Getting the error:Subscript indices must either be real positive integers or logicals.

Question

NMK 2017-2-6

关闭： MATLAB Answer Bot 2021-8-20

Hi I am trying to run:

theq=thetav(min(abs(c-dcv))); but it gives me this error: Subscript indices must either be real positive integers or logicals.

I even tried to to do something like:

A=abs(c-dcv); theq=thetav(min(A));

it still says the same.

c is a 1x1 double and dcv is a 100x1 double.

Would appreciate any advice on fixing this.

Thanks,

Stephen23 2017-2-6

Please tell us exactly what this command displays:

min(abs(c-dcv))

此问题已关闭。

Answer 1

dbmn 2017-2-6

The problem is, that you try to access the 4.275th (or smth) element of thetav. You can only access Elements 1 to infinity (indexing).

This wont work:

theq=thetav(4.75);

but this will:

theq=thetav(4);

You should try to reference by indices. For example with

theq=thetav(A==min(A));