MATLAB: Prevent figure frame from popping up

figureMATLAB

I am trying to prevent the figure from popping up at all (including the frame itself when initialized) and it is not working.
num = 0;
for n = 1:endblock
        fig = figure(n);
    for block = 1:endblock
        name = sprintf('Idx_%d',n);
        index = Sort.Sort.(name)(block).avg;
        num = num + size(Sort.Sort.(name)(block).block,2);
        tvec = 1:97;
        avg = cell2mat(index);
        set(fig, 'Visible', 'off');
        plot(tvec,avg,'Color',[1 0 1/block]);
        xlabel('Time (min)');
        ylabel('Mean Voltage (V)');
        title(['Idx' num2str(n)]);
        hold on
    end
    legend(['Blocks = ' num2str(endblock),' Waveforms = ' num2str(num)]);
    print(['Idx ' num2str(n)],'-dpng');
    num = 0;
end
end

Best Answer

You are turning off the visibilioty very late, until then the figure is already created. What you need to do is to turn it off at creation. They following code will turn off the visibility of all figures before at creation so they will not steal focus. And when the processing is done, the final for loop will turn on the visibility again
num = 0;
fig = cell(1, endblock);
for n = 1:endblock
  fig{n} = figure('Visible', 'off');
  for block = 1:endblock
      name = sprintf('Idx_%d',n);
      index = Sort.Sort.(name)(block).avg;
      num = num + size(Sort.Sort.(name)(block).block,2);
      tvec = 1:97;
      avg = cell2mat(index);
      plot(tvec,avg,'Color',[1 0 1/block]);
      xlabel('Time (min)');
      ylabel('Mean Voltage (V)');
      title(['Idx' num2str(n)]);
      hold on
  end
  legend(['Blocks = ' num2str(endblock),' Waveforms = ' num2str(num)]);
  print(['Idx ' num2str(n)],'-dpng');
  num = 0;
end
for i=1:length(fig)
  fig{i}.Visible = 'on';
end
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