Legend for tiled donut charts

I have a 2x3 tiled layout.

In the first row, I put three donut charts (one per each "cell"). The figure is attached.

What I want to do is to put a unique legend for them in the whole second row. I saw that this is possible for other types of charts and interesting options were suggested to other users. The main problem is that the properties for the legend of donut charts are very limited.

Suggestions?

Thank you!

Answer 1

[Voss]

Here's something that may help.

n = 3;
data = rand(10,n);

f = figure();
tl = tiledlayout(2,n);
d = gobjects(n,1);
for ii = 1:n
    nexttile(tl)
    d(ii) = donutchart(data(:,ii));
end

tl = tiledlayout(tl,1,1);
tl.Layout.Tile = n+1;
tl.Layout.TileSpan = [1,n];
ax = nexttile(tl);
ax.Visible = 'off';

c = d(1).ColorOrder;
nc = size(c,1);
nd = numel(d(1).Data);
c = repmat(c,ceil(nd/nc),1);

p = cellfun(@(x)patch(ax,NaN,NaN,x),num2cell(c(1:nd,:),2));
set(p,'FaceAlpha',d(1).FaceAlpha);
d(1).LabelsMode = 'manual';
d(1).Names = "slice "+(1:nd);
legend(p,d(1).Names,'Orientation','horizontal','NumColumns',ceil(nd/2));

Answer 2

[Andrea Costantino]

It helped a lot! Thank you very much!