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Showing posts from October, 2013

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Simulation of URDF, Gazebo and Rviz | ROS Noetic Tutorial 8

Design a User-defined robot of your choice (or you can use the URDF file) and enable the LIDAR Scanner so that any obstacle placed on the path of the light scan will cut the light rays. Visualize the robot in the Gazebo workspace, and also show the demonstration in RViz.   (NB: Gain knowledge on wiring URDF file and .launch file for enabling any user-defined robot to get launched in the gazebo platform.) SLAM : One of the most popular applications of ROS is SLAM(Simultaneous Localization and Mapping). The objective of the SLAM in mobile robotics is to construct and update the map of an unexplored environment with the help of the available sensors attached to the robot which will be used for exploring. URDF: Unified Robotics Description Format, URDF, is an XML specification used in academia and industry to model multibody systems such as robotic manipulator arms for manufacturing assembly lines and animatronic robots for amusement parks. URDF is especially popular with users of the Robo

Installing Network Simulator 2 (ns-2.35) in Ubuntu 13.10 (64 bit)

This post will tell the installation steps for NS2 under Ubuntu 13.10. Step 1:  Download NS2 package (ns-allinone-2.35) Step 2:  Copy the file to /home/pradeep folder (you can use your corresponding home path). Step 3:  Open the terminal and execute the commands one by one Prompt:- sudo apt-get install build-essential autoconf automake libxmu-dev  (all these packages may not be needed, but install all the above for a safer installation of ns2) Prompt:- tar zxvf ns-allinone-2.35.tar.gz Prompt:- cd ns-allinone-2.35 Open the file (~ns-2.35/linkstate/ls.h)  using gedit or vi or vim and in line number 137 and change the following line void eraseAll() { erase(baseMap::begin(), baseMap::end()); } to void eraseAll() { this->erase(baseMap::begin(), baseMap::end()); } Prompt:- ./install  ns2.35 on ubuntu Once the installation is completed you may see the screen like the image given below. Copy the PATH and LD_LIBRARY_PATH information in to your variable, you ma

Tracegraph installation in Ubuntu 13.10 (64 bit)

Installing Tracegraph in Linux is always a challenge and that too in a 64 BIT operating System. This post will help the readers in installing the tracegraph comfortably in Ubuntu 13.10 (64 bit OS). You may refer the older post too:  http://www.nsnam.com/2013/02/how-to-install-tracegraph-in-64-bit.html Ubuntu 13.10 is revamped with great features and also there are some limitations while installing 32 bit softwares in 64 bit OS. So here are the steps in Installing Tracegraph in Ubuntu 13.10 Download the Tracegraph.tar.gz file and copy it to the /home/username folder Enter the following commands one by one  Untar it by entering the command, " tar xvzf tracegraph.tar.gz " cd tracegraph202 ./trgraph  (if this command gives you ./trgraph command not found, the follow the next step) sudo apt-get install  lib32z1 lib32ncurses5 lib32bz2-1.0 libxi6 libxtst6 libxrender1 libxtst6:i386 libXp6:i386 libXt6:i386 The above command will fetch various libraries from the inter