Rdocumentation
powered by
Learn R Programming
Zelig (version 4.1-1)
retrieve.factors: Retrieve a list of all the factors in the specified column
Description
Retrieve a list of all the factors in the specified column
Usage
retrieve.factors(frames, by = NULL)
Arguments
frames
a list of
data.frame
objects
by
a character-vector specifying columns to search for factors within
Value
a list with entries corresponding to the value of the
by
parameter. The value of each index is unique values of the
data.frame
's columns.