Within a plot, how can I create an inset containing multiple subplots using subtightplot?

If I use the built-in suplot function, it works:

% Main plot
x = linspace(0, 10, 100);
plot(x, sin(x), 'LineWidth', 1.5);
xlabel('X'); ylabel('Y');

% Inset made of subplots
hp = uipanel('Parent', gcf, 'Position', [0.6 0.6 0.3 0.3]);
for i = 1:4
    ax = subplot(2, 2, i, 'Parent', hp);
    plot(ax, x, sin(i*x), 'r');
end

However, if I try to use the subtightplot function it does not work:

% Main plot
x = linspace(0, 10, 100);
plot(x, sin(x), 'LineWidth', 1.5);

Warning: Graphics acceleration hardware is unavailable. Graphics quality and performance might be diminished. See MATLAB System Requirements.

xlabel('X'); ylabel('Y');

% Inset made of subplots
hp = uipanel('Parent', gcf, 'Position', [0.6 0.6 0.3 0.3]);

subplot = @(m,n,p) subtightplot(m, n, p, [0.05 0.05], [0.05 0.05], [0.05 0.05]);

for i = 1:4
    ax = subplot(2, 2, i);   
    ax.Parent = hp;         
    plot(ax, x, sin(i*x), 'r');
end

Unrecognized function or variable 'subtightplot'.

Error in solution>@(m,n,p)subtightplot(m,n,p,[0.05,0.05],[0.05,0.05],[0.05,0.05]) (line 19)
subplot = @(m,n,p) subtightplot(m, n, p, [0.05 0.05], [0.05 0.05], [0.05 0.05]);

Answer 1

[Sim]

Thanks a lot @Star Strider! :-)

I tried to have another go, and I might have found a potential solution, even if not elegant.... The idea is the following: It appears that subtightplot deletes any overlapping axes in the figure it runs in, which would wipe out the main plot created above. So I built the "subplots grid" in a separate, hidden figure instead, then moved each axis over to the main figure afterward and rescaled it to fit inside inset_box... I hope this is not a too weak solution...

addpath('/.../subtightplot');

% Main plot
fig = figure;
x = linspace(0, 10, 100);
plot(x, sin(x), 'LineWidth', 1.5);
xlabel('X'); ylabel('Y');

% Inset made of subplots
fig_temp = figure('Visible', 'off', 'Position', [100 100 300 300]);
inset_box = [0.6 0.6 0.3 0.3];
subplot_fan = @(m,n,p) subtightplot(m, n, p, [0.05 0.05], [0.05 0.05], [0.05 0.05]);
for i = 1:4
    ax = subplot_fan(2, 2, i);     % create axis inside "fig_temp"
    pos_full = ax.Position;        % its position normalized to "fig_temp"
    ax.Parent = fig;               % re-parent onto the main figure
    ax.Position = [inset_box(1) + pos_full(1)*inset_box(3), ...
                   inset_box(2) + pos_full(2)*inset_box(4), ...
                   pos_full(3)*inset_box(3), ...
                   pos_full(4)*inset_box(4)];  % re-map into "inset_box" coordinates
    plot(ax, x, sin(i*x), 'r');
end
close(fig_temp);                   % temp figure no longer needed
figure(fig);                       % bring focus back to the main figure