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I am trying to configure a neural network using matlab and newff command.

After that, I am trying to visualize my created configuration using the view command.

x = view(net);

How can I save the displayed window to a .png file? I have tried with saveas(x, 'figure.png', 'png') but it won't work? Do you know how can I do that from code?

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2 Answers

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The created window is a pure Java figure (not MATLAB Handle Graphics). Try this to capture it:

%# neural net, and view it
net = feedforwardnet(5);
jframe = view(net);

%# create it in a MATLAB figure
hFig = figure('Menubar','none', 'Position',[100 100 565 166]);
jpanel = get(jframe,'ContentPane');
[~,h] = javacomponent(jpanel);
set(h, 'units','normalized', 'position',[0 0 1 1])

%# close java window
jframe.setVisible(false);
jframe.dispose();

%# print to file
set(hFig, 'PaperPositionMode', 'auto')
saveas(hFig, 'out.png')

%# close figure
close(hFig)
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I also have the same problem, specially when i try to save the Neural network toolbox (nntraintool) generated plots. I use snipping tools to capture those plots. However, please try to use the following one:

Identify the gfx object you need to snap-shoot (its handle). It will come from identifiable properties. Then you can use print option to save it to a file; you need to write the file name, the type; go to this link for more info (http://www.mathworks.com/help/matlab/ref/print.html).

For example, if you want to save the figure with the tag 'performance.fig', you may try:

h = findobj('Type', 'figure', 'tag', 'performance.fig');

    for k = 1:numel(h)

    print(h(k), sprintf('Pic%d.ps',k));

    end;

let me know if this helps, You have to modify codes up to your need. I also got this help from another person in this stackoverflow forum.

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this will not work (neither findobj or allchild(0) will find the window in question) – Amro Apr 23 at 9:01
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