Robotics toolbox Custom map compile error

Hey there,

I am using MATLAB 2018a and i have robotics toolbox installed.

I am using it for path planning, the "exampleMaps.mat" map that is already there works just fine but when I make a custom maps it doesn't work.

It shows compile error:

""Undefined function or variable 'simpleMap'.

Error in Untitled12 (line 4)

map = robotics.OccupancyGrid(simpleMap,2);""

this error doesn't come when when i use "exampleMaps.mat"

this is my code

function  b=map()
filePath = fullfile(fileparts(which('PathPlanningExample')),'data','exampleMaps.mat');
load(filePath)
map = robotics.OccupancyGrid(simpleMap,2);
prmSimple = robotics.PRM(map,50);
s=[2 2];
e=[10 2];
path=findpath(prmSimple,s,e)
show(prmSimple)
end

For your information let me tell you that my map is in same directory as "exampleMaps.mat"

Answer 1

[Cam Salzberger]

Hello Divyanshu,

Does your MAT file have a variable in it called "simpleMap"? Because that is what the code is looking for - a variable called simpleMap that has been loaded into the function workspace. If your MAT file uses a different variable name for the map data, simply change "simpleMap" to reference that instead.

As an aside, I prefer to use the load('myMatFile.mat', varName1, varName2) syntax when calling load. That makes it obvious where the variables are coming from.

-Cam