[R] pdf() black&white; panel titles in lattice

[ftorrei2@uiuc.edu]

Thank you so much for your help. Now I think I can use R for
everything I need so far. However I think that I haven't found
a solution for my first question. trellis.device(color=F) only
affects the trellis device, but not the pdf device, doesn´t
it? At least that is my impression. I manage to get black and
white graphics in trellis, but whenever I switch on the pdf
device, the resulting pdf file is in color, even if I specify
 pdf(X.pdf, bg="white", fg="black") (I wonder what the use of
bg and fg is). The thing is that I need black and white
graphics for my papers. I am using R on OSX. Does this happen
to anyone else?

Thanks again 

---- Original message ----
>Date: Fri, 15 Jul 2005 12:16:36 -0500
>From: Deepayan Sarkar <deepayan.sarkar at gmail.com>  
>Subject: Re: [R] pdf() black&white; panel titles in lattice  
>To: "ftorrei2 at uiuc.edu" <ftorrei2 at uiuc.edu>
>Cc: r-help at stat.math.ethz.ch
>
>On 7/15/05, ftorrei2 at uiuc.edu <ftorrei2 at uiuc.edu> wrote:
>> Hello,
>> 
>> I have two questions:
>> 
>> 1. How can I get black and white graphics using the pdf()
>> device? I have tried pdf(Name.pdf, bg="white", fg"black"), but
>> I still get  full-color graphics.
>
>See ?trellis.device, specifically the 'color' argument.
>
>> 2. When using lattice, how do I change the title for each
>> panel?  By default it uses the categories of the grouping
>> factor. I would like to modify the labels in the graphic
>> without changing the data. 
>
>See the entry for 'strip' in ?xyplot, as well as
?strip.default. For
>one conditioning variable this can be as simple as
>
>xyplot(Sepal.Length ~ Sepal.Width | Species, iris, 
>    strip = strip.custom(factor.levels = c("I. setosa", 
>                                  "I. versicolor", "I.
verginica")))
>
>or 
>
>xyplot(Sepal.Length ~ Sepal.Width | Species, iris, 
>    strip = strip.custom(factor.levels = 
>        expression(italic("I. setosa"), 
>                         italic("I. versicolor"), 
>                         italic("I. verginica"))))
>
>
>> Also, how do I add a title above
>> the graphic referring to this factor (not the main title of
>> the graph)? The title for the xlab refers to the independent
>> factor within each panel. I would like to explain what each
>> panel represents with something similar to xlab, this title
>> being above the graphic if possible.
>
>You may be satisfied with 
>
>xyplot(Sepal.Length ~ Sepal.Width | Species, iris, 
>          strip = strip.custom(strip.names = TRUE))
>
>If not, use the 'key' argument (described in ?xyplot).
>
>Deepayan
Francisco Torreira
Spanish, Italian and Portuguese
Univ. of Illinois at Urbana-Champaign
707 South Mathews Aven.
4031 FLB
Urbana, IL, 61801