NARX - 2hr Prediction of Cargo Temperature on transit

Hi Everyone,

NARX - 2hr Prediction of Cargo Temperature on transit

Pls help me out. I have experimental data for cargo temperature that I want to predict and visualize them as in a plotted graph form and have a model that will produce such when feed with different data at any point. I am struggling. I need your help

This is my code

clc clear all %% Data Import % % borderdelaysinputs - input time series. % borderdelaysoutputs_5_4tiers - feedback time series. load 'C:\Users\modelling\borderdelaysdata_5_4tiers' X = tonndata(borderdelaysinputs,false,false); T = tonndata(borderdelaysoutputs_5_4tiers,false,false);

%% Training Function trainFcn = 'trainlm'; % Levenberg-Marquardt

% Create a Nonlinear Autoregressive Network with External Input inputDelays = 1:2; feedbackDelays = 1:2; hiddenLayerSize = 10; net = narxnet(inputDelays,feedbackDelays,hiddenLayerSize,'open',trainFcn);

% Prepare the Data for Training and Simulation

[x,xi,ai,t] = preparets(net,X,{},T);

% Setup Division of Data for Training, Validation, Testing net.divideParam.trainRatio = 70/100; net.divideParam.valRatio = 15/100; net.divideParam.testRatio = 15/100;

% Train the Network [net,tr] = train(net,x,t,xi,ai);

% Test the Network y = net(x,xi,ai); e = gsubtract(t,y); performance = perform(net,t,y)

% View the Network view(net)

%% Plots % Uncomment these lines to enable various plots. %figure, plotperform(tr) %figure, plottrainstate(tr) %figure, plotregression(t,y) %figure, plotresponse(t,y) %figure, ploterrcorr(e) %figure, plotinerrcorr(x,e)

% Closed Loop Network netc = closeloop(net); netc.name = [net.name ' - Closed Loop']; view(netc) [xc,xic,aic,tc] = preparets(netc,X,{},T); yc = netc(xc,xic,aic); closedLoopPerformance = perform(netc,tc,yc)

% Step-Ahead Prediction Network nets = removedelay(net); nets.name = [net.name ' - Predict One Step Ahead']; view(nets) [xs,xis,ais,ts] = preparets(nets,X,{},T); ys = nets(xs,xis,ais); stepAheadPerformance = perform(nets,ts,ys)

I have not been able to plot the graph neither generate a model. How can I go about it?

Thank you for your assistance

Answer 1

[Greg Heath]

1. I DO NOT RECOMMEND TRYING TO USE THE REMOVEDELAY COMMAND. As far as I am concerned, it is useless.

2. If you want help

a. See some of my posts (especially the tutorials). Search in both the NEWSGROUP and ANSWERS with

NARXNET GREG

b. Apply your code to MATLAB data 
   help nndata
   doc nndata

c. Include FORMATTED CODE and ERROR MESSAGES in your post.

Hope this helps.

Greg