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HOW CAN I CALCULATE COORDIANTE POINTS OF CIRCLE?

Asked by Deva Narayanan on 7 Dec 2018
Latest activity Commented on by James Tursa
on 7 Dec 2018
CIRCLE.jpg
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?

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

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1 Answer

Answer by Walter Roberson
on 7 Dec 2018

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 .

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