Create Matrix using only zeros and ones

please how can i create this matrix using only the two commands "zeros" and "ones"

1 0 1 0

1 0 1 0

1 0 1 0

1 0 1 0

and this one :

0 0 0 1

0 0 0 1

0 0 0 1

1 1 1 1

[Steven Lord]

Assuming that you're actually allowed to use zeros, ones, and concatenation, since this sounds like homework I won't give the solution. But I will give a hint: break the matrices into rectangular pieces where each piece consists only of 0's or 1's. Build the pieces then put the pieces together.

[lamiae hmimou]

i found out how to do it ! thanks for the hint it's a good method

[M VENKATESH]

How

Answer 1

[William Alberg]

This should do it for the first matrix

A = zeros(4,4);
A(:,1) = 1; % set column 1 to 1
A(:,3) = 1; % set column 3 to 1
disp(A)

Im sure that you can use this example to do it for the second example

[lamiae hmimou]

thank you so much , that helped ! i'll use the same method to solve the other ones .. Thanks again

Answer 2

[DGM]

How about an example using concatenation only. No arithmetic composition or array indexing.

e = ones(2);
c = zeros(3,2);
n = ones(1,2);
l = zeros(1,2);
m = ones(2,6);
s = zeros(11,2);
f = zeros(2,6);

result = [s [f; [[e; c] [c; n; l] [e; c]]; m; f] s]

result = 11×10

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0

imshow(result)

[M VENKATESH]

Using the zeros and ones commands create a 3 x 5 matrix in which the first second, and fifth columns are 0s, and the third and fourth columns are 1s.how can we create it?

[DGM]

It can be created using concatenation as shown I intentionally chose to make my example demonstrate the concept instead of replicating the exact task. If you can assemble Lego bricks, then this shouldn't be too difficult to figure out.

To be honest, your assignment is extremely simple. In fact, it's simpler than the OP's simple assignment. It's so simple that even concatenation is overcomplicated. It could always be done without concatenation.

result = zeros(11,10);
result([3 4 8 9],[3 4 7 8]) = 1;
result([6 8 9],[5 6]) = 1

result = 11×10

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0

imshow(result)

I suppose you could use ones(1) instead of 1 if you wanted to.

[M VENKATESH]

Thank u so much

[M VENKATESH]

Can u please sol this . Using the zeros and ones commands create a 3 x 5 matrix in which the first second, and fifth columns are 0s, and the third and fourth columns are 1s.

[Walter Roberson]

hint:

A = [zeros(8,1), ones(8,1), zeros(8,1)]

A = 8×3

0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0