[R] Including greek letters in a pairs() plot
enrico.foscolo2 at libero.it
enrico.foscolo2 at libero.it
Wed Mar 25 11:22:45 CET 2009
Good Morning,
I have a stupid problem about inclusion of greek letters in a
plot built with function pairs().
First of all, I have a matrix with 3 columns
and 1000 rows and I would like to use pairs() in order to plot points in the
upper panel and to compute correlation in the lower panel.
In the lower panel
I would like to see the following text in each ij-plot: hat(rho)[i,j]=cor(x,y).
Obviously, rho should be written in according to greek alphabet.
This is my
function:
panel.cor <- function(x,y){
cor<-0
cor<-round(cor(x,y),4)
text
(0.5,0.5,cor,cex=2)
}
Thank You very much,
Enrico Foscolo
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