enrico.fosco...@libero.it wrote:
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)
}
Example:
panel.cor <- function(x,y){
cor <- round(cor(x,y),4)
plot.window(0:1, 0:1)
text(0.5, 0.5, substitute(hat(rho)[list(i,j)] == cor,
list(cor=cor)), cex=1.2)
}
pairs(iris, lower.panel = panel.cor)
Thank You very much,
Enrico Foscolo
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and provide commented, minimal, self-contained, reproducible code.
