HOW CAN I CALCULATE COORDIANTE POINTS OF CIRCLE?

I have set of coordinate points of a circle and i want to rotate (15 degree ) the circle about x axis in counter clock wise direction. can any one explain me how to calculate coordinate points using matlab?

[James Tursa]

You have a set of (x,y,z) coordinates that you want rotated in 3D?

Answer 1

[Walter Roberson]

Build a rotation matrix . makehgtform can be useful for that. Then construct

[X(:), Y(:), zeroes(numel(X),2)]

and right multiply by the transform matrix . X and Y are the coordinates of the points on the circle . Discard the 4th column of the results of the multiply and what remains is columns of X Y Z coordinates .