Re: Customize ticks and label of x-axis

["Naomi B. Robbins" <n.robbins@att.net>]

Tristan,

There is no need to label every tick mark. What you suggest would
produce a cluttered look that would take attention away from the
data. A more serious problem is that you use equally spaced tick
marks for different numbers of years. The first two tick marks
represent five years; the next two four years, and then each pair
represents two years. This makes the slopes in the early part of
the graph misleading.

Naomi

---
Naomi B. Robbins
NBR
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Tristan Lorino wrote:

> Hi,
>
> I have a graphic with dates in x-axis: it's available at
> http://daedale.free.fr/erwin/example.png
>
> All the dates can't stand together, because of their length. I would
> like to know if it is possible to put one date (and its tick) under the
> x-axis, the next (date and tick) above the x-axis, the next under, etc.
>
> Thank you,
> Tristan Lorino
>
> PS : The graphic code is
> plot(y,type="b",pch=16,ylim=c(.45,.75),axes=F,xlab="Années",ylab="",col=2)
> text(-3,.6,"CFT",srt=90)
> axis(2,at=c(.45,.5,.55,.6,.65,.7,.75),lab=c("0,45","0,50","0,55","0,60","0,65","0,70","0,75"),adj=0.8)
> axis(1,at=1:29,lab=gag,cex=.9)
> axis(3,at=1:29,eff,cex=.8,srt=90,adj=.1)
> mtext("Nombre de relevés",side=3,outer=T,cex=.8)
> box()
>
>
>