I have a ROS node which publishes a topic /vslam/pose
which is of type geometry_msgs/PoseWithCovariance
message. Running:
rostopic type /vslam/pose | rosmsg show
gives the following:
std_msgs/Header header
uint32 seq
time stamp
string frame_id
geometry_msgs/PoseWithCovariance pose
geometry_msgs/Pose pose
geometry_msgs/Point position
float64 x
float64 y
float64 z
geometry_msgs/Quaternion orientation
float64 x
float64 y
float64 z
float64 w
float64[36] covariance
I'd like to use rqt_plot to plot a field (say Point position x). But I tried everything to "call" it in rqt_plot, but it doesn't work, the rqt_plot window shows like it should but the field is not plotted. From rostopic echo /vslam/pose
I know that it is being published, so everything is working except rqt_plot. Also if I write inside the text-input-field in rqt_plot, like they say in the docs (topic-name/field:field:field): /vslam/pose/x
or /vslam/pose/x:y:z
nothing shows.
So basically I'd like to know how to get one of the position fields into rqt_plot. And how correctly refer to these message fields.
Thanks!
Have a look at this. It states, that you need the full path to your field. In your case that would be:
/vslam/pose/pose/pose/position/x:y:z