[pstricks] skipping domain values in psplot

[Herbert Voss]

Am 19.03.2010 14:47, schrieb Hensh, Richard:
> Dear All,
> 
> The code fragment below works exactly as expected. The gamma function is plotted from 
> x= -0.99 to x = 5 and the vertical asymptote at x=0 is ignored. Is there a way modify my postscript definition of f at x further to trick (no pun intended) psplot into ignoring multiple inputs. The appropriate list in this example would be {-5, -4, ..., 0} but, in general, such a list could be arbitrary.


\documentclass[12pt]{article}
\usepackage{pst-all}
\begin{document}

\def\xmin{-5}\def\xmax{5}
\def\ymin{-16}\def\ymax{16}
\def\dommin{-0.99}\def\dommax{\xmax}

\psset{yunit=3mm}
\begin{pspicture}(\xmin,\ymin)(\xmax,\ymax)
  \psaxes[labels=none,ticks=none,axesstyle=axes,
    arrowscale=1.5]{<->}(0,0)(\xmin,\ymin)(\xmax,\ymax)
  \psplot[linecolor=blue,plotpoints=2000,linewidth=1.25pt,
     yMaxValue=15]{\dommin}{\xmax}{x GAMMA}
  \end{pspicture}

\end{document}


Herbert