[R] Setting where the x-axis crosses the y-axis

[stephane helleringer]

Hi all,

my apologies for a probably very obvious question but i can't figure out if, on
a bar plot, there is a simple way to have the x-axis cross the y-axis at 1,
when the y-axis is on a log-scale?
I want to draw a bar plot, and have some of the bars "drop" below 1 while
starting from 1. Is this possible?
I have been trying various things using barplot, barplot2 etc... without
success.
Thanks a lot for your help,

stephane