compute the unit vector given the angle
显示 更早的评论
Hi guys,
How to compute the unit vector given the direction? Is there any function in matlab to do this task.
Thanks
回答（3 个）
Walter Roberson
2012-5-4
编辑：Walter Roberson
2018-12-10
For angle theta in radians,
%[x, y] = pol2cart(1, theta); %-> incorrect
[x, y] = pol2cart(theta, 1); %repaired
3 个评论
Kye Taylor
2012-5-4
pol2cart(theta,1)?
Walter Roberson
2012-5-4
Urrr, yes.
Kye Taylor
2012-5-4
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
2016-1-9
If vector 'v' points in the desired direction, then do this to make it a unit vector:
v = v/norm(v);
Kye Taylor
2012-5-4
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)]
1 个评论
jack
2016-1-9
How can you apply your answer to higher dimensions?
类别
在 帮助中心 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息
2018-12-10
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
