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%% Plot the demonstration image and its histogram.
%
%% Copyright (C) 2019-2021 Mohammad Akhlaghi <mohammad@akhlaghi.org>
%
%% This file is free software: you can redistribute it and/or modify it
%% under the terms of the GNU General Public License as published by the
%% Free Software Foundation, either version 3 of the License, or (at your
%% option) any later version.
%
%% This file is distributed in the hope that it will be useful, but WITHOUT
%% ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
%% FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
%% for more details.
%
%% You should have received a copy of the GNU General Public License along
%% with this file. If not, see <http://www.gnu.org/licenses/>.
\begin{tikzpicture}
%% Dispaly the demo image.
\node[anchor=south west] (img) at (0,0)
{\includegraphics[width=0.5\linewidth]
{tex/build/image-histogram/wfpc2.pdf}};
%% Its label
\node[anchor=south west] at (0.45\linewidth,0.45\linewidth)
{\textcolor{white}{a}};
%% This histogram.
\begin{axis}[at={(0.52\linewidth,0.1\linewidth)},
no markers,
axis on top,
xmode=normal,
ymode=normal,
yticklabels={},
scale only axis,
xlabel=Pixel value,
width=0.5\linewidth,
height=0.412\linewidth,
enlarge y limits=false,
enlarge x limits=false,
]
\addplot [const plot mark mid, fill=red]
table [x index=0, y index=1]
{tex/build/to-publish/wfpc2-histogram.txt}
\closedcycle;
\end{axis}
%% The histogram's label
\node[anchor=south west] at (0.95\linewidth,0.45\linewidth) {b};
\end{tikzpicture}
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