Add Alberta flag to a site data frame using precise boundaries

Uses rnaturalearth and sf to determine if each site is in Alberta.

Usage

add_alberta_flag(dat, lat_col = "latitude", lon_col = "longitude")

Arguments

dat

Data frame with latitude and longitude columns

lat_col

Name of latitude column (default: "latitude")

lon_col

Name of longitude column (default: "longitude")

Value

Data frame with in_alberta column (TRUE/FALSE logical)