[pstricks] Outputting a particular value of a function using PSTricks

[Herbert Voss]

dpstory at uakron.edu wrote:
> Hi all,
> 
> Is there a way of computing a particular value of a function, say sin(20), using PSTricks?
> 
> I wish to typset a sentence like:
> 
> y-coordinate:  sin(20)
> 
> This is part of a multido that is reading out the x and y coordinates in an animation we are 
> trying to build.

for a TeX solution use the fp package or for a PS solution
the following code

Herbert


\documentclass[12pt]{article}
\usepackage{pstricks,multido}
%
\def\printValue#1{%
   \pstVerb{gsave /Times findfont 100 scalefont setfont #1 10 string cvs 
1 -1 scale show grestore}}
%
\parindent=0pt
\begin{document}

\makebox[2em]{\#} \makebox[5em]{$sin x$} \makebox[5em]{$cos x$}
                   \makebox[5em]{$\sqrt x$}\makebox[6em]{$sin^2 x+cos^2 
x$}\\[3pt]
\multido{\iA=0+10}{36}{
     \makebox[1em]{\iA}
     \makebox[5em]{\printValue{\iA\space sin}}
     \makebox[5em]{\printValue{\iA\space cos}}
     \makebox[5em]{\printValue{\iA\space sqrt}}
     \makebox[6em]{\printValue{\iA\space dup sin dup mul exch cos dup 
mul add}}\\}

\end{document}