棒グラフ色々 Several bar graphs

Y = round(rand(5,3)*10);
subplot(2,2,1)
bar(Y,'grouped')
title 'Group'
subplot(2,2,2)
bar(Y,'stacked')
title 'Stack'
subplot(2,2,3)
barh(Y,'stacked')
title 'Stack'
subplot(2,2,4)
bar(Y,1.5)
title 'Width = 1.5'

matrixの上下の反転 Flip a matrix from up to bottom

使えそうなコードを見つけた・・・flipud
matrixをup & downと反転させる場合に使えそう。

function y = flipud(x)
%FLIPUD Flip matrix in up/down direction.
% FLIPUD(X) returns X with columns preserved and rows flipped
% in the up/down direction. For example,
%
% X = 1 4 becomes 3 6
% 2 5 2 5
% 3 6 1 4
%
% Class support for input X:
% float: double, single
%
% See also FLIPLR, ROT90, FLIPDIM.

% Copyright 1984-2004 The MathWorks, Inc.
% $Revision: 5.9.4.3 $ $Date: 2004/07/05 17:01:15 $

if ndims(x)~=2
error('MATLAB:flipud:SizeX', 'X must be a 2-D matrix.');
end
y = x(end:-1:1,:);

errorbar etc....

Matlab Centralを見ると、errorbarに関するコードが他にもこんなにあった。

http://www.mathworks.com/matlabcentral/fileexchange/27387-create-healthy-looking-error-bars

http://www.mathworks.com/matlabcentral/fileexchange/10803-barweb-bargraph-with-error-bars

http://www.mathworks.com/matlabcentral/fileexchange/27494

ってなわけで、これを試してみるべし。