[R] barplot + plot

[juli g. pausas]

Dear all,
I've got another question,
By default barplot and plot seem to produce slightly different y-axis.
The problem I've got is when using a mix figure with both, barplot and
plot. For example:

barplot(1:5, ylim=c(0, 6))
par(new= T)
plot(1:5, 9:5, type="b", axes=FALSE, ylim=c(0,9))
axis(4)
box()

note that both plots (barplot and plot) should start at 0, but the exact
starting at 0 is only produced with barplot but not with plot.
Is there a way to make the two axes more coherent, that is both starting
at the exact 0 or both starting like the plot?

Thanks a lot for any suggestion

Juli

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