MATLAB VECTOR FIELDS j COMPONENT

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Talha Yagli
Talha Yagli 2022-12-9
评论： VBBV 2022-12-9
Hi everbody , I am trying to create a function tthat take a vector fforce field from user and seperate its i j k components.
ı am thinking to take the input as symfun and subs ,for example (i=1,j=0,k=0) for i component but as you can see matlab reads j as i (input was xi+yj+kz and the output of force_field variable xi+yi+zk) how can ı fix it ?

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回答（1 个）

VBBV
VBBV 2022-12-9
编辑：VBBV 2022-12-9
Ran in:
syms x y z i j k t r
f = dot([x y z],[i j k])
f = 
ff = symfun(f,[x y z i j k])
ff(x, y, z, i, j, k) = 
subs(ff,{x y z},{1 0 0})
ans(x, y, z, i, j, k) = 
i
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Talha Yagli
Talha Yagli 2022-12-9
编辑：Talha Yagli 2022-12-9
thank you , but how can ı get the f as an input form the user
VBBV
VBBV 2022-12-9
When the user enters inputs in form of
[x y z i j k]
It is read into say X , then do
f = dot(X(1:3),X(4:6))

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