How can use ORB_SLAM2 for showing the map?

edit

I can not run ORB_SLAM2. I did the steps in sequence. When I run the following commands, I can not see the map. I also do not get any error. Please guide me.

sami@sami-Vostro-1520:~$ cd ~/orbslam2_catkin_ws 
sami@sami-Vostro-1520:~/orbslam2_catkin_ws$  source devel/setup.bash  
sami@sami-Vostro-1520:~/orbslam2_catkin_ws$ rosrun ORB_SLAM2 Mono /home/sami/orbslam2_catkin_ws/src/ORB_SLAM2/Vocabulary/ORBvoc.txt /home/sami/orbslam2_catkin_ws/src/ORB_SLAM2/Examples/Monocular/TUM1.yaml  

ORB-SLAM2 Copyright (C) 2014-2016 Raul Mur-Artal, University of Zaragoza.
This program comes with ABSOLUTELY NO WARRANTY;
This is free software, and you are welcome to redistribute it
under certain conditions. See LICENSE.txt.

Input sensor was set to: Monocular

Loading ORB Vocabulary. This could take a while...
Vocabulary loaded!


Camera Parameters: 
- fx: 517.306
- fy: 516.469
- cx: 318.643
- cy: 255.314
- k1: 0.262383
- k2: -0.953104
- k3: 1.16331
- p1: -0.005358
- p2: 0.002628
- fps: 30
- color order: RGB (ignored if grayscale)

ORB Extractor Parameters: 
- Number of Features: 1000
- Scale Levels: 8
- Scale Factor: 1.2
- Initial Fast Threshold: 20
- Minimum Fast Threshold: 7
init done 
opengl support available