r - Display the names of specific elements in a plot -


i have volcano plot shown in

http://i.stack.imgur.com/urecs.jpg

i need display names of elements shown in red color out of 19000 elements

how can that?

also there anyways represent elements in red color in different sizes based on fold change , p-values?

you can label elements text function. change size of elements cex argument plot, instance

plot(1:10, cex=1:10*0.2) text(c(1,2)+0.4, c(1,2), c("p1", "p2"))

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