Multiple Boxplots on same figure

I have 3 sets of data that I am trying to display in 3 different boxplots on the same figure.

for example right now I have

A=[16 20 15 17 22 19 17]'
B=[22 15 16 16 16 18]'
C=[23 9 15 18 13 27 17 14 16 15 21 19 17]'

Other answered questions have the same about of data in each set where as I have 3 different sized sets of data.

I've tried using figure, and hold on but I still can't seem to format this correctly

Thank you

Answer 1

[the cyclist]

Here is one way:

A = [16 20 15 17 22 19 17]';
B = [22 15 16 16 16 18]';
C = [23 9 15 18 13 27 17 14 16 15 21 19 17]';

group = [    ones(size(A));
         2 * ones(size(B));
         3 * ones(size(C))];

figure
boxplot([A; B; C],group)
set(gca,'XTickLabel',{'A','B','C'})