% This file was created by matlab2tikz v0.2.2.
% Copyright (c) 2008--2012, Nico Schlömer <nico.schloemer@gmail.com>
% All rights reserved.
% 
% The latest updates can be retrieved from
%   http://www.mathworks.com/matlabcentral/fileexchange/22022-matlab2tikz
% where you can also make suggestions and rate matlab2tikz.
% 
% 
% 
\begin{tikzpicture}

\begin{axis}[%
view={0}{90},
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0, xmax=5,
xtick={1,2,3,4},
xlabel={$\alpha$},
xmajorgrids,
ymin=0, ymax=60,
ylabel={GFlops},
ymajorgrids,
legend style={at={(0.03,0.97)},anchor=north west,nodes=right},
area legend]
\addplot[ybar,bar width=0.0457142857142857\figurewidth,bar shift=-0.0285714285714286\figurewidth,fill=black,draw=black] plot coordinates{ (1,28.1201594459724) (2,39.4770078207878) (3,46.729267222466) (4,51.1805955922042) };

\addlegendentry{single};

\addplot [
color=black,
solid,
line width=1.0pt,
forget plot
]
coordinates{
 (0,0)(5,0) 
};
\addplot[ybar,bar width=0.0457142857142857\figurewidth,bar shift=0.0285714285714286\figurewidth,fill=white,draw=black] plot coordinates{ (1,23.1502349076266) (2,30.1314172888447) (3,34.692005269148) (4,37.5952271684259) };

\addlegendentry{double};

\end{axis}
\end{tikzpicture}%