Neural Networks-- train function error Indexing cannot yield multiple results.

I've used the nprtool to generate the script to train a neural network. I wanted to change the training algorithm from trainlm to conjugate gradient descent or something like that.

    % Solve a Pattern Recognition Problem with a Neural Network
   % Script generated by NPRTOOL 
   % Created Tue Nov 01 18:08:00 IST 2011
   %
   % This script assumes these variables are defined:
  %
  % train - input data.
  % train_labels - target data.
  clc;
  inputs = train';
  targets = train_labels';

% Create a Pattern Recognition Network
hiddenLayerSize = 60;
net = patternnet(hiddenLayerSize);

% Choose Input and Output Pre/Post-Processing Functions
% For a list of all processing functions type: help nnprocess
net.inputs{1}.processFcns = {'removeconstantrows','mapminmax'};
net.outputs{2}.processFcns = {'removeconstantrows','mapminmax'};

% Setup Division of Data for Training, Validation, Testing
% For a list of all data division functions type: help nndivide
net.divideFcn = 'dividerand'; % Divide data randomly
net.divideMode = 'sample'; % Divide up every sample
net.divideParam.trainRatio = 80/100;
net.divideParam.valRatio = 15/100;
net.divideParam.testRatio = 5/100;

% For help on training function 'trainlm' type: help trainlm
% For a list of all training functions type: help nntrain
net.trainFcn = 'trainlm'; % Levenberg-Marquardt

% Choose a Performance Function
% For a list of all performance functions type: help nnperformance
net.performFcn = 'mse'; % Mean squared error

% Choose Plot Functions
% For a list of all plot functions type: help nnplot
net.plotFcns = {'plotperform','plottrainstate','ploterrhist', ...
  'plotregression', 'plotfit'};

% Train the Network
[net,tr] = train(net,inputs,targets);

% Test the Network
outputs = net(inputs);
errors = gsubtract(targets,outputs);
performance = perform(net,targets,outputs)

% Recalculate Training, Validation and Test Performance
trainTargets = targets .* tr.trainMask{1};
valTargets = targets .* tr.valMask{1};
testTargets = targets .* tr.testMask{1};
trainPerformance = perform(net,trainTargets,outputs)
valPerformance = perform(net,valTargets,outputs)
testPerformance = perform(net,testTargets,outputs)

% View the Network
view(net)

% Plots
% Uncomment these lines to enable various plots.
%figure, plotperform(tr)
%figure, plottrainstate(tr)
%figure, plotconfusion(targets,outputs)
%figure, ploterrhist(errors)

When I run this code, I get the error,

??? Indexing cannot yield multiple results.

Error in ==> untitled2 at 46
[net,tr] = train(net,inputs,targets);

Can you please help me out with this?

Thanks

Answer 1

[Greg Heath]

Cannot use train as a filename or variable.

Hope this helps.

Greg