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

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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??"
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Accepted Answer

Image Analyst
Image Analyst on 23 Nov 2021
It's a FAQ, probably the #1 most FAQed FAQ.
Here is a thorough discussion of how that error occurs:

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