[pdftex] eepic and pdflatex

Fri Feb 9 15:42:24 CET 2001

Don Robinson (drrobin at ilstu.edu) wrote:

: I teach statistics and use pdf files for various purposes.  When drawing
: distributions (normal, t, etc.) I use diagonal lines (e.g.
: \line(1,1){length}) to shade appropriate parts of the distribution.  For
: lines shorter than allowed by LaTeX's picture environment, my practice is
: to use bezier curves to fake straight lines (e.g.,
: \qbezier(x1,y1)(x1,y1)(x2,y2)).  The appearance in printed output is
: satisfactory, but in pdf files you can see the difference if the diagram is
: enlarged even slightly.  A few months ago I started using the eepic package
: and replaced all straight-line bezier curves.  The printed output looks
: better but when I try to create a pdf file I get the usual complaint:
: Non-pdf special ignored.  
: 
: Is there any way I can use the eepic package and create pdf files that show
: these lines?  I am using the current TeXLive 5.0.

This is not an answer to your question, but
have you ever considered using metapost?
If not, I would suggest you have a look at
http://www.tug.org/metapost.html

It is *ideal* for drawing graphs and text. I have
attached some quickly hacked metapost code to shade
a curve (it's a brute hack). I have also attached
the resulting output.

You can convert the eps to pdf, but pdflatex also
lets you input metapost generated eps directly.

Regards,

Marc van Dongen
-- 
     Marc van Dongen, CS Dept | phone:  +353 21 4903578
University College Cork, NUIC | Fax:    +353 21 4903113
  College Road, Cork, Ireland | Email: dongen at cs.ucc.ie
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%!PS-Adobe-3.0 EPSF-3.0
%%BoundingBox: -1 -1 143 143 
%%Creator: MetaPost
%%CreationDate: 2000.09.26:1853
%%Pages: 1
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verbatimtex
\documentclass{article}
\usepackage{euler}
\begin{document}
etex;

defaultfont := "cmr12";
defaultscale := 12pt /fontsize defaultfont;
input mp-tool;
prologues := 2;
input boxes;

u = 5cm;

def f( expr x ) = x*x enddef;

def shade( expr curve, lwb, upb, lines ) =
  pickup pencircle scaled 0.7pt;
  for i = 0 upto lines - 1:
    draw ((lwb+i*(upb-lwb)/(lines-1), 0)--
          (lwb+i*(upb-lwb)/(lines-1), infinity))
          cutafter curve;
  endfor;
enddef;

beginfig(0);
  path curve;
  pair posn;
  points = 6;
  size   = points - 1;

  curve = (0,u*f( 0 )) for i = 1 upto size: ..(u*i/size,u*f( i/size )) endfor;
  pickup pencircle scaled 2pt;
  draw curve;
  shade( curve, 0, u, 31 );

  pickup pencircle scaled 1pt;
  posn = (0.5u,0.5u);
  drawarrow posn--(((0,u)--(u,0)) intersectionpoint curve);
  label.ulft( btex $x^2$ etex, posn );
endfig;

end.