damonkohler's profile - activity

Is there a topic, actionlib, or service interface for controlling the recording of bag files?

Cartographer is state-of-the-art and works indoors/outdoors in 2D/3D. We published a paper on our 2D algorithms here: http://static.googleusercontent.com/m...

Cartographer requires linear acceleration to do gravity alignment. We do provide a "flat_world_imu" for your use case here: https://github.com/googlecartographer...

Resolved here: https://github.com/googlecartographer...

"imu_msg" as a frame name sounds fishy to me. Do you have an IMU on your robot or not? If you don't , you'll need to disable using IMU data in your configuration. Based on the imu_tracker error, I expect your IMU data is somehow incorrect/bogus.

ROS messages don't have metadata. Timestamps are encoded in the Header sub-message of "stamped" messages. So, message.getHeader().getStamp().

Is anyone working on upgrading to OpenNI 2.0?

Is there a migration plan to C++11 in the works?

Is there an implementation of a fake IMU for Stage? For example, I'd like to publish IMU readings as I teleop the simulated robot.

Are they any REPs or other documentation describing retry strategies for topics and services?

The documentation states:

Since we are gathering data across the time of the scan, it is often important that the chosen target_frame is actually a fixed frame.

What's meant by "fixed" in this context? I assume it means that the transform between the laser scanner frame and the target frame is static?

Is it possible to configure the diagnostic aggregator to ignore a particular diagnostic message? In my case, the xsens_driver always publishes GPS warnings since there is no GPS attached.

I understand that this could be addressed at the driver layer, but it seems like something useful to have at the aggregator level.

Is there a tool for slicing a bag file by time (e.g. cut out 30m of data from the middle of a bag)? Or does everyone just use a filter over the timestamps?

It's a little unclear whether the imu_drivers stack supports the newer IMUs. In the summary, it claims to support both 3DM-GX2 and 3DM-GX3 protocols. However, further down it only speaks about the 3DM-GX2 protocol.

Are the newer devices supported?

I'd like to have the gcc invocations that result from a rosinstall command printed to stdout. Is that possible?

I'd like to generate an image similar to the one at the end of the demo video here: http://www.ros.org/wiki/hector_mapping

In the image, the generated map and the pose of the /base_link frame over time in the /map frame are overlayed. What is the best way to build such an image?

Has anyone had success with "pausing" a gmapping session (e.g. to change a battery) and starting it up again? Is there a recommended procedure?

What is the best way to record a video of rviz during rosbag playback?