HI im kind of new to Matlab. What is the problem with my code displaying the error "Index exceeds the number of array elements (0)."

load database
D=[];
for (i=1:size(F,1))
    d=sum(abs(F(i)-f))
    D=[D d];
end

[Stephen23]

This could happen if F has zero columns and non-zero rows:

F = nan(3,0);
i = size(F,1);
F(i)

Index exceeds the number of array elements (0).

Answer 1

[Hernia Baby]

You will see F value on the work space.

As Stephen Cobeldick says, F may have zero columns and non-zero rows.