'R: How to add fill color to a dot with legend with black circle outline
I am trying to create a legend (with empty plot) where each dot is associated with a group, but can't seem to figure out how to add fill color while having a black outline. It seems that my bg parameter is not working.
This is what my code looks like:
plot(NULL ,xaxt='n',yaxt='n',bty='n',ylab='',xlab='', xlim=0:1, ylim=0:1)
legend("topleft", legend =c("X", "A1", "A2", "A3", "A4", "A5", "A6"),pch=21, pt.cex=1.5, cex=0.8, bty='n', y.intersp=1.1, bg = c("black", "red", "yellow", "green", "cyan", "blue", "magenta"), col = "black")
Sources
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