[pstricks] Using ps code in psplot's limits
Juergen Gilg
gilg at acrotex.net
Sat Mar 8 01:42:15 CET 2008
Dear Hubert,
this could be of interest for your subjects ...
\documentclass{article}
\usepackage{pstricks-add}
\begin{document}
\begin{pspicture}(-1.5,-0.5)(4.5,7.5)
\pstVerb{%
/funcf {0.5 mul neg Euler exch exp 6 mul} def
/funcg {0.5 mul Euler exch exp 0.5 mul} def
/x1 0 def
/x2 1 def
/x3 2 def
/x4 3 def
/x5 4 def
}
\psaxes{->}(0,0)(-0.5,-1.5)(5.5,7.5)
\psplot[linecolor=blue]{0}{5}{x funcf}
\psplot[linecolor=red]{0}{5}{x funcg}
\psdot(!x1 dup funcf)
\psdot(!x2 dup funcf)
\psdot(!x3 dup funcf)
\psdot(!x4 dup funcf)
\psdot(!x5 dup funcf)
\psdot(!x1 dup funcg)
\psdot(!x2 dup funcg)
\psdot(!x3 dup funcg)
\psdot(!x4 dup funcg)
\psdot(!x5 dup funcg)
\end{pspicture}
\end{document}
Regards,
Juergen
Hubert Lam wrote:
> Alan Ristow wrote:
>
>> Hubert Lam wrote:
>>
>>> Given that the usage of \psplot (excluding options) is
>>>
>>> \psplot{x_min}{x_max}{PS code for function}
>>>
>>>
>>> is there a mechanism that I'm not aware of that will allow the effects
>>> of this:
>>>
>>> \usepackage{pstricks,pst-math}
>>> \def\PiFour{PI 4 div}
>>> \psplot{0}{\PiFour}{x SIN}
>>>
>> Yes. I suppose there's more than one way to do it, but the way I would
>> do this is (untested):
>>
>
> Thank you gentlemen -- Jurgen's way is correct. That will make life MUCH
> easier now! :)
>
> Perhaps for the next example of the pstricks user manual might have more
> examples on using PostScript code? I'm happy to contribute especially
> with things like
>
> \def\Func{x COS}
> \psdot(!4 PI mul 7 div /x 4 PI mul 7 div def \Func)
>
> where the dot is created at (4pi/7, cos(4pi/7)). This I learnt from
> looking at one of Herbert Voss' examples on tug.org/pstricks and would
> be helpful to teachers/academics who are drawing curves.
> _______________________________________________
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>
>
>
--
Jürgen Gilg
Austr. 59
70376 Stuttgart
-------------------------------------
Tel 0711.59 27 88
e-Mail gilg at acrotex.net
Websites www.acrotex.net
www.brueckenkurs-physik.de
www.gilligan-online.de
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