Hallo,

I am a beginner.
I wrote this file, but text and figure overlap, what is the problem? How can i solve it? thanks!

\begin{document}

\section{figura}

This should be the picture

\begin{figure}[!hbtp]
\psset{xunit=0.4mm,yunit=1.5mm}
\savedata{\questi}[{0,0},{100,25},{200,40},{300,50},{400,60}]
\dataplot[plotstyle=curve,showpoints=true]{\questi}
\psaxes[Dx=100,Dy=10]{->}(0,0)(0,0)(410,62)
\vspace{5mm}
\caption{This is the graph of $c(N)$}
\end{figure}

but it overlaps with the text!

\end{document}