odometry dose not show in rviz
hello,
I have a differential-drive robot, and sending odometry to ubuntu is done yesterday. I tried to have a look with rviz but failed and don't know why. It simply follows the example codes and I choose "odom" as the fixed frame in rviz and add an odometry and attach "odom" as well as its topic but nothing comes out on the grid. Odometry info can be seen via rostopic echo /odom