I’m using R 3.1.0 in OS X 10.9.4 (Mavericks) I’m running a function Y that calls a function X which occasionally generates a warning. Say that I call the function X 1000 times, and out of these 1000 times I get the following message: "There were 36 warnings (use warnings() to see them)" How can I store the number 36 in a variable in function Y? In other words, how can I extract the information on the number of warnings generated? Thank you in advance, Luís Borda de Água