preparets error for using in narxnet

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ZaidiN
ZaidiN 2018-7-12
编辑： ZaidiN 2018-7-14
Following error is encountered with preparets: [x,xi,ai,t]=preparets(net,inputs,{},targets); .... Error using preparets (line 105) Feedback and inputs have different numbers of timesteps.
My Code reads Inputs from a xlsx file and targets with another xlsx file.
filepath='Inputdata.xlsx'; X=xlsread(filepath); % reading the Input file with size 8461*53
filepath='Targetdata.xlsx'; Y=xlsread(filepath); % Reading the Target Input file size 1*53
inputs=num2cell(X,1); targets=num2cell(Y,1);
trainFcn='trainlm'; inputDelays=1:2; feedbackDelays=1:2; hiddenLayerSize=5;
net=narxnet(inputDelays,feedbackDelays,hiddenLayerSize,'open',trainFcn);
[x,xi,ai,t]=preparets(net,inputs,{},targets);
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ZaidiN
ZaidiN 2018-7-14
I have solved the problem using reshape and con2seq: That makes the input and target of same size!
u=X(200:500,:); y=T(200:500,:);
r1=length (u); c1=size(u,2); % Taking size of Input vector r2=length (y); c2=size(y,2); % Taking size of Target vector
u=reshape(u,c1,r1); %Making cell array of Input Matrix %u=num2cell(X,1); u=con2seq(u);
y=reshape(y,c2,r2); %Making cell array of Target matrix %y=num2cell(T,1); y=con2seq(y);

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回答（1 个）

Greg Heath
Greg Heath 2018-7-14
Come on ...
Error using preparets (line 105) Feedback and inputs have different numbers of timesteps
So why don't you EXPLICITLY calculate the sizes ???????????????????
inputsize = size(inputs)
targetsize = size(targets)
Thank you for EXPLICITLY accepting my answer!
Greg
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ZaidiN
ZaidiN 2018-7-14
编辑：ZaidiN 2018-7-14
Is it right to convert input of size (8461*53) to sequential vectors for narxnet training

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