MATLAB: Combine two MATLAB figures with two y axes

combine two matlab figures with two y axes

Hi. I have two MATLAB figures and I want to combine them together, meaning to show them on one plot. These two figures have two y-axes. Unfortunately, the code I am using combines only the figures based on the right Y-axes. Can someone help me with this. I am attaching the fig files.
Dir = 'D:\Original_Plots\';
prefix1='plot_1';
prefix2='plot_2';
BinSuffix={''}; % Text_followed by number ID
% Load figures
for j = 1:1:length(BinSuffix)
    h1(j) = openfig([Dir prefix1 BinSuffix{j} '.fig'],'reuse');
    ax1(j) = gca;
    h1(j)
end
for j = 1:1:length(BinSuffix)
    h2(j) = openfig([Dir prefix2 BinSuffix{j} '.fig'],'reuse');
    ax2(j) = gca;
end
% Combine figures
for j = 1:1:length(BinSuffix)
    hf = figure(20);
    hold on;
    fig1 = get(ax1(j),'children');
    fig2 = get(ax2(j),'children');
    
    s = gca;
    copyobj(fig1,s);
    copyobj(fig2,s);
    
end
% AXES LABELS
xlabel('x1,x2');hold on;
ylabel('y1'); % on left axis
hold on;
ylabel('y2'); % on right axis
savefig('2_plots');

Best Answer

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
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