Positioning text in top left corner of plot
You might want to look at the grconvertX and grconvertY functions. You can use them to convert a coordinate relative to the plotting device (screen, paper) or plotting region to user coordinates to use with text or mtext.
On Tue, Feb 7, 2012 at 4:06 AM, Manta <mantino84 at libero.it> wrote:
Dear all,
another questions related to zoo plotting. I would like to do as in the
subject. Here a reproducible code:
library(zoo)
par(mfrow=c(2,1)
plot(zoo(seq(1:10),as.Date(seq(1:10),origin="1970-01-01")),xlab="",ylab="",main="Value",las=1)
mtext("EUR billions",adj=0,cex=0.7)
plot(zoo(seq(1:10),as.Date(seq(1:10),origin="1970-01-01")),xlab="",ylab="",main="Value",las=1)
par(xpd=T)
text(par("usr")[1],par("usr")[3]+10.5,"EUR billions",cex=0.7)
In the first graph I use the mtext function, which does the trick but it
places the text too close too the y-axis.
A second possibility is to use the text function, prior specification of the
option parameter par(xpd=T). However, this does not look consistent as,
depending on the graph, I would need to add different numbers in the y
specification of the axis (par("usr")[3]+XXX).
Any idea?
--
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