error using subsindex

I have a code for rbf neural network but i get error when processing

xdata=[12 25 1 5 ;8 9 21 03  ]
ydata-[2 6 9 8 ;2  8 7 4 ]
training=xdata(:,1:2);test=xdata(:,3:4);

samplesize=size(xdata);
    for i=1:3
      c=cvpartition(samplesize,'kfold',2)

          trainInd=find(training(c,i));
          testInd=find(test(c,i));
          trainXMat=xdata(xdata(trainInd));
          tstXMat=xdata((xdata(testInd)));
          trainYMat=ydata(ydata(trainInd));
          tstYMat=ydata((ydata(testInd)));
  net1=newrbe(xdata,ydata,1.0);
        end

is these correct,i get error as

Error using subsindex Function 'subsindex' is not defined for values of class 'cvpartition'.

Error in yasrbf (line 10) trainInd=find(training(c,i));

please help

Answer 1

[Walter Roberson]

cvpartition() creates a "cvpartition object", not a numeric value, but you are trying to use that object as an index in to the array training() .

I suggest you refer to http://www.mathworks.com/help/toolbox/stats/cvpartitionclass.html

Perhaps what you want is

trainInd = find(c.training(i));

or something like that.

[kash]

thanks walter it works but one thing is

CorrectRate: NaN

ErrorRate: NaN

i inculded

cp = classperf(groups);

cp = classperf(cp, tstYMat, testInd )

please help

[Walter Roberson]

Sorry, that is outside my experience.

[kash]

ok walter thanks for ur suggestion

[kash]

another walter in another post

http://www.mathworks.in/matlabcentral/answers/34714-send-request-packet

ur code returns error

please help