output doesn't match ros2 topic echo

[stewpend0us]

When I use regular old "ros2 topic echo" I get different output then I get when using plotjuggler. In this screen shot "altitude" and "stbd_velocity" are clearly not matching up.

ubuntu 22.04 installed with sudo apt install ros-humble-plotjuggler ros-humble-plotjuggler-ros

[facontidavide]

This seems to be a custom message, ins't it? Can you kindly share a rosbag recorded as MCAP (option -s mcap) ?

[stewpend0us]

let me know if you need more. I confirmed this does contain the issue. "altitude" especially appears to be undefined rosbag2_2023_11_28-10_47_45.tar.gz

[facontidavide]

thanks

[facontidavide]

Not having the message type tetra_veh_interfaces it is hard for me to debug.

Can you please check if opening directly the MCAP file using PlotJuggler branch "ros_refactored" fixes the issue?

[stewpend0us]

Yes! that looks much better

[stewpend0us]

Not while running it live though...

[facontidavide]

please send me the code with tetra_veh_interfaces to reproduce, otherwise I can't run rosbag play

[stewpend0us]

here is the contents of SprintNav.msg: is this helpful or do you need more?

byte first_byte
byte second_byte
byte protoversion
uint16 message_id
uint16 message_size
byte counter
uint16 gap
byte version
float64 time_of_validity
float64 latitude_deg
float64 longitude_deg
float64 depth
float32 altitude
float32 roll_deg
float32 pitch_deg
float32 heading_deg
float32 fwd_velocity
float32 stbd_velocity
float32 down_velocity
float32 fwd_ang_rate_degps
float32 stbd_ang_rate_degps
float32 down_ang_rate_degps
float32 sound_velocity
float32 temperature_c
float32 position_quality
float32 heading_quality_deg
float32 velocity_quality
uint16 status
uint16 crc

bool status_system_error
bool status_is_hybrid_mode
bool status_heading_invalid
bool status_altitude_invalid
bool status_velocity_invalid
bool status_depth_invalid
bool status_sound_velocity_invalid
bool status_temperature_invalid
bool status_position_invalid
bool status_utc_time_invalid

[facontidavide]

If you give the code with the ROS package (containing package.xml, CMaeLists.txt and the .msg file), I would really appreciate

[stewpend0us]

Here is a stripped down version. does this work? tetra_veh_interfaces.tar.gz

[facontidavide]

Just tried the main branch of this repo + ros_refactored branch of PlotJuggler and seems like everything works correctly.

I will temporarily close this issue, but please try this yourself and let me know if it works for you.

I will release soon PlotJuggler 3.9 and plotjuggler_ros 2.0, that will contain these changes.

[stewpend0us]

yes that combo does seem to be working. Thank you for the quick fix!!