From p.dalgaard at biostat.ku.dk  Tue Jul 22 15:01:39 2008
From: p.dalgaard at biostat.ku.dk (Peter Dalgaard)
Date: Tue, 22 Jul 2008 15:01:39 +0200
Subject: [Rd] Is text(..., adj) upside down? (Or am I?)
In-Reply-To: <s885d468.016@tedmail.lgc.co.uk>
References: <s885d468.016@tedmail.lgc.co.uk>
Message-ID: <4885DA33.6020301@biostat.ku.dk>

S Ellison wrote:
> ?text says
>     "'adj' allows _adj_ustment of the text with respect to '(x,y)'.
>      Values of 0, 0.5, and 1 specify left/bottom, middle and
> right/top,
>      respectively."
>
> But it looks like 0, 1 specify top, bottom respectively in the y
> direction.
>
> plot(1:4)
> text(2,2, "adj=c(0,0)", adj=c(0,0))
> text(2,2, "adj=c(0,1)", adj=c(0,1), col=2) #the red one's below the
> black one...
>
> #x-adj is OK
> text(3,3, "adj=c(0,0)", adj=c(0,0))
> text(3,3, "adj=c(1,0)", adj=c(1,0), col=2)
>
> [I am using r 2.7.1 in windows; adj behaviour is consistent in 2.6.0ff
> and for expressions as well as text]
>
> Perhaps a two-word correction to ?text ?
>   
You're just confused:

TOP adjusted text is BELOW bottom-adjusted text.
RIGHT adjusted text to the LEFT of left-adjusted text.

See?

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[Rd] Is text(..., adj) upside down? (Or am I?)
Peter Dalgaard