Self Organizing Map (SOM) plot interval saving process

Question

ChoHwan Oh 2020-4-27

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https://ww2.mathworks.cn/matlabcentral/answers/520952-self-organizing-map-som-plot-interval-saving-process

回答： Srivardhan Gadila 2020-5-3

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I want to save the figure of SOM (ex:plotsompos) according to the iteration(or epoch).

My code is written in below, and I want to save the plotsompos according to the epoch (at epoch 100, 200, 300, 400).

However, I don't know the way, and downward code just give the plotsompos at epoch 1000.

Is there any way to save the figure according to the epoch?

net = selforgmap([dimension1,dimension2]);
net.trainParam.epochs = 1000;
[net,tr] = train(net,X3);
figure(); plotsompos(net,X3); title('whole')

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Answer 1

Srivardhan Gadila 2020-5-3

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https://ww2.mathworks.cn/matlabcentral/answers/520952-self-organizing-map-som-plot-interval-saving-process#answer_429918

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From the documentation of selforgmap, Neural Network Object Properties & Neural Network Subobject Properties I cannot find any inbuilt method to plot and save in between epochs. As a workaround you can write a for loop to get the plots at required intervals as follows:

net = selforgmap([dimension1,dimension2]);
net.trainParam.epochs = 100;
for i=1:10
    [net,tr] = train(net,X3);
    figure(); plotsompos(net,X3); title("plot after "+num2str(i*100)+" epochs")
end