Hi, I am working on a set of code implying the ANN. My end purpose is to plot a comparison graph between actual output and simulated output. However, there isn't any points displayed in my plot. What is the correct syntax?

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Shay Ang 2018-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/436252-hi-i-am-working-on-a-set-of-code-implying-the-ann-my-end-purpose-is-to-plot-a-comparison-graph-bet

评论： Greg Heath 2018-12-21

A=data(:,2)
R1=data(:,5)
TA=A' % Transpose the Input and Output data from column to row matrix
TR1=R1'
[NA,PS]=mapminmax(TA) %Normalize the transposed input and output data 
[NR1,TS]=mapminmax(TR1)
for i=1:20;
net = feedforwardnet(i,'trainlm');
net.trainParam.show = 50;
net.trainParam.lr = 0.05;
net.trainParam.epochs = 300;
net.trainParam.goal = 1e-5;
[net,tr] = train(net,NA,NR1);
[trainInd,valInd,testInd] = dividerand(20,0.7,0.15,0.15); %Divide data randomly
Y=sim(net,NA)
TY=mapminmax('reverse',Y,TS); %Denormalize simulated data 
plot(i,TR1,'red',i,TY,'blue') % Plot comparison graph of experimental output data and simulated data
title('Graph of Comparison between Experimental Output Data and Simulated Data')
xlabel('Experimental Input Data')
ylabel('Experimental Output Data and Simulated Data')
legend('Experimental Output Data','Simulated Data')
end

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Greg Heath 2018-12-21

The dividerand statement makes no sense.

It is not used for training
.If it were used it would yield a random mixture of trn, val and tst data

OR am I missing something ?

Greg

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Answer 1

madhan ravi 2018-12-18

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编辑：madhan ravi 2018-12-18

在 MATLAB Online 中打开

However, there isn't any points displayed in my plot. What is the correct syntax?

https://in.mathworks.com/help/matlab/ref/linespec.html

plot(i,TR1,'-or',i,TY,'-ob') % add 'o' as marker to view the data points

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Shay Ang 2018-12-21

Thank you for the help. My plot is showing now, however, the points are all accumulated at the 20th x value only. How do i make the points plotted on each x value? (from 1 to 20)