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Superscripts and subscripts in trellis graphics

4 messages · Steve_Friedman at nps.gov, Simon Pickett, Gabor Grothendieck

#
I'd like to annotate an xyplot with an R^2 value, but can not find the
syntax to define the superscript format for the text.

I'd appreciate suggestions,

xyplot(SharkSloughEggs.df$Sharkeggs.rel +
SharkSloughEggs.df$SharkHatched.rel + SharkSloughEggs.df$SharkFlooded.rel +
HSI.shark$MEAN ~ Year,
           pch=c(1,9,5,4), lty=c(1,6,3,4), lwd = c(2), col = c("black",
"blue", "green", "red"),
           scales=list(tick.number=length(Year)), data=SharkSloughEggs.df,
ylab="Relative Egg Success",
           main="Shark Slough Alligators",
           par.settings = graph.sets,  type = "b")
                 trellis.focus()
                    panel.text(x=1999, y = 0.95, labels="Hatched Eggs\nR^2
= -0.18", cex = 0.75)
                    panel.text(x=1998, y = 0.35, labels="Number of
Eggs\nR^2 = 0.43",cex = 0.75)
                    panel.text(x=1995, y = 0.25, labels="Flooded Eggs\nR^2
= -0.50", cex = 0.75)
                    panel.text(x=1986, y = 0.3, labels="Mean HSI", cex =
0.75)
                 trellis.unfocus()


Thanks
Steve


Steve Friedman Ph. D.
Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034

Steve_Friedman at nps.gov
Office (305) 224 - 4282
Fax     (305) 224 - 4147
#
Hi Steve,

you need to use the expression() function. I think it is described under 
?plotmath. Defo works with mtext, not sure about ylab.

try

ylab(text=c(expression(paste("Hatched Eggs R"^{2}))))

etc.

----- Original Message ----- 
From: <Steve_Friedman at nps.gov>
To: <r-help at r-project.org>
Sent: Monday, May 18, 2009 3:25 PM
Subject: [R] Superscripts and subscripts in trellis graphics
#
Try:

R2 <- -0.18
panel.text(label = bquote(R^2 == .(R2)), ...
On Mon, May 18, 2009 at 10:25 AM, <Steve_Friedman at nps.gov> wrote:
#
Gabor's solution has worked very nicely.

Thank you very much.

Steve Friedman Ph. D.
Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034

Steve_Friedman at nps.gov
Office (305) 224 - 4282
Fax     (305) 224 - 4147


                                                                           
             Gabor                                                         
             Grothendieck                                                  
             <ggrothendieck at gm                                          To 
             ail.com>                  Steve_Friedman at nps.gov              
                                                                        cc 
             05/18/2009 10:45          r-help at r-project.org                
             AM AST                                                Subject 
                                       Re: [R] Superscripts and subscripts 
                                       in trellis graphics                 
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Try:

R2 <- -0.18
panel.text(label = bquote(R^2 == .(R2)), ...
On Mon, May 18, 2009 at 10:25 AM, <Steve_Friedman at nps.gov> wrote:
+
http://www.R-project.org/posting-guide.html