(This article was first published on Heuristic Andrew » r-project, and kindly contributed to R-bloggers)
Deleting rows from a data frame in R is easy by combining simple operations. Let’s say you are working with the built-in data set airquality and need to remove rows where the ozona is NA (also called null, blank or missing). The method is a conceptually different than a SQL database that has a dedicated [...]
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Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
