[R] Bug in axis(...,tcl=0)?

[Hedderik van Rijn]

Hi,

first of all, I would like to take this opportunity to thank all of you
"answer guys" for giving such detailed answers. I think I've learned about
as much from all these answers as from the different S/R documents I've
read so far.

Anyway, I ran into a incompatability between S and R, that is, R does not
know the "ticks=T/F" argument to functions like axis and plot. Knowing
that R is not S, I tried to do it in a different way by adding "tcl=0" to
the axis call. This works fine, however, in next calls to axis, it seems
to remember this tcl setting, whereas settings like tck are not
remembered. Is there a rationale behind this behavior, or is this a bug?

Below is the code which demonstrates this, ran in R version 63.1, on a
linux machine:

plot(c(1:10),c(1:10),axes=F,type="n");
box();
par()$tcl    # [1] -0.5
axis(1,c(1:10),tcl=0)
par()$tcl    # [1] -0.5
# I expected the next command to draw tick marks, but they don't show
axis(2,c(1:10))
# Draw them anyway
axis(2,c(1:10),tcl=-0.5)
# Show that other arguments are not "remembered"
axis(3,c(1:10),tck=0.5)
axis(4,c(1:10))

Greetings,
   Hedderik.

-- 
http://www.swi.psy.uva.nl/usr/rijn 

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