image rotation with equations?

xrot = x*cos(θ) − y*sin(θ)
yrot = x*sin(θ) + y*cos(θ)

hold for images as well. can i rotate image with them?

Answer 1

[Walter Roberson]

Yes, but you will encounter the same limitations as with imrotate(), that you will need to end up with a rectangular grid that the rotated image takes up part of. image() and imagesc() and imshow() can only deal with horizontally and vertically aligned matrices.

You should have a look at hgtransform()

Answer 2

[Matt J]

You could, when you incorporate them into imtransform(). But it would be easier just to use imrotate().