How can I change all numbers in matrix to 1? except for 0

How can I change all numbers in matrix to 1? except for 0

I want to make the matrix which has 1(all the numbers) or 0.

Answer 1

[Voss]

One way:

M = randi(4,[5 5])-2 % a matrix with zero and non-zero elements

M = 5×5

-1 0 0 1 2 -1 -1 2 1 2 -1 1 -1 1 0 2 0 -1 1 2 0 0 1 2 1

M(M ~= 0) = 1 % replace non-zero elements with ones

M = 5×5

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

Another way:

M = randi(4,[5 5])-2 % a matrix with zero and non-zero elements

M = 5×5

-1 2 1 1 2 -1 2 2 0 -1 2 -1 0 2 -1 1 -1 1 -1 -1 -1 -1 0 0 -1

M(logical(M)) = 1 % replace non-zero elements with ones

M = 5×5

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

Answer 2

[Image Analyst]

Try this

outputMatrix = inputMatrix ~= 0

Answer 3

[Walter Roberson]

logical(inputMatrix)

However this will fail if the input includes nan