Why am I getting the error "Array indices must be positive integers or logical values."?

function [Fluindex ] = find_Findex(Signal,timeframe,SampRate,slide )
%FIND_Kurtosis Summary of this function goes here
%   Detailed explanation goes here
channels=size(Signal,2);
nFrames=size(Signal,1)/(timeframe*SampRate);
Fluindex=[];
if slide <=0 
    partition=1;
else
    partition=slide/timeframe;
end
for f = 1:partition:nFrames
    start_ind  =((f-1)*timeframe*SampRate)+1;
    end_ind  = f*timeframe*SampRate;
    Fluind_frame=[];
    for i= 1:channels
        Findex = zeros(2,3,4);
        size(Findex)
        Fluind_frame = zeros(3,4,5,6);
        size( Fluind_frame)
        Fluind_frame(:,i)= Findex (Signal(start_ind:end_ind,i));
    end
    Fluindex=cat(1,Fluindex,Fluind_frame);
end
end
when i run above code its show error like this.
Error using find_Findex 
Array indices must be positive integers or logical values.



"why its showing like this??"

[KSSV]

I don't think what you are showing us is not the complete error. There is no line 34 in the function.

Show us the complete code which gave you this error along with the inputs so that it will help us to help you.

[Deepu S S]

@KSSV please check the attached file

Answer 1

[Image Analyst]

It's a FAQ, probably the #1 most FAQed FAQ.

Here is a thorough discussion of how that error occurs:

https://matlab.fandom.com/wiki/FAQ#.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22