[R] Creating a flat legend 'grob' for lattice xyplot

[Gesmann, Markus]

Hi Mark,

I believe the argument you are looking for is column not ncol.
Try the following:

library(lattice)
xyplot(1~1,
auto.key=list(
bty='n',
pch=rep(c(15,17),2),
col=c('brown','green','blue','red'),
columns=4,      
text=c('How','to make','this into', 'a grob?'),
space="top"
))

 
Regards

Markus

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Mark
Sent: 27 July 2011 18:32
To: r-help at r-project.org
Subject: [R] Creating a flat legend 'grob' for lattice xyplot

Hi,

I want my xyplot legend to be flat, not tall, and there seems to be no way for xyplot's auto.key and key elements to do this: I tried many, many permutations of what I could find in the archives and reading the documentation.  If there there's a way to make it flat, please tell me what the magic incantation is.

Here's a simple example of what I like to see.  The xyplot will be a multi-panelled one with a single, flat legend below.  It seems the xyplot's legend element is the way to go -- the option I haven't tried because I don't know what or how to create a grob of this kind.  Where to start?

xyplot(1~1)
legend(0.15,-0.125,
bty='n',pch=rep(c(15,17),2),col=c('brown','green','blue','red'),ncol=4,
          legend=c('How','to make','this into', 'a grob?'))

Thanks!



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