[R] Adding margin text to lattice graphics

From: Dennis Fisher <fisher_at_plessthan.com>
Date: Sat, 09 Apr 2011 18:33:42 -0700


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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