xtile: Bin variable in groups (similar to Stata xtile)

In statar: Tools Inspired by 'Stata' to Manipulate Tabular Data

Bin variable in groups (similar to Stata xtile)

Description

Bin variable in groups (similar to Stata xtile)

Usage

xtile(x, n = NULL, probs = NULL, cutpoints = NULL, wt = NULL)

Arguments

x	A vector
n	A numeric specifying number of quantiles. Can be used instead of cutpoints
probs	A vector of probabilities that an be used instead of cutpoints. Quantiles are computed as the inverse of the empirical distribution function (type = 1)
cutpoints	Cutpoints to use when nq is not specified. For instance cutpoints = 0.4 creates two groups, one for observations equal or below 0.4, one for observations superior to 0.4.
wt	A variable specifying weight in case the option n_quantiles is specified.

Value

An integer vector representing groups corresponding to cutpoints. Includes missing values when present in the original vector.

Examples

x <- c(NA, 1:10)                   
xtile(x, n = 3) # 3 groups based on terciles
xtile(x, probs = c(0.3, 0.7)) # 3 groups based on two quantiles
xtile(x, cutpoints = c(2, 3)) # 3 groups based on two cutpoints

statar documentation built on Aug. 19, 2023, 5:09 p.m.