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Prints the R2 with text size depending on the size of R2
panel.r2(x, y, digits = 2, cex.cor, ...)
a numeric vector of x values
a numeric vector of y values
a numeric value giving the number of digits to present
scaling fator for the size of text
extra options (not used at the moment)
Claus Ekstrom claus@rprimer.dk
This function is a slight modification of the panel.cor function defined on the pairs help page. It calculated and prints the squared correlation, R2, with text size depending on the proportion of explained variation.
Ekstrom, CT (2011) The R Primer.
pairs(~ Ozone + Temp + Wind + Solar.R, data=airquality, lower.panel=panel.smooth, upper.panel=panel.r2)
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