How can I keep figures invisible when going between different figures and different subplots?

Question

Jennifer Davies 2016-10-26

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评论： Jennifer Davies 2017-3-28

Hi I have a script with three figures (f1, f2, and f3) that are invisible to the user, each with four subplots (sp1, sp2, sp3 and sp4). I need to call these figures at various times in the script to plot data. E.g., I first plot on f1-sp1, then on f2-sp1, and f3-sp1. In the next iteration of the loop I plot on f1=sp2, f2-sp2, f3-sp2, etc... Is anyone please able to tell me how to do this without making the figures visible? For each figure I can assign handles to the subplots with the following code,

for sp=1:4
    ax(sp)=subplot(2,2,sp);
end

and then with the current figure I can move around the subplots using

subplot(ax(2))

I can do this for each figure, i.e., end up with ax1, ax2 and ax3, but using these in the codes only seems to move within the current figure. E.g.,

subplot(ax2(4))

will make subplot 4 of the current figure active, but will not necessarily make subplot 4 of figure 2 active. If I make figure 2 current using

figure(2)

then it becomes visible.

Can anyone help me with how to make a specific subplot of a specific figure current, without making the figure visible?

Thanks very much Jen

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Answer 1

Thorsten 2016-10-26

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Don't use

figure(2)

but

set(0, 'CurrentFigure', f(2))

where f(2) is the handle of figure 2, obtained with gcf when figure 2 is active, or returned by figure when the figure is created.

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Jennifer Davies 2016-10-26

Thank you!

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Answer 2

Adam 2016-10-26

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hFigs(1) = figure(1);
for sp=1:4
    ax(sp)=subplot(2,2,sp, 'Parent', hFigs(1));
end
hFigs(2) = figure(2);
for sp=1:4
    ax(sp+4)=subplot(2,2,sp, 'Parent', hFigs(2));
end

Something like that would work better. I wouldn't store my axes indexed quite like that probably because a hard-coded +4 is ugly and it depends where your code is fitting with respect to each other as to exactly how I would do it, but the main point is to explicitly give your subplot axes a parent figure.

Relying on making something the current figure and then using the default subplot instruction is never a good idea.

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Jennifer Davies 2016-10-26

Ok great, I will try this now. Thank you

Jennifer Davies 2017-3-28

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Hi Adam I'm trying again with this code and wondered if you're able to see where I'm going wrong? I'm creating two figures, each with six subplots, using the following code:

for fig=1:2
    figure('papertype','A4','paperorientation','portrait','Visible','Off')
    for sp=1:6
        ax{fig,sp}=subplot(3,2,sp,'parent',fig);
    end
end