MATLAB: How to make a subplot into a new standalone figure

figurehandlessubplot

A colleague is giving me several fig files, each of which contains several subplots. What is the way that I can "copy" a subplot to a new standalone figure, including lines, x/y labels, and title? I would like to insert this in the following code, so I can automatically generate a figure for every subplot in the workspace.

% Make some fake figures
for iFig = 1:3
  for iSub = 1:4
    figure(iFig);
    subplot(2,2,iSub);
  end
end
% Get handles to all subplots
hAx = findobj('type', 'axes');
for iAx = 1:length(hAx)
  axes(hAx(iAx));
  % Do something here to generate a new figure containing 
  % lines/labels copied from this axis
end

Best Answer

You'll want to use copyobj.

This MathWorks' TS Answer might help get you started.

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MATLAB: How to superimpose plots from 2 (.fig) files

Hello Francis,

You were on the right track, but you only made one subplot. I'm assuming, since you're using subplot, that you want two separate axes on the figure. Here's a quick example of how you can do it with copyobj:

% Setup the figures
hFig1 = figure;
plot(1:10)
hold on
plot(2:20)
hFig2 = figure;
plot(10:-1:1)
hold on
plot(1:10)
% Create new figure and copy over
hFigTarget = figure;
hAxTar1 = subplot(2, 1, 1, 'Parent', hFigTarget);
hAxTar2 = subplot(2, 1, 2, 'Parent', hFigTarget);
hAx1 = hFig1.Children; % Assuming there's just one child
hAx2 = hFig2.Children;
copyobj(hAx1.Children, hAxTar1)
copyobj(hAx2.Children, hAxTar2)

Another way to do it would be to just copy over both axes, and change their 'Position' or 'OuterPosition' properties to simulate what subplot does. I personally find that this works pretty well to simulate subplots:

hAx1.Units = 'normalized';
hAx1.OuterPosition = [0 0.5 1 0.5];
hAx2.Units = 'normalized';
hAx2.OuterPosition = [0 0 1 0.5];

-Cam

MATLAB: Combine fig files into 1 figure

Run this code

fig(1) = openfig('SARIMA_forecast.fig'); % open figure


fig(2) = openfig('VAR_forecast.fig'); % open figure
fig(3) = openfig('VECM_forecast.fig'); % open figure
new_fig = figure;
ax_new = gobjects(size(fig));
for i=1:3
    ax = subplot(3,1,i);
    ax_old = findobj(fig(i), 'type', 'axes');
    ax_new(i) = copyobj(ax_old, new_fig);
    ax_new(i).YLimMode = 'manual';
    ax_new(i).Position = ax.Position;
    ax_new(i).Position(4) = ax_new(i).Position(4)-0.02;
    delete(ax);
end

Best Answer

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MATLAB: How to superimpose plots from 2 (.fig) files

MATLAB: Combine fig files into 1 figure

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