Cannot install Install erratic_robot stack
I followed the instructions form http://wiki.ros.org/simulator_gazebo/... . But I failed at the first step when I try to install using
sudo apt-get install ros-diamondback-erratic-robot
The error is
E: 无法定位软件包 ros-diamondback-erratic-robot
In English the error is
E: can not locate software package ros-diamondback-erratic-robot.
My operation system is Ubuntu 16.04 and I have installed ROS-kinetic. Can anyone give me some suggestions. Thank you.