MATLAB: Subscript indices must either be real positive integers or logicals when using a function in a nested for

digital signal processing

I use this function in a nested for and I get this error: subscript indices must either be real positive integers or logicals
Zpred = h(Xpred)
where Xpred is a matrix
function zk=h(x)
zk(1,:)=sqrt(900+(x(1,:)-30).^2);
zk(2,:)=x(2,:).*(x(1,:)-30)./zk(1,:)
can anyone help me to find the error

Best Answer

I think the FAQ explains it really well: http://matlab.wikia.com/wiki/FAQ#How_do_I_fix_the_error_.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22.3F
When you're calling this:
Zpred = h(Xpred)
at that point, it thinks h is an array, not a function like you thought.
Your script/function is not called h.m is it? Or else somethere else earlier in your code, you must have used h in a way that created an array called h.
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