This seems a simple question, so I hope its a simple answer. I am plotting my points and fitting a linear model, which I can do OK. I then want to plot some summary statistics, for example the R Squared value, on the plot also. I can only seem to get the R Squared value at the command line.
Any advice; do I need to be looking at ggplot or anything else? Thanks in advance.
#Does the plot
#Adds the line
#Shows stats on command line
You can abuse
legend() because it has the handy logical placement:
R> DF <- data.frame(VAR1=rnorm(100), VAR2=rnorm(100)) R> with(DF, plot(VAR1, VAR2)) R> abline(fit <- lm(VAR2 ~ VAR1, data=DF), col='red') R> legend("topright", bty="n", legend=paste("R2 is", + format(summary(fit)$adj.r.squared, digits=4)))
bty="n" suppresses the box, and you need
format() to shorten the display. Other
text() is good, as are arguments