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
MySQL and MariaDB uses innoDB for storing the tables in a file format called Antelope. For large sites, the Antelope format doesn't support more columns which makes the backup option a tedious process.
so it will be advised to change the file format to Barracuda. There are various options to do that. Here is a small workaround to change it to barracuda.
Open Mysql from the command prompt and execute the commands one by one
$] mysql -u root -p
The username is root here
It will ask for the password: (Input the password here).
mysql> select version();
mysql> show variables like "%innodb_file%";
The output will be like this
+--------------------------+----------+
| Variable_name | Value |
+--------------------------+----------+
| innodb_file_format | Antelope |
| innodb_file_format_check | ON |
| innodb_file_format_max | Antelope |
| innodb_file_per_table | ON |
+--------------------------+----------+
4 rows in set (0.00 sec)
mysql> SET GLOBAL innodb_file_format = barracuda;
mysql> show variables like "%innodb_file%";
+--------------------------+-----------+
| Variable_name | Value |
+--------------------------+-----------+
| innodb_file_format | Barracuda |
| innodb_file_format_check | ON |
| innodb_file_format_max | Antelope |
| innodb_file_per_table | ON |
+--------------------------+-----------+
4 rows in set (0.00 sec)
so it will be advised to change the file format to Barracuda. There are various options to do that. Here is a small workaround to change it to barracuda.
Open Mysql from the command prompt and execute the commands one by one
$] mysql -u root -p
The username is root here
It will ask for the password: (Input the password here).
mysql> select version();
mysql> show variables like "%innodb_file%";
The output will be like this
+--------------------------+----------+
| Variable_name | Value |
+--------------------------+----------+
| innodb_file_format | Antelope |
| innodb_file_format_check | ON |
| innodb_file_format_max | Antelope |
| innodb_file_per_table | ON |
+--------------------------+----------+
4 rows in set (0.00 sec)
mysql> SET GLOBAL innodb_file_format = barracuda;
mysql> show variables like "%innodb_file%";
+--------------------------+-----------+
| Variable_name | Value |
+--------------------------+-----------+
| innodb_file_format | Barracuda |
| innodb_file_format_check | ON |
| innodb_file_format_max | Antelope |
| innodb_file_per_table | ON |
+--------------------------+-----------+
4 rows in set (0.00 sec)
mysql> SET GLOBAL innodb_file_format_max = barracuda;
Query OK, 0 rows affected (0.00 sec)
mysql> show variables like "%innodb_file%";
+--------------------------+-----------+
| Variable_name | Value |
+--------------------------+-----------+
| innodb_file_format | Barracuda |
| innodb_file_format_check | ON |
| innodb_file_format_max | Barracuda |
| innodb_file_per_table | ON |
+--------------------------+-----------+
4 rows in set (0.00 sec)
See the picture below
 |
| Barracuda |
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