[R] Truncated x-axis values

[Urban, Alexander]

Hello 

I'm new to this group. I looked up the last two hour in the help file
and in the archives of this group, but didn't find anything.
I hope my question is not too dump:
I'm printing a graph with vertical labels on the x-axis (necessary due
to many labels). Unfortunately the png truncates the labels halfway
through, so that you can only read the last 7 digits of the label.
Snice I'm already asking :-): Is there a possibility to tell R: If there
are so many labels that you write them on top of each other, take only
e.g. every 2nd...

Sorry for bothering and thanks
Alex