Rotate a data set by degrees?

I have a set of data which should be centered and angle off the origin. Instead it is angled counter clock wise by a certain amount. I want to be able to rotate all data by n degrees to center it. It should "flower" around the black dotted line in the pic.

[Lloyd Koontz]

nvm i finally figured it out

https://www.mathworks.com/matlabcentral/answers/305034-rotate-the-plot-at-45-degree#answer_237296

Answer 1

[Image Analyst]

If you have the x,y coordinates, then use the rotation matrix:

https://en.wikipedia.org/wiki/Rotation_matrix