How do I group boxplots by modifying the X locations?

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Ian
Ian 2011-2-18
评论： Aamir Ansari 2021-8-2
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?

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采纳的回答

Patrick Kalita
Patrick Kalita 2011-2-18
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)

更多回答（2 个）

Matt Tearle
Matt Tearle 2011-2-18
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])
Ian
Ian 2011-2-18
Yes, the 'positions' one is what i was looking for. Thanks for the responses.

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