The ifelse() function evaluates a logical object (usually a vector-valued logical condition) and returns an object of the same dimension with TRUE values replaced by a value, or vector of values,…
In this video we introduce read.table() for reading data from an external file into a data frame in R. We illustrate the use of this function via Example #1 in Mod9Script.R; you should download that…
This video introduces the SET command within a SAS data step for copying one dataset into another or for combining datasets vertically (vertical concatenation). This video covers essential content…