how to generate random numbers in space

Dear All, If I have points (x,y) In space such as:

x=[   5  5  5  13  12  13  28  21  25  31  39  39  45  41  49  ];

y=[   9  25  48  4  19  39  37  45  50  9  2  16  22  30  31  ];

what is the best way to generate random matrix in this space

[(x11 ,y11), (x12 ,y12), (x13 ,y13),…;
(x21 ,y21), (x22 ,y22), (x23 ,y23),…;
(x31 ,y31), (x32 ,y32), (x33 ,y33),…];

[Jan]

The result does not have valid Matlab syntax. Therefore we cannot guess reliably, what this should mean. Please edit your question to clarify it.

Answer 1

[the cyclist]

I am not 100% sure I understand what you mean, but this may help you get started:

x=[   5  5  5  13  12  13  28  21  25  31  39  39  45  41  49  ];
y=[   9  25  48  4  19  39  37  45  50  9  2  16  22  30  31  ];

N = numel(x);

idx = randi(N,3);

Mx = x(idx);
My = y(idx);

Answer 2

[Azzi Abdelmalek]

I don't know why you are calling (x,y) point in space?

n=50;
M=cell(3,4)
out=cellfun(@(x) randi(n,1,2),M,'un',0)
celldisp(out)