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Neural Network error in train

Asked by Tonu

Tonu (view profile)

on 22 Jun 2013

Hi friends,

I get the following error while trying to use neural network toolbox in matlab. I am new to its use, thereby any help would be crucial.

Here are my codes

Basically I have a vector (1X75) as the input and to it I have two outputs, thereby I have created one loop to repeat the same value to for each input. *

I get the following error :

Error using trainlm (line 109)
Input data size does not match net.inputs{1}.size. *
% My codes 
load data 
I=data'; % 1 X 75 row vector
for i = 1 : length(data)
    z(1,i) = 0.0029;
    h(1,i) = 20;
O= [z;h]; % 2 X 75 vector
R=[0 1; 0 30 ]; % limits for the two ouput values
S=[5 2]; % No of inner  and output neurons  
   net = newff(R,S,{'tansig','purelin'}); 




Tonu (view profile)


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1 Answer

Answer by Greg Heath

Greg Heath (view profile)

on 25 Jun 2013
Accepted answer

NEWFF interprets R as the limits of a two dimensional input; NOT an output.

use minmax(I) instead of R.

Thank you for formally accepting my answer


1 Comment


Tonu (view profile)

on 26 Jun 2013

Thank you Greg for pointing my mistake.

Greg Heath

Greg Heath (view profile)

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