the name of the variable to be generated

the transformation of the dataset to replace the "newvar" in option <code>form</code> with. For example, value="sum(wage*female)" to get a variable which has total female wages. In Stata, the same command would be: "egen femalewage = total(wage*female)".

value

apply the value for each level of the by variables, specified either as a formula, like ~byvar1+byvar2+... or as a varlist "byvar1 byvar2 byvar3...".

byvar

only generate values if the condition provided in subset is true. Make sure to enclose the expression in quotes, like so: subset="female==1 &amp; highschool==1" to generate the values only for women who graduated from highschool. This option is used like the "if" in Stata.

subset

either TRUE or FALSE. If FALSE (default), the code refuses to alter the variable if the variable already exists. Otherwise, if replace=TRUE, then the values will be replaced.

replace

generates a new variable that is a transformation of existing variables in the dataset or replaces one

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.

gen: generates a new variable that is a transformation of existing variables in the dataset or replaces one

Description

Usage

Arguments

Value