이런 수직선 그래프는 어떻게 그려야 하나요...T.T - KTUG :: Q&A 마당

KTUG :: Q&A 마당

%!TEX program =xelatex

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\usepackage{fapapersize}

\usefapapersize{210mm,297mm,25mm,*,30mm,15mm}

\usepackage{tikz}

\usetikzlibrary{arrows}

\begin{document}

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% segment

\draw[<->] (0,1) -- (4.5,1) node [midway,fill=white] {$a$};

\draw[dashed] (0,.6) -- (0,1.4);

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% real line

\draw [->] (-6,0) -- (10,0);

% labelling

\def\y{1mm}

\foreach \x/\xtext in {0/$O$,1.5/$E$,4.5/$A$,7/$P$}

\draw (\x,-\y) -- (\x,\y) node [above] {\xtext};

\foreach \x/\xtext in {0,1.5/$1$,4.5/$a$,7/$x$,10/$\ell$}

\draw (\x,-\y) node [below] {\xtext};

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