Graphics, Figures & Tables ⇒ Symbolic axis values - strange sequence

[Gennaro90]

Hello everyone, I tried to get symbolic values x1, x2, x3, x4 on x axis and C(x1),...,C(x4) on y axis.

Code: Select all

\begin{tikzpicture}
    \begin{axis}[
        xlabel={$x$},
        ylabel={$y$},
        axis lines=center,
        symbolic x coords={$x_1$, $x_2$, $x_3$, $x_4$, $x_5$},
        symbolic y coords={$C(x_1)$, $C(x_2)$, $C(x_3),                
        $C(x_4)$, $C(x_5)$}]
    \end{axis}
\end{tikzpicture}

but the result is not right because x1 and C(x1) occur on 2 ticks, x2 and C(x2) on 3 ticks. How can I get the right plot?

Thank you very much for your time.

[Stefan Kottwitz]

Hi Gennaro,

welcome to the forum!

With symbolic coordinates, a question may be, what is the x range, the y range, the placement. It may be undefined here, what may explain that labels are randomly chosen. Interesting anyway. What is missing though, is ytick=data and ytick=data.

But here is a working solution for you. I take normal coordinates, but symbolic labels, that gives a good picture and using these coordinates you can eve choose fine positions for labels or between symbolic values.

Code: Select all

\documentclass[border=10pt]{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
  \begin{axis}[
      xlabel      = {$x$},
      ylabel      = {$y$},
      xmin        = 0,
      xmax        = 5.5,
      ymin        = 0,
      ymax        = 5.5,
      domain      = -1:5
      y domain    = -1:5,
      axis lines  = center,
      xtick       = { 1,2,3,4,5 },
      ytick       = { 1,2,3,4,5 },
      xticklabels = { $x_1$, $x_2$, $x_3$, $x_4$, $x_5$ },
      yticklabels = { $C(x_1)$, $C(x_2)$, $C(x_3)$,                
                     $C(x_4)$, $C(x_5)$ }
    ]
  \end{axis}
\end{tikzpicture}
\end{document}

plot.png (11.31 KiB) Viewed 3910 times

Stefan

[esdd]

See also https://tex.stackexchange.com/a/399838