[R] grid lines aligned on each ticks with a log scale (original) (raw)
Benoit Boulinguiez benoit.boulinguiez at ensc-rennes.fr
Sat Mar 20 15:57:31 CET 2010
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Terrific! How could I've missed that. Well, I know, I didn't get it from the documentation...
Thanks
Regards/Cordialement
Benoit Boulinguiez
-----Message d'origine----- De : Duncan Murdoch [mailto:murdoch at stats.uwo.ca] Envoyé : samedi 20 mars 2010 14:54 À : Benoit Boulinguiez Cc : r-help at r-project.org Objet : Re: [R] grid lines aligned on each ticks with a log scale
On 20/03/2010 7:35 AM, Duncan Murdoch wrote:
On 20/03/2010 6:38 AM, Benoit Boulinguiez wrote:
Hi all,
for publication purpose I must provide a graph with grid lines aligned with each tick mark. Thing is that the graph has a log scale on the x-axis. I looked at the grid() and par() documentation but still don't figure out how to get it done.
simple example plot(seq(1,9), log="x", panel.first=grid()) how to get lines at x = 2 and 5 on the graph? Use abline instead of grid for fine tuning: plot(seq(1,9), log="x", panel.first=abline(v=c(1,2,5),h=c(2,4,6,8), lty=3,col="gray"))
or more simply, just use equilogs=FALSE in the grid call:
plot(seq(1,9), log="x", panel.first=grid(equilogs=FALSE))
Duncan Murdoch
Duncan Murdoch
Of course the option "nx" in grid() is not valid, as it does not align the grid lines with the ticks in a log scale...
Thanks for giving a hand. Regards/Cordialement ------------- Benoit Boulinguiez Ph.D student Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 "Sciences Chimiques de Rennes" Avenue du Général Leclerc CS 50837 35708 Rennes CEDEX 7 Tel 33 (0)2 23 23 80 83 Fax 33 (0)2 23 23 81 20 <http://www.ensc-rennes.fr/> http://www.ensc-rennes.fr/
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