[R] Adding margin text to lattice graphics

Oscar Perpiñan Lamigueiro oscar.perpinan at upm.es
Mon Apr 11 20:08:33 CEST 2011


You can try the combination of c.trellis and update from the latticeExtra package. For example:

p <- xyplot(1~1)

update(c(p, p, p, p), xlab='SomeText', ylab='MoreText')

update(c(p, p, p, p), xlab=c('SomeText', 'SomeText2'), ylab=c('MoreText', 'MoreText2'))

There are lots of examples in help(c.trellis).


Oscar Perpiñán Lamigueiro
Dpto. de Ingeniería Eléctrica

En Sat, 9 Apr 2011 18:33:42 -0700
Dennis Fisher <fisher at plessthan.com> escribió:

> Colleagues
> I am learning lattice graphics (R 2.12.2; OS X).  Several days ago, I inquired about adding margin text to lattice graphics.  Jim Price offered a useful reply, suggesting that I add:
> 	page = function(page) grid.text('words', x = 0.5, y = 0.01)
> to my call to the function.  The entire function that he suggested was;
> 	xyplot(1 ~ 1,
>      	 par.settings = list(layout.heights = list(bottom.padding = 10)),
>      	 page = function(page) grid.text('words', x = 0.5, y = 0.01))
> That worked initially and I also had success with panel.text.
> However, I am now working with more complicated objects in which more than one image is displayed on a page.  In this instance, the text added by the command above appears with each image.  I would like it to appear only once, scaled across the entire page, not relative to a single panel.
> Is there a different command that accomplishes my goal?  Or a different implementation of this same command?  Any help would be greatly appreciated.
> Also, because of my naivete with lattice graphics, I may be asking the question in entirely the wrong way -- please feel free to redirect me.
> Dennis
> Dennis Fisher MD
> P < (The "P Less Than" Company)
> Phone: 1-866-PLessThan (1-866-753-7784)
> Fax: 1-866-PLessThan (1-866-753-7784)
> www.PLessThan.com
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