make_airports: Make or load airport data

In david6marsh/himach: Find Routes for Supersonic Aircraft

Make or load airport data

Description

make_airports ensures a minimum set of variables describing airports

Usage

make_airports(ap = NA, crs = crs_longlat, warn = TRUE)

Arguments

ap	Dataframe containing the minimum fields, or NA (default)
crs	Coordinate reference system for the coded lat-longs. Default 4326.
warn	warn if default set is used (default = TRUE)

Details

This function provides a test set of airports if necessary from airportr::airports and geocodes the lat-long of this or the dataset provide as ap.

This minimal set needs to have the following fields:

• APICAO: the 4-letter ICAO code for the airport (though there is no validity check applied, so 'TEST', or 'ZZZZ' could be used, for example)

• lat, long: latitude and longitude in decimal degrees

Value

Dataframe with, in addition, a geocoded lat-long.

Examples

# do minimal version
airports <- make_airports()

# on-the-fly example
airports <- data.frame(APICAO = "TEST", lat = 10, long = 10, stringsAsFactors = FALSE)
airports <- make_airports(airports)

## Not run: 
# example for your own data
airports <- utils::read.csv("data/airports.csv", stringsAsFactors = FALSE)
airports <- make_airports(airports)

## End(Not run)

david6marsh/himach documentation built on Oct. 20, 2023, 6:43 p.m.