varlist

the varlist to be converted in "var1 var2 var3" format. Can be specified using the globbing characters "*" (match zero or more of any character) or "?" (match any single character) like "var*" or "var?" for "var1 var2 var3" or using regular expressions if <code>regex=TRUE</code> ("var[0-9]+" = "var1 var2 var3").

if "formula", return a varlist in formula format; if "vector", return a varlist in character vector format.

type

A varlist in <code>genvar</code> is either a space-separated string with wildcard characters, "var1 var2 var3 x*", or an R formula object ~var1+var2+var3+x1+x2.... This function converts from the more user-friendly space-separated string format to the formula format or to a vector of strings.

Implements tools for manipulating data sets and performing regressions in a way that is familiar to users of a popular, but proprietary, statistical package commonly used in the social sciences. Loads a single dataset into memory and implements a set of imperative commands to modify that data and perform regressions and other analysis on the dataset. Offers an alternative to standard R's function-based approach to data manipulation.

varlist: creates a formula object from a varlist, mostly for internal use.

Description

Usage

Arguments

Value