[R] Anomalous outputs from rbeta when using two different random number seeds

Hi, in the code below, I am drawing 1000 samples from two beta distributions, each time using the same random number seed. Using set.seed(80) produces results I expect, in that the differences between the distributions are very small. Using set.seed(20) produces results I can't make sense of. Aro

[R] Sensitivity and Specificity Forest Plots

Dear R Users, Do you know of an existing function that allows the production of sensitivity and specificity forest plots? See the following for an example: http://www.google.co.uk/imgres?q=forest+plots+of+sensitivity+and+specificity&um=1&hl=en&authuser=0&biw=1920&bih=989&tbm=isch&tbnid=JLxXNU7iQ2N