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added more CSV / function plotting examples

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Martin Thoma 2013-05-11 14:05:37 +02:00
parent 530ba6bb87
commit d76640d4ea
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tikz/2d-parted-function/2d-parted-function.tex Normal file
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\documentclass[varwidth=true, border=2pt]{standalone}
\usepackage{pgfplots}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
legend pos=south west,
axis x line=middle,
axis y line=middle,
grid = major,
%width=9cm,
%height=4.5cm,
grid style={dashed, gray!30},
xmin=-1, % start the diagram at this x-coordinate
xmax= 6, % end the diagram at this x-coordinate
ymin=-0.25, % start the diagram at this y-coordinate
ymax= 2.25, % end the diagram at this y-coordinate
axis background/.style={fill=white},
xlabel=x,
ylabel=y,
%xticklabels={-2,-1.6,...,7},
%yticklabels={-8,-7,...,8},
tick align=outside,
minor tick num=-3,
enlargelimits=true,
tension=0.08]
% plot the stirling-formulae
\addplot[domain=0:1, red, thick,samples=20] {0.5*x*x};
\addplot[domain=1:2, green, thick,samples=20] {x-0.5};
\addplot[domain=2:3, blue, thick,samples=500] {-0.5*(x-2)*(x-2)+x-0.5};
\addplot[domain=3:5, purple, thick,samples=20] {5-x};
\addplot[domain=5:7, orange, thick,samples=3] {0};
\addplot[domain=-3:0, orange, thick,samples=3] {0};
%\addlegendentry{$f_1(x)=\frac{1}{2}x^2$}
%\addlegendentry{$f_2(x)=x-\frac{1}{2}$}
%\addlegendentry{$f_2(x)=-\frac{1}{2} (x-2)^2+x-\frac{1}{2}$}
\end{axis}
\end{tikzpicture}
\end{document}