compute the unit vector given the angle
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Hi guys,
How to compute the unit vector given the direction? Is there any function in matlab to do this task.
Thanks
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Answers (3)
Walter Roberson
on 4 May 2012
Edited: Walter Roberson
on 10 Dec 2018
For angle theta in radians,
%[x, y] = pol2cart(1, theta); %-> incorrect
[x, y] = pol2cart(theta, 1); %repaired
3 Comments
Kye Taylor
on 4 May 2012
It's unusual that the inputs to the function don't match the "r-theta" convention that is used so often to identify the coordinate space.
Roger Stafford
on 9 Jan 2016
If vector 'v' points in the desired direction, then do this to make it a unit vector:
v = v/norm(v);
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Kye Taylor
on 4 May 2012
Given the angle
theta
in radians (counter-clockwise is positive theta, theta = 0 points in the positive x-direction) your unit vector is
u = [cos(theta),sin(theta)]
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