Roslaunch cannot find launch file
I have installed uvc_camera package by running:
~/ros_catkin_ws/src $ git clone git://github.com/ktossell/camera_umd.git
~/ros_catkin_ws $ catkin_make_isolated --pkg camera_umd --install
Everything went fine, no errors. But when I'm trying to launch a launch file from this package it says it cannot find it:
~/ros_catkin_ws $ ls /dev/video*
/dev/video0 /dev/video1
~/ros_catkin_ws $ roslaunch uvc_camera stereo_node.launch
[stereo_node.launch] is neither a launch file in package [uvc_camera] nor is [uvc_camera] a launch file name
The stereo_node.launch is still in the src folder:
~/ros_catkin_ws $ sudo find / -name stereo_node.launch
~/ros_catkin_ws/src/camera_umd/uvc_camera/launch/stereo_node.launch
Is it normal that after installation the .launch file is still in the /src folder? If no, then would this be an installation issue? If yes, then why roslaunch cannot find it?