identity matrix nth order

n = [1:1:20];

M=eye(n).*0.02

its not working !! i got an error that says eye() can't draw n dimensional arrays..can it be corrected ?

if not is there any other alternative to this?

Answer 1

[ANKUR KUMAR]

n=20;
eye(n) % identity matrix of order 20
eye(randi(50,1,1)) % identity matrix of a random order generated by randi

Answer 2

[VBBV]

n = [1:1:20];
for k = 1:length(n)
    M{k}=eye(n(k)).*0.02;
    X = sprintf('Identity matrix of order %0d',k);
    disp(X)
    I = M{k}
end 

Identity matrix of order 1

I = 0.0200

Identity matrix of order 2

I = 2×2

0.0200 0 0 0.0200

Identity matrix of order 3

I = 3×3

0.0200 0 0 0 0.0200 0 0 0 0.0200

Identity matrix of order 4

I = 4×4

0.0200 0 0 0 0 0.0200 0 0 0 0 0.0200 0 0 0 0 0.0200

Identity matrix of order 5

I = 5×5

0.0200 0 0 0 0 0 0.0200 0 0 0 0 0 0.0200 0 0 0 0 0 0.0200 0 0 0 0 0 0.0200

Identity matrix of order 6

I = 6×6

0.0200 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0.0200

Identity matrix of order 7

I = 7×7

0.0200 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0.0200

Identity matrix of order 8

I = 8×8

0.0200 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0.0200

Identity matrix of order 9

I = 9×9

0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0.0200

Identity matrix of order 10

I = 10×10

0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0.0200

Identity matrix of order 11

I = 11×11

0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0.0200 0

Identity matrix of order 12

I = 12×12

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0

Identity matrix of order 13

I = 13×13

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0

Identity matrix of order 14

I = 14×14

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0

Identity matrix of order 15

I = 15×15

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0

Identity matrix of order 16

I = 16×16

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0

Identity matrix of order 17

I = 17×17

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0

Identity matrix of order 18

I = 18×18

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0

Identity matrix of order 19

I = 19×19

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0

Identity matrix of order 20

I = 20×20

0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0200 0 0 0 0 0 0 0 0 0 0

Try using a loop