tikz, \addplot with equation, discrete steps

Question

I would like to change the discretization tikz uses in order to get a smoother graph.

 \documentclass[article]{standalone}

 \usepackage{tikz}
 \usepackage{pgfplots}
 \pgfplotsset{compat = newest}  % loads newest improved settings

\begin{document}

\begin{tikzpicture}

\begin{axis}[scale only axis, xlabel = x, xmin = 0, xmax = 4, ylabel = y,  ymax = 40, ymin = 0, ytick pos=left]



\addplot [black, domain=0:3.5] {25*x^0.2};

 \end{axis}
 \end{tikzpicture}
 \end{document}

@Dr.ManuelKuehner, thank you, works perfectly! I use samples=1000, with samples=100 I still get a little kink. @zarko, thank you! smooth doesn`t work for me, still a kink. — Sophie, Nov 06 '17 at 14:53
You can accept my answer if your problem is solved. This way the process comes to an end. — Dr. Manuel Kuehner, Nov 08 '17 at 19:47

score 7 · Accepted Answer · answered Nov 06 '17 at 15:55

7

Comment2Answer :)

\addplot [black, domain=0:3.5, samples=100] {25*x^0.2};

The samples option of the \addplot command defines the number of supporting points (German Stützstellen).

answered Nov 06 '17 at 15:55

Dr. Manuel Kuehner

22,451

tikz, \addplot with equation, discrete steps

1 Answers1