why my training command is Showing error and not able to view my net

Hello All,

As i am new and persuing my research on Neural Network, in my intial stage am trying to code simple network of 2:4:1 architecture.

below is my code please check as i am not able to remove error for training and not able to view my net too.

please help that would be very needful as i have to present my work next week.

clc

g=load('sample file.txt');

P=g(1:1:63,1:2);

O=g(1:1:63,3);

net=network;

net.numInputs= 2;

net.numLayers= 2;

net.layers{1}.size= 4;

net.layers{2}.size= 1;

net.inputconnect(1,2)= 2;

net.IW{1,1};

net.LW{2,1};

net.b{1};

net.b{2};

net.layerConnect = [0 0; 1 0];

net.biasConnect = [1;1];

net.outputConnect = [0 1];

% Setup Division of Data for Training, Validation, Testing

%net.divideParam.trainRatio = 70/100;

%net.divideParam.valRatio = 15/100;

%net.divideParam.testRatio = 15/100;

net.divideFcn = 'dividerand';

% normalize the data {-1,+1};

[Pn,Ps] = mapminmax(P);

[On,Os] = mapminmax(O);

% Define transfer Function for each layer

net.layers{1}.transferFcn = 'purelin';

net.layers{2}.transferFcn = 'logsig';

net.performFcn = 'mse'; % Mean Squared Error

% train the network

%net =train(net,Pn,On);

net.trainFcn= 'trainlm';

% Train the Network

net.train = train(net,Pn,On);

% Test the Network

y = net(P);

e = gsubtract(O,y);

performance = perform(net,O,y);

% View the Network

net.view;