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<font face="Times New Roman">Hi!<br>
<br>
I made the following code which works fine with PSTricks and the
multido package.<br>
But..., in the "pstricks-add" documentation, it is written that
the star version <font face="Courier New, Courier, monospace">\psplotTangent*</font>
of the command <font face="Courier New, Courier, monospace">\psplotTangent</font>
plots only the tangent line in the positive x-direction. But that
is wrong. It plots only the tangent line in the positive
y-direction instead, and it makes this command completely
unusable. It is really a bug.<br>
Could it be rapidly corrected?<br>
<br>
Best regards<br>
<br>
Jacques<br>
<br>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
%<br>
\begin{pspicture}<br>
%<br>
\psset{unit=1}<br>
%<br>
\psparametricplot[algebraic,arrows=->,arrowsize=4pt
2,linecolor=blue]%<br>
{1.4}{10.6}{(t^2)/9 | sin(t)+1}%<br>
%<br>
\pscurvepoints{2}{11}{(t^2)/9 | sin(t)+1}{P}%<br>
\pspolylineticks[metricInitValue=1,ticksize=-2pt 2pt,%<br>
Os=1,Ds=.2,linecolor=red]{P}{ ds }{1}{66}<br>
%<br>
\pspolylineticks[metricInitValue=1,Os=1,Ds=2,linewidth=1pt,ticksize=-4pt
4pt,%<br>
linecolor=Green!40]{P}{ ds }{0}{7}%<br>
\multido{\iA=1+1,\iB=3+2}{6}{%<br>
\uput{6pt}[d](PTick\iA){\tiny \iB}%<br>
}<br>
%<br>
\def\P{sin(sqrt(9*x))+1}<br>
\def\Pd{cos(sqrt(9*x))*0.5*sqrt(9/x)}<br>
\multido{\n=1+2}{6}{\psplotTangent*[algebraic,%<br>
arrows=->,linecolor=orange,linewidth=.5pt,Derive=\Pd]{\n}{1}{\P}}<br>
%<br>
\uput{13pt}[r]{0}(PTick66){ $s$ }<br>
%<br>
<br>
\end{pspicture}<br>
%<br>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</font>
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