MATLAB: Having a problem training & Testing the Neural network

Question

I have a group of images in a folder and i would like to train the neural network using the features extracted using the gray co-occurrence matrix.

function neuralNetwork(img)
%NN Summary of this function goes here
%   Detailed explanation goes here
files = dir('*.png');
hist = [];
net = lvqnet(10);
for n = 1 : length(files)
    file = imread(files(n).name);
      [rows columns numberOfColorChannels] = size(file);
      %%Check if the im loaded is a grayscale image
      if numberOfColorChannels > 1
          %%Coverting to grayscale & get the co-occurrence matrix
          F = graycomatrix(rgb2gray(file));
      else
          F= graycomatrix(file); %get co-occurrence matrix
      end
      hist = [hist, imhist(F)]; %#ok
end
% Create a Self-Organizing Map
dimension1 = 10;
dimension2 = 10; 
net = selforgmap([dimension1 dimension2]);
% Train the Network
[net,tr] = train(net,hist); % The error is here
% Test the Network
outputs = net(hist);
% View the Network
view(net)

I am getting the following error:

>> neuralNetwork('C:\Users\Lameck\Documents\MATLAB\Project\TrainingSet\0001.png');
??? Error using ==> mtimes
Inner matrix dimensions must agree.
Error in ==> learnsomb>apply at 122
  a2 =  neighborhood * a + a;
Error in ==> trainbu>train_network at 206
            [dw,IWLS{i,j}] = fcn.apply(net.IW{i,j}, ...
Error in ==> trainbu at 103
  [net,tr] = train_network(net,tr,data,fcns,param);
Error in ==> network.train at 107
[net,tr] = feval(net.trainFcn,net,X,T,Xi,Ai,EW,net.trainParam);
Error in ==> neuralNetwork at 26
som = train(som, hist);

Answer 1

train takes 3 inputs, not 2.

 help train
 doc train

Hope this helps.

Thank you for formally accepting my answer

Greg