Warning in Mobile Robotics

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I am very new to Matlab. I was following exactly same example from MobileRoboticsSimulationToolbox-Robot Visualizer-Example2 : Maps and Lidar.
And I can't create a map, because this warning and error came up when I run this code below.
viz = Visualizer2D;
viz.showTrajectory = false;
load exampleMap
viz.mapName = 'map';
pose = [3; 4; 0];
viz(pose)
Warning: Variable 'map' originally saved as a robotics.OccupancyGrid
cannot be instantiated as an object and will be read in as a uint32.
error : internal.createMapFromName (line 39)
Map name 'map' must be a robotics.OccupancyGrid or robotics.BinaryOccupancyGrid object.
error : Visualizer2D/setupImpl (line 75)
obj.map = internal.createMapFromName(obj.mapName);

Accepted Answer

Walter Roberson
Walter Roberson on 26 Nov 2021
You attempted to load into a MATLAB session that does not have the class definitions for a robotics occupancy grid. Possibly you do not have the toolbox installed.
  2 Comments
Walter Roberson
Walter Roberson on 26 Nov 2021
You need Robotics System Toolbox

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