Magnitude of a vector with unit

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RH
RH 2023-3-12
评论： RH 2023-3-12
Ran in:
I am having a trouble getting the numerical value of the magnitude of a vector with a unit.
clearvars;
u=symunit;
x=[1 2 3]*(u.m);
norm(x)
ans = 
x=[1 2 3];
norm(x)
ans = 3.7417
x=[1 2 3]*(u.m);
y=[5 6 7]*(u.m);
z=norm(x)/norm(y)
z = 
vpa(z)
ans = 
As it can be seen above, Matlab does not give me the numerical value of the magnitude when units are present.

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采纳的回答

Paul
Paul 2023-3-12
Ran in:
Looks like simplify pulls the unit^2 out of the root
u=symunit;
x=[1 2 3]*(u.m);
norm(x)
ans = 
simplify(norm(x))
ans = 
vpa(ans)
ans = 
x=[1 2 3]*(u.m);
y=[5 6 7]*(u.m);
z=simplify(norm(x)/norm(y))
z = 

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