[R] Misunderstanding with lines (or elsewhere)
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Jul 11 14:25:11 CEST 2006
Think about the coordinate system you are using: if you don't set the
margins to zero you will see what it is.
I suggest you supply x and y to image() to set the coordinate system to
what you want it to be.
On Tue, 11 Jul 2006, vincent at 7d4.com wrote:
> Misunderstanding with lines(...) :
> I would like the y coordinate of the horizontal line to be 1/4,
> and also the line to begin at x=0 and end at y=1.
And that is what you get.
> I'm obviously missing something
> ... so if anybody could help.
> Many thanks.
> test = function()
> bmp('test.bmp', width=100, height=100)
> m = matrix(0, 2, 2)
> par(new=T, fig = c(0,1,0,1), mai=c(0,0,0,0), mar=c(0,0,0,0), bty='n')
> lines(c(0,1), c(1/4,1/4)) # horizontal line
> a = dev.off()
> The result :
> R-help at stat.math.ethz.ch mailing list
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
More information about the R-help