LaTeX Forum

\documentclass{scrartcl} 

\usepackage[ngerman]{babel}
\usepackage[latin1]{inputenc}


\usepackage{pgfplots}

\usepackage{tikz} 






\begin{document} 

\pgfkeys{/pgf/number format/.cd ,use comma ,set thousands separator={ }} % Zahlen in pgfplots werden über die pgf Engine gesetzt. Siehe Doku zu pgfplotstable
\pgfplotsset{ every axis label/.append style={font=\scriptsize}, %
every tick label/.append style={font=\scriptsize}} % globale Einstellungen. 


\begin{tikzpicture} 

\begin{axis}[ylabel style={ at={(0.17,1.1)} } ,% 
xlabel style={at={(1.1,0.14)}} ,% 
xlabel={$x$ in m}, ylabel={$t$ in s}, domain=0:2.5, axis x line=bottom, axis y line=left, xtick={0.25, 0.5,...,2.25}] 
\addplot[mark=none] {x}; 
\end{axis} 

\end{tikzpicture}

\end{document}

\documentclass[11pt,a4paper]{scrartcl}
\usepackage[latin1]{inputenc}

\usepackage{tikz}
\usepackage{pgfplots}

\usepackage{siunitx}
	\sisetup{
			output-decimal-marker = {,}
		}

\begin{document}
So haette ich es gerne:

\begin{tikzpicture}[x=3cm, y=2cm]
% x-Achse
\draw [->] (0,0) -- (2.5,0) node [right] {\scriptsize$x$ in m};
\foreach \x in {0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.25} 
   \draw (\x, -2pt)--(\x, 2pt) node[below=4pt]{\num{\x}};
% y-Achse
\draw [->] (0,0) -- (0,2.5) node [left] {\scriptsize$t$ in s};
\foreach \y in {1,2} 
   \draw (-2pt,\y)--(2pt,\y) node[left=4pt]{\num{\y}};

\draw[smooth,samples=500,domain=0:2] plot(\x,\x); 
\end{tikzpicture}

So ist es mit den Standardeinstellungen:

\begin{tikzpicture}

\begin{axis}[xlabel={$x$ in m}, ylabel={$t$ in s}, domain=0:2.5]
\addplot[mark=none] {x};
\end{axis}

\end{tikzpicture}
\end{document}