[pstricks] psplottangent

[Dehaes]

Hello,

 

A few weeks ago, I had a problem with psplotTangent when xunit and yunit
were different. Herbert solved the problem by a modification to
pstricks-add.

 

Now with the newer version (2.70) of this package, the problem reappears: le
tangent is not tangent to the curve.

 

The version 2.62 is OK.

 

Jean-Claude

 

\listfiles

\documentclass{scrartcl}

\usepackage{pst-func,pst-math}

\usepackage{pstricks-add}

 

\begin{document}

 

\begin{center}

\psset{xunit=2,yunit=1}

\begin{pspicture}(0,0)(2,5)

\def\FF{x dup mul}

\def\dFF{x 2 mul}

\psaxes[Dx=0.5,Dy=1](0,0)(2,5)

\psplot[linecolor=red,linewidth=1.5pt]{0}{2}{\FF}

\psplotTangent{1}{1}{\FF}\psdot(! 1 /x 1 def \FF)

\end{pspicture}

\end{center}

 

 

\begin{center}

\psset{xunit=10,yunit=0.2}

\begin{pspicture}(2.5,10)(3.5,35)

\def\F{x ENeperian exch exp}

\def\dF{x ENeperian exch exp}

\psaxes[Dx=0.1,Dy=5,Ox=2.5,Oy=10](2.5,10)(3.5,35)

\psplot[linecolor=red,linewidth=1.5pt]{2.5}{3.5}{\F}

\psplotTangent[showpoints=true,Derive=\dF]{3}{0.1}{\F}

%\uput[-90](9,0){$x$}

%\uput[180](0,7){$y=f(x)$}

\end{pspicture}

\end{center}

\end{document}

 

scrartcl.cls    2004/09/16 v2.9t LaTeX2e KOMA document class

scrlfile.sty    2004/09/16 v2.9t LaTeX2e KOMA package

  size11.clo    2004/02/16 v1.4f Standard LaTeX file (size option)

typearea.sty    2004/09/16 v2.9t LaTeX2e KOMA package

pst-func.sty    2004/10/18 package wrapper for pst-func.tex (hv)

pstricks.sty    2005/06/02 v0.24 LaTeX wrapper for `PSTricks' (RN,HV)

pstricks.tex    2005/09/08 v1.11 `PSTricks' (tvz)

  xcolor.sty    2005/10/15 v2.06 LaTeX color extensions (UK)

   color.cfg    2001/08/31 v1.1 color configuration of teTeX/TeXLive

   dvips.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)

pst-func.tex    2005/09/23 v0.41 `PST-func' (hv)

pst-xkey.tex    2005/02/22 v1.5 PSTricks specialization of xkeyval (HA)

 xkeyval.sty    2005/07/10 v2.5c package option processing (HA)

 xkeyval.tex    2005/07/10 v2.5c key=value parser (HA)

pst-math.sty    2004/03/20 package wrapper for PSTricks pst-math.tex

pstricks-add.sty    2005/03/03 package wrapper for pstricks-add.tex (hv)

pstricks-add.tex    2005/10/18 v2.70 `PSTricks-add' (hv)

 

 

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