[R] Tick marks at the 0:0 point in a plot ()

[William Dunlap]

I don't understand your question - you want a tick mark at 0,0 but you
explicitly ask for the y axis to start at 100 (and to go upwards from
there).   Do you mean you want the initial tick mark on an axis to be
at the lower left corner of the plot?  If so, see if adding xaxs="i",
yaxs="i" to your plot command helps.  E.g., compare
  plot(0:10,0:10, xaxs="i", yaxs="i")
and
  plot(0:10,0:10)
Bill Dunlap
TIBCO Software
wdunlap tibco.com


On Mon, May 5, 2014 at 11:27 AM, Ahmed Attia <ahmedatia80 at gmail.com> wrote:
> Dear R usres,
>
> Sorry to bother you with my basic question. I have a quick question about
> tick mark in R. A reviewer wants the tick marks of the graph to start at
> 0:0 point. My current code below produces the tick mark a little far from
> the corner;
>
> plot(Simu2~Irrig, data=Ahmed,pch=17, col=1,subset=ET=="40",tck=-0.01,
> xlab = ("Applied Irrigation (mm)"),   ylab = expression(paste("Cumulative
> ET  (mm)"))
> ,cex.lab=1.2, cex.axis=0.8,cex=0.9,font.lab=1,xlim = c(0,1000),
> xaxp=c(0,1000,10), yaxp=c(100,800,7),
> ylim=c(100,800))
>
> Any ideas.
>
> Thank you
>
> Ahmed M. Attia
>
>
> Research Assistant
> Dept. of Soil&Crop Sciences
> Texas A&M University
> ahmed.attia at ag.tamu.edu
> Cell phone: 001-979-248-5215
> FAX: 001-308-455-4024
>
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