[R] plot-parameter pch without influence when plotting a data-frame

[Oliver Bandel]

Hello,


I'm plotting a data-frame and use

plot(......., pch=...)

as well as setting pch with

par(pch=...)


but always get the default symbol (circle)
for the plots.

Does pch have no effect, when plotting a complete
data-frame, instead of certain values/vectors?


How to change the behaviour?
Do I have to change the print-function?

TIA,
   Oliver