Attempt to reference field of non-structure array.

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hi I'm trying to estimate the speed of a motor using Hopfield neural network learnh and I get the following error:
Attempt to reference field of non-structure array.
Error in learnh>apply (line 102) dw =*a*p';
Error in learnh (line 73) [out1,out2] = apply(varargin{:});
Error in RNA (line 39) dw = learnh([],P11,[],[],T,[],[],[],[],[],lp,[]);
anyone can help me?

Accepted Answer

Andrew Reibold
Andrew Reibold on 4 Sep 2014
Accessing is your problem.
First make sure this is really what you meant to type. If it is, make sure really exists. You can stop the code before the line to check.
Other than this, we don't have alot of information to go off of here

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