why inputs and targets have diffrent sampels?

why do i get this error? iam trying to train a neural network.80%of my data is training data and the rest is test.

Error using network/train (line 340)

Inputs and targets have different numbers of samples.

Error in Untitled3 (line 20)

net= train(net,set',t');

this is my code.

clc
clear all
close all
filename='FIFA2.xlsx';
A =xlsread(filename);
[m,n]=size(A);
T=A(:,1);
data=A(:,(2:end));
[m,n]=size(A);
rows=int32(floor(0.8 * m));
set=A(1:rows,:);
testset=A(rows+1:end,2:n);
t=set(1:rows);
t_test=testset(rows:end);
net= newff(set',t');

y=sim(net,set');

% net.trainParam.epoch=20;
net= train(net,set',t');
y=sim(net,set');

hardlims(y);

Answer 1

[Greg Heath]

For I-dimensional "I"nputs and O-dimensional "O"utput targets

After reading in inputs and targets

ALWAYS CHECK THE DIMENSIONS !!!

[ I Ni ] = size(input)

[ O Nt ] = size(target)

if Nt == Ni

N = Ni

else

error

end

Hope this helps

Thank you for formally accepting my answer

Greg