[R] axis lines crossing at origin

[Liaw, Andy]

You probably want something like:

plot(x,sin(x), xaxt="n", yaxt="n")
axis(1, pos=0)
axis(2, pos=0)

... but note that axis() only draws the axes from the minimum tick to the
maximum tick.  You may still want to add:

abline(v=0, h=0)

HTH,
Andy


> From: Robin Hankin
> 
> Hi
> 
> how do I make my axes cross at the origin?
> 
> x <- seq(from=-pi,to=pi,len=30)
> plot(x,sin(x))
> 
> makes the axes cross at about (-pi,-1).
> 
> How do I get my x and y axes to cross in the centre of the graph, 
> with the sine curve passing through
> the intersection?
> 
> I couldn't find anything in ?par or ?axis; searching R-FAQ for "axis" 
> didn't help.
> 
> 
> 
> 
> -- 
> Robin Hankin
> Uncertainty Analyst
> Southampton Oceanography Centre
> SO14 3ZH
> tel +44(0)23-8059-7743
> initialDOTsurname at soc.soton.ac.uk (edit in obvious way; spam 
> precaution)
> 
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