[pstricks] PSTricks Digest, Vol 102, Issue 13

[grivet]

Hello,

I have a problem with the "exp" function of pst-plot. I have copied a 
recent piece of code by Herbert Vosz (from july 7th) and simply changed 
a "sin" function for an "exp", thus:

  \documentclass{article}
\usepackage{pst-plot}
\begin{document}

\psset{unit=.8cm,plotpoints=500}
\begin{pspicture}(-1,-3)(11,7)
    \psaxes[arrowscale=2,Dx=20,dx=2,Dy=20,dy=2,subticks=10,
    ,ticklinestyle=dashed,yticksize=0 10,xticksize=-3 7,
    tickcolor=black!50,subtickcolor=black!20,
    subticksize=1]{->}(0,0)(0,-3)(10.5,7.5)[$x$,-90][$y$,180]
    \psplot[linewidth=1.5pt,algebraic,
            linecolor=red]{0}{10}{4*exp(-x/3)+2}
\end{pspicture}

\end{document}

This compiles allright but will not display in yap, with error message:

MiKTeX Problem Report
Message: Some PostScript specials could not be rendered.
Data: Error: /typecheck in --moveto--
Operand stack:
    --nostringval--   PermitFileReading   --nostringval--   
PermitFileWriting   --nostringval--   45.5246
Execution stack:
    %interp_exit   .runexec2   --nostringval--   --nostringval--   
--nostringval--   2   %stopped_push   --nostringval--   
--nostringval--   --nostringval--   false   1   %stopped_push   1914   
1   3   %oparray_pop   1913   1   3   %oparray_pop   1897   1   3   
%oparray_pop   1787   1   3   %oparray_pop   --nostringval--   
%errorexec_pop   .runexec2   --nostringval--   --nostringval--   
--nostringval--   2   %stopped_push   --nostringval--
Dictionary stack:
    --dict:1166/1684(ro)(G)--   --dict:0/20(G)--   --dict:87/200(L)--   
--dict:95/300(L)--   --dict:37/200(L)--   --dict:128/200(L)--
Current allocation mode is local
MiKTeX GPL Ghostscript  9.00: Unrecoverable error, exit code 1

nor in ghostview:

GSview 4.9 2007-11-18
Unknown in Comments section at line 8:
   %%DocumentFonts: CMR10 CMSY10 CMMI10
<a few hundred such lines deleted>

GPL Ghostscript  9.00 (2010-09-14)
Copyright (C) 2010 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
Displaying DSC file D:/travail/essai1.ps
Displaying page 1
Error: /stackunderflow in --moveto--
Operand stack:
    45.5246
Execution stack:
    %interp_exit   .runexec2   --nostringval--   --nostringval--   
--nostringval--   2   %stopped_push   --nostringval--   
--nostringval--   false   1   %stopped_push   1910   1   3   
%oparray_pop   1909   1   3   %oparray_pop   1893   1   3   
%oparray_pop   1787   1   3   %oparray_pop   --nostringval--   
%errorexec_pop   .runexec2   --nostringval--   --nostringval--   
--nostringval--   2   %stopped_push   --nostringval--
Dictionary stack:
    --dict:1163/1684(ro)(G)--   --dict:0/20(G)--   --dict:91/200(L)--   
--dict:177/300(L)--   --dict:37/200(L)--   --dict:128/200(L)--
Current allocation mode is local
Last OS error: No such file or directory

--- Begin offending input ---
h pop } PutCoor
PutBegin  end
  828 1763 a 828 1763 a
tx at Dict begin { 5.0 5.2616 4.30554 1.94444 180.  Uput UUput } PutCoor
PutBegin  end
  828 1763 a 806 1773 a Fa(y)828
1763 y
tx at Dict begin  PutEnd  end
  828 1763 a 828 1763 a
tx at Dict begin  PutEnd  end
  828 1763 a @beginspecial
@setspecial
   tx at Dict begin STP newpath /ArrowA { moveto } def /ArrowB { } def
  1.5 SLW 1 0 0  setrgbcolor  /ArrowA { moveto } def /ArrowB { } def
    /x 0 def /x1 10 def /dx x1 x sub 499 div def /F at pstplot (4*exp(-x/3)+2)
  tx at AlgToPs begin AlgToPs end cvx def /xy { x 22.76228 mul F at pstplot
22.76228 mul } def  /ps at Exit false def xy moveto  499 1 sub { /x x
dx add def xy  dup 1.e30 22.76228 mul gt { moveto }{ dup -1.e30 22.76228
mul lt { moveto }{ L } ifelse } ifelse  } ps at Exit { exit } if repeat
ps at Exit not { /x x1 def xy  dup 1.e30 22.76228 mul gt { moveto }{ dup
-1.e30 22.76228 mul lt { moveto }{ L } ifelse } ifelse  } if  gsave
1.5 SLW 1 0 0  setrgbcolor  1. .setopacityalpha   0  setlinejoin 0
  setlinecap stroke  grestore end

@ends
--- End offending input ---
file offset = 134014
gsapi_run_string_continue returns -101


Could anybody tell me what's wrong ?
TIA,
JP Grivet