This is my program... i have this error ??? Subscript indices must either be real positive integers or logicals. how can i fix it?

x=wavread('E:\project\kani imp\akk'); l=size(x)

l =

       78336           2

>> s=1; >> for t=[4000:4000:l] sum=0; for t1=[s:t] sum=sum+(sum(abs(x.^2))); en=sum; enm=en+1; end end

Answer 1

[Azzi Abdelmalek]

Your are using sum as a variable and as a function

maybe this is what you want

x=rand(78336,2);  % your data
l=size(x,1);
s=1
for t=[4000:4000:l];
  som=0; 
  for t1=[s:t] 
      som=som+(sum(abs(x.^2)));
      en=som;
      enm=en+1; 
  end
end