about angles between each column
显示 更早的评论
Hi, I have a problem that let me determine the angles between each columns in a m*n matrix. I already know that how to calculate the angle between each column, but how can I store these values in a n*n matrix G where Gij is the angle between ith column and jth column? Here is my code:
function G=angle(a)
[m,n]=size(a);
G1=atand(norm(cross(a(:,1),a(:,1)),dot(a(:,1),a(:,1))));
end
Thank you!
回答（1 个）
Stalin Samuel
2016-3-11
I am not sure about the formula. But you can refer the below code for store the values
[m,n]=size(a);
for it1 = 1:n
for it2 = 1:n
G1(it1,it2)=atand(norm(cross(a(:,it1),a(:,it2)),dot(a(:,it1),a(:,it2))));
end
end
2 个评论
Bo Wang
2016-3-11
Roger Stafford
2016-3-11
That should be 'atan2d' in your code, not 'atand'. The function 'atand' takes only one argument.
类别
在 帮助中心 和 File Exchange 中查找有关 Trigonometry 的更多信息
2016-3-11
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
