[pstricks] Sketching the graph of the tangent function

[Herbert Voss]

Paul Smith wrote:

> The above example works fine with latex+dvips. However, with
> pst-pdf+ps4pdf, I get the following error:
> 
> «(/usr/share/texmf/tex/context/base/supp-mis.tex
> loading : Context Support Macros / Miscellaneous (2004.10.26)
> )
> loading : Context Support Macros / PDF (2004.03.26)
> )
> Preview: Fontsize 12pt
> Preview: PDFoutput 1
> ! Undefined control sequence.
> \c at lor@to at ps ...name c at lor@ps@#1\endcsname #2 \@@
> 
> l.30 \psline[linestyle=dashed, dash=3pt 2pt](
>                                              -4.712389,-3.5)(-4.712389,3.5)
> ?
> ! Emergency stop.
> \c at lor@to at ps ...name c at lor@ps@#1\endcsname #2 \@@
> 
> l.30 \psline[linestyle=dashed, dash=3pt 2pt](

this was the pdflatex run without an active pst-pdf

Please send me your complete example and log file.
And also the <file>-pics.pdf and *.ps

Herbert