed

Any suggestions pls ?

Hi all,

I m using the ROS driver for SICK LMS511-10100 from here: https://github.com/pangfumin/lms511_l...

This returns me an error saying:

*** iirav@iirav:~$ rosrun laser_node laser_node       

Attempting to connect to Sick LMS 5xx @ 192.168.0.1:2111                                               A Timeout Occurred - SickLMS5xx::_setupConnection: select() timeout!                             A Timeout Occurred - SickLMS5xx::_setupConnection: select() timeout!                               [ERROR] [1496664746.220065882]: Initialize failed!

I also tried, setting one of the ethernet port to 192.168.0.10, but still ending up with the same error.

Can anyone help in getting this to work ?

Ubuntu 12.04 and fuerte

I have a bag file of 400 seconds length.

I would like to split it into two bag files of 150 seconds and 250 seconds.

There is an option to split bag files while recording using option --split, but now I already have a recorded one.

What can be done?

Thanks

Hi,

How are the Reference Frames used in VLP 16 and HDL 32 differ from each other and How to convert them into a common frame of reference ?

I have point cloud data gathered from VLP 16 and HDL 32. May I know how their axes, X, Y, Z are oriented and how do these axes change between these two devices.

I would like to convert my HDL 32 data into the same frame of reference as that of VLP 16 so that both points returned by both geometrically and metrically mean the same, considering that their HDL 32 sits on top of VLP 16 at a height of 30 cm.

Thank you for your time!

Ubuntu 12.04, fuerte and Rviz

I would like to visualize the data generated by the /odom topic by gps_common package and the data from the laser range finder.

So I would like to know how the frome ID can be found out in general?

Thanks, Sai