How to write a range of coordinates (of an area)

I want to get a range of coordinate (x,y) for further calculation of distance between them and a specific points

For example a floor plan of 50x20, how can i get all the points ?in a form of matrix?

Width=50
Length=20
x=[0:Width]
y=[0:Length];

Answer 1

[Walter Roberson]

Width=5;
Length=3;
x = 0:Width;
y =  0:Length;
[X,Y] = ndgrid(x,y);
XY = [X(:), Y(:)];

disp(XY)

     0     0
     1     0
     2     0
     3     0
     4     0
     5     0
     0     1
     1     1
     2     1
     3     1
     4     1
     5     1
     0     2
     1     2
     2     2
     3     2
     4     2
     5     2
     0     3
     1     3
     2     3
     3     3
     4     3
     5     3

[Yuk Wai Kelvin Chow]

thank you very much, i will try that