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Plot poseStamped topic in rqt_plot/RViz

Hi,

I have a topic which is built like that:

int32 id
float64 size
geometry_msgs/PoseStamped pose

I am seeing it if I do rostopic list and rostopic echo without any problem. I would like to see it through rqt_plot and/or RViz but I am not able to do so.

The topic is named

/apriltag2_detections

I do

rosrun rqt_plot rqt_plot

And I can arrive only to see the field id and size. Like from the following screenshot (you can also see a rostopic echo output on the right of the image):

image description

Could you tell me why? What am I doing wrong?

Thanks a lot for the help.