Create Size 256 × 150 image that have 256 colors on it starting 0 till 255 (the first row is black, the last row is white, and in between all the gray shades).

.Create Size 256 × 150 image that have 256 colors on it starting 0 till 255 (the first row is black, the last row is white, and in between all the gray shades).

[Walter Roberson]

Hint: repmat()

[Abd a]

Thank you.

Answer 1

[DGM]

Something like this:

A = uint8(repmat((0:255).',[1 150]));
imshow(A)

[John D'Errico]

Please don't do what are obvious homework assignments for students. It does not help the student, and it hurts Answers by convincing the student they can post all of their homework problems with no effort shown.

[Abd a]

Thank you, but I put the question after I searched. I am still learning and I just wanted to create the image, but it appeared in one color, and this is not homework. <3

[DGM]

It didn't really seem like an obvious homework assignment to me. Granted, it's often difficult to distinguish a slightly-abstracted statement of a beginner problem from a contrived homework problem.