How do i correct this mistake in my matlab program? Please help.

ex(1)=lx/J %%first i term in ex matrix
ex(2)=mx/J %%second j term in ex matrix
ex(3)=nx/J %%third k term in ex matrix
for i=1:9
N_matrix(1,i)=N(rem(i,3))*ex(i / 3);(ERROR HERE)
end
Attempted to access ex(0.333333); index must be a positive integer or logical.
Error in practisee2 (line 225)
N_matrix(1,i)=N(rem(i,3))*ex(i / 3);

5 个评论

Attempted to access ex(0.333333); index must be a positive integer or logical.
That is not a MATLAB error message. It might be an Octave error message. MATLAB error messages do not mention the value of the invalid subscript.
@Walter This is a Matlab error message. I am currently using it.
Yes. It is 2015 version. How do i eliminate the error??
First you explain what you intend it to mean. In one of your related posts you said that ex is a function, but it was clear that you had initialized ex as a variable.

请先登录,再进行评论。

回答(1 个)

ex(i / 3); Should be an integer value not a float
So try ex(i)/3

3 个评论

This changes the meaning of the expression, although the error is removed.
you have to explain what you want to do learn about indexing first
What is the intended meaning of ex(i/3) when i is 1 ?

请先登录,再进行评论。

类别

帮助中心File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by