# Plotted Set of Data

Plot of the data set $\mathcal{D}$ which will be used throughout the cubic spline interpolation article except for the example section, defined as $\mathcal{D}=\left\{ \left(-1.5,-1.2\right),\left(-.2,0\right),\left(1,.5\right),\left(5,1\right),\left(10,1.2\right),\left(15,2\right),\left(20,1\right)\right\}$

**LaTeX source**

\documentclass[11pt]{article} % graphics \usepackage{tikz} \usepackage{pgfplots} \pgfplotsset{compat=1.12} \usepgfplotslibrary{fillbetween} \begin{document} \begin{tikzpicture} \pgfplotsset{ scale only axis, } \begin{axis}[ xlabel=$x$, ylabel=$y$, samples=100, ]\addplot [only marks] table { -1.5 -1.2 -.2 0 1 0.5 5 1 10 1.2 15 2 20 1 }; \end{axis} \end{tikzpicture} \end{document}