In latex schaut es aber leider so aus:
\begin{document} \begin{tikzpicture}[ ] \begin{axis}[ xlabel=$t$, ylabel=$U_/cell}$, axis y line*=left, ] \addplot[color=green, select coords between index={1}{400}, filter discard warning=false, unbounded coords=discard ] table [x index=0, y index=2]{balancing.txt}; \end{axis} \begin{axis}[ xlabel=$t$, ylabel=$I(V_1)$, axis y line*=right, axis x line=none, ] \addplot[color=blue, select coords between index={1}{400}, filter discard warning=false, unbounded coords=discard ] table [x index=0, y index=2]{balancing.txt}; \end{axis} \end{tikzpicture} \end{document}