[Rd] minor tick marks for plots (PR#13616)

[wiese at gfz-potsdam.de]

Hello,

I think I found a bug:

 > windows(1,width = 10, height = 10, pointsize = 5,xpos = 0, ypos = 0 )
 > hdata[1:3,1] <- c(1,10,15)
 > hdata[1:3,2] <- c(2,1,4)
 > plot(hdata[,1],hdata[,2],xaxt="n")
 > axis(1,at=c(2,10,14))
 > minor.tick(nx=2, ny=1,tick.ratio=1)

the minor tick marks appear between the tick marks which would have been 
drawn without the option xaxt="n".

I use R.2.8.1.

Best Regards
Bernd Wiese




Dr. Bernd Wiese
Dipl.-Ing., MSc

Centre for CO2 Storage
Phone.: +49 (0)331/288-1823
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Email: wiese at gfz-potsdam.de
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