MATLAB: How do i superimpose different MATLAB figures

MATLABsuperimpose

Hi, i have these MATLAB figures and will like to superimpose them as one figure. Is there a line of code to achieve that? They both have same y and x limits

Best Answer

No, there is no line of code to achieve that. Merging of figures takes a bunch of work because of all of the special cases about menus and toolbars and callbacks (and because the two figures might have been created with different MATLAB releases with different support for graphics objects.)

In the simple case where you are willing to flub all of that:

 first_fig = figure(1);
 second_fig = figure(2);
 first_ax = findobj(first_fig, 'type', 'axes');
 second_ax = findobj(second_fig, 'type', 'axes')
 if length(first_ax) ~= 1 || length(second_ax) ~= 1
    error('this code requires the two figures to have exactly one axes each');
 end
 ch2 = get(second_ax, 'children');     %direct children only and don't try to find the hidden ones
 copyobj(ch2, first_ax);         %beam them over

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MATLAB: Combine two MATLAB figures with two y axes

Try this code

fig1 = openfig('plot_1.fig');
fig2 = openfig('plot_2.fig');
ax1 = findobj(fig1, 'type', 'axes');
yyaxis(ax1, 'left');
line1L = ax1.Children;
yyaxis(ax1, 'right');
line1R = ax1.Children;
ax2 = findobj(fig2, 'type', 'axes');
yyaxis(ax2, 'left');
line2L = ax2.Children;
yyaxis(ax2, 'right');
line2R = ax2.Children;
%%
fig = figure;
ax = axes();
LineL = copyobj([line1L line2L], ax);
yyaxis(ax, 'right');
LineR = copyobj([line1R line2R], ax);

To change the ylimits you can do something like this

yyaxis(ax, 'left');
ax.YLim = [0 2]; % change Ylimits of left axes
yyaxis(ax, 'right');
ax.YLim = [0 2]; % change Ylimits of right axes

MATLAB: Plot two spectrum plot in one spectrum plot

Try this, using the two fig files you shared.

fig1 = openfig('Ichannel0_400_1.fig');
fig2 = openfig('Ichannel_400_1_800.fig');
ax1 = findobj(fig1, 'type', 'axes');
ax2 = findobj(fig2, 'type', 'axes');
l1 = findobj(fig1, 'type', 'line');
l2 = findobj(fig2, 'type', 'line');
l1.XData = [l1.XData l2.XData+l1.XData(end)];
l1.YData = [l1.YData l2.YData];
ax1.XLim = [min(l1.XData) max(l1.XData)];
figure(fig1);

Best Answer

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MATLAB: Combine two MATLAB figures with two y axes

MATLAB: Plot two spectrum plot in one spectrum plot

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