comma2mat: Convert comma-separated lists of selections to a...

In gmonette/HG: What the package does (short line)

Description

Converts a variable containing list of selections, e.g. 1,4,10 to a list of variables, e.g. V1, V2, ..., V10, containing TRUE of FALSE indicating whether the corresponding item was selected. BUG: The function may fail mysteriously if one of the 'inputs' is not a number between 1 and the maximum number.

Usage

comma2mat(x, name = "Q", sep = ",")

Arguments

x	variable to convert
sep	(default ',') separator between numbers
(default	'Q') name for new variable, which will be followed by numbers to identify each question.

Examples

df <- data.frame(id = 1:4,
     ans = c('1,2,3','5,2,1,4','',NA))
df
df <- cbind(df,comma2mat(df$ans,"Ques."))
df    

gmonette/HG documentation built on May 17, 2019, 7:25 a.m.