[R] Changing the x-axis labels in plot()

Peter Dalgaard p.dalgaard at biostat.ku.dk
Thu Feb 23 19:22:30 CET 2006


"michael watson (IAH-C)" <michael.watson at bbsrc.ac.uk> writes:

> Hi
> 
> Hopefully this one isn't in the manual or I am about to get shot :-S

*Kapow*... [1]
 
> One of my colleagues wants a slightly strange graph.  We basically have
> a data matrix, and she wants to plot, for each row, the values in the
> row as points on the graph.  The following code draws the graph just
> fine:
>  
> plot(row(d)[,3:9],d[,3:9])
> 
> So as there are 12 rows in my matrix, there are 12 columns of points,
> which is what she wants.
> 
> However, she wants the x-axis labelled with the row names, not with
> 1,2,3,4,5 etc
> 
> I can figure out from reading par() how to turn off the default drawing
> of the numeri cal labels, but how do I use the row names instead?

axis(1, at=1:12, labels=rownames(d))


[1] Look e.g. at the examples section in plot.default.

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907




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