rosGSCOP's profile - activity

Hi. I have Indigo on my Machine1 and Jade on my Machine2. I recorded a bag of messages under Indigo and I wanted to reuse this bag in Jade.When I try to listen to the topic in which I publish the messages, I got the following error.


I know it must have something to do with the version incompability or the fact that the messages are created on different machines.
Does anyone of you have a solution to this problem. Or an idea to convert the messages in order to satisfy the compability.
Thanks in advance !

Hi. I wanted to convert a message of type sensor_msgs/PointCloud2 stored in a bag file to pcd by using the command:
rosrun pcl_ros bag_to_pcd input_file.bag /topic output_directory
My problem is that the final file 0.000000000.pcd only contains the 256 points. It seems like the precedent streams are erased. Instead of having 2064 + 1226 + 256 =3546 points, I got only 256.

Got 2064 data points in frame /ORB_SLAM/World with the following fields: x y z
Data saved to /home/chews/pcd_ORB/bag/0.000000000.pcd
Got 1226 data points in frame /ORB_SLAM/World with the following fields: x y z
Data saved to /home/chews/pcd_ORB/bag/0.000000000.pcd
Got 256 data points in frame /ORB_SLAM/World with the following fields: x y z
Data saved to /home/chews/pcd_ORB/bag/0.000000000.pcd

Does anyone know how to save all the data?

Hi. I just discovered the error I committed. Actually, although there 's message (of type sensor_msgs::PointCloud2) coming into the topic /X, they contain no data(no coordinates x,y and z). That's why at the end of the pointcloud-to-pcd conversion, I got no .pcd file.

Hi. Thank you.I don't quite understand your question. Normally, according to the tuto, pcl_ros will output the .pcd file in the directory where I launch this pcl_ros node.

Hi, I wanted to convert my point cloud (of type sensor_msgs::PointCloud2) published in a topic /X to pcd file. I used the builtin rosnode pointcloud_to_pcd (from the tuto http://wiki.ros.org/pcl_ros#pointclou... ). What I typed was:

rosrun pcl_ros pointcloud_to_pcd input:=/X

I verified there are messages coming in the topic / X using rostopic echo. However, at the end, I didn't get a .pcd file in the directory where I launched the rosnode. Do you guys have an idea?

Hi. I am a newbie in ROS. Recently, I start working on the SLAM method(developed by someone else ). I have a node which publishes to the topic /Map. The messages are of type: visualization_msgs/Marker. Example:

x: 0.0703901350498
y: 0.258601367474
z: 0.103628642857

However, the output I wanted is something like point cloud or mesh so that I can import them into simulators like Gazebo. I tried some research online but none of the results answer my question. I wonder if it is possible to convert those Markers into pointcloud or mesh?

Thanks in advance.