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Maximum hierarchical levels

Source: R/max_levels.R
max_levels.Rd

Given a data frame with columns specifying hierarchically-nested levels, find the maximum non-missing hierarchical level for each row.

Usage

max_levels(x, pattern, by, type = c("index", "name"))

Arguments

x

a data frame containing hierarchical columns

pattern

regex pattern to match the names of the hierarchical columns in ref (supply either pattern or by)

by

vector giving the names of the hierarchical columns in ref (supply either pattern or by)

type

type of return, either "index" to return integer indices (starting at 1) or "name" to return column names (as matched by pattern or by)

Value

Vector of indices or names corresponding to the maximum non-missing hierarchical level for each row

Examples

data(ne_ref)

# return integer indices (starting at 1)
max_levels(ne_raw, pattern = "^adm")
#>  [1] 3 2 3 3 3 3 3 3 3 3 2 2 3 3 3

# return column names
max_levels(ne_raw, pattern = "^adm", type = "name")
#>  [1] "adm2" "adm1" "adm2" "adm2" "adm2" "adm2" "adm2" "adm2" "adm2" "adm2"
#> [11] "adm1" "adm1" "adm2" "adm2" "adm2"