\documentclass[a4paper]{article} %% Language and font encodings \usepackage[english]{babel} \usepackage[utf8x]{inputenc} \usepackage[T1]{fontenc} %% Sets page size and margins \usepackage[a4paper,top=3cm,bottom=2cm,left=3cm,right=3cm,marginparwidth=1.75cm]{geometry} %% Useful packages \usepackage{amsmath} \usepackage{graphicx} \usepackage{pgfplots} \pgfplotsset{width=7cm,compat=1.3} \begin{document} \begin{tikzpicture} \begin{axis}[legend pos=south west] \addplot coordinates {(0,0) (1,1)}; \addplot coordinates {(0,1) (1,2)}; \addplot coordinates {(0,2) (1,3)}; \legend{$l_1$,$l_2$,$l_3$} \end{axis} \end{tikzpicture} \end{document}
Jemand eine Idee? Vielen Dank