Did you know that there are multiple versions of the min and max function. make sure that you are using the right one. pmin and pmax are the 'parallel' versions of the min and max function, meaning that they can take vector arguments and return vectors back. Much better than setting up your own apply function....
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
