Modify a municipal id depending on the municipal status and yishuv id

In the context of working with cbs municipal and yishuvim data, there is a difference in the treatment of a yishuv and a municipality. In the cases of cities and local councils the yishuv id and the municipality id are the same. But in the case of regional councils, the municipality id is for the regional council, while every yishuv within that municipality has a different yishuv id. The Israeli CBS uses a concept of "municipal status" to differntiate between the two. A municipal status of "0" represents a city, and "99" represents a local council. Every other 2-digit number is the municipal id of a regional council. This function modifies a municipal status based on itself and the yishuv_id. It returns the correct municipal id after accounting for the "0" or "99" values.

Usage

modify_muni_id(muni_id, yishuv_id)

Arguments

muni_id: A character or numeric vector indicating the municipal status, where "0" or "99" represents a city or a local council, and every other two-digit number or character represents a regional council.
yishuv_id: A character or numeric vector representing the yishuv id. Should be 4 digits long according to the il.verse conventions.

Value

A character vector with 4 digits municipal id for cities and local councils and 2 digits municipal id for regional councils.

Examples

muni_id <- c(0, 99, 1, 2)
yishuv_id <- c("0001", "1000", "1234", "1567")
modify_muni_id(muni_id, yishuv_id)
#> [1] "0001" "1000" "01"   "02"