error using classperf in newrbf

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FIR
FIR 2012-4-16
I have a code
data=[0.5 .3 0.6 0.5;0.2 0.3 0.5 0.9;0.1 0.7 0.2 0.8;0.5 .3 0.6 0.5;0.2 0.3 0.5 0.9;0.1 0.7 0.2 0.8]
P=data(1:3,1:2);
T=data(1:3,3);
a=data(4:6,1:2);
s=data(4:6,3);
groups=[0;1;1;0;1;1]
groups = cellstr(num2str(groups))
cvFolds = crossvalind('kfold', groups, 10); %# get indices of 10-fold CV %# get indices of 10-fold CV
cp = classperf(groups);
for i = 1:10
net = newrb(P',T',0,3,12,1);
Y=sim(net,a')
d=[Y' s]
cp = classperf(cp, d)
end
I get an error as
Error using classperf (line 244)
When class labels of the CP object is a cell array of strings and
the classifier output is a numeric array, it must contain valid
indices of the class labels or NaNs for inconclusive results.
please help

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