How do I group boxplots by modifying the X locations?

Is there a way to set the 'X' coordinates of several boxplots?

For instance something similar to...

X = [1.2 1.8 3.2 3.8 5.2 5.8];
boxplot(X, Y)

so that it would look like groups of boxplots are set closer together?

Answer 1

[Patrick Kalita]

Perhaps you are looking for the positions option?

X = [1.2 1.8 3.2 3.8 5.2 5.8];
Y = rand(100, 6);
boxplot(Y, 'positions', X, 'labels', X)

[Matt Tearle]

how the heck did I not know about that? ::headdesk::

Answer 2

[Matt Tearle]

You can cluster groups together using the 'factorgap' option. Would that do what you want?

% make some fake data
x = rand(200,1);
z = bsxfun(@plus,repmat(x,1,5),-0.1:0.1:0.3);
% standard boxplot
boxplot(z)
% make some grouping labels
g1 = repmat([1 1 1 2 2],200,1);
g2 = repmat('abcab',200,1);
% reshape everything into columns
zv = z(:);
gp1 = g1(:);
gp2 = g2(:);
% boxplot with groupings grouped!
boxplot(zv,{gp1,gp2},'factorgap',[50,0])

[Paulo Silva]

Is there something you can't solve with matlab? :)

[Matt Tearle]

Apparently:

>> worldpeace

??? Undefined function or variable 'worldpeace'.

[Aamir Ansari]

We can try!!

Answer 3

[Ian]

Yes, the 'positions' one is what i was looking for. Thanks for the responses.