pub fn eurodist() -> Result<DataFrame, PolarsError>Expand description
§Distances Between European Cities and Between US Cities
§Description:
The ‘eurodist’ gives the road distances (in km) between 21 cities in Europe. The data are taken from a table in The Cambridge Encyclopaedia.
‘UScitiesD’ gives “straight line” distances between 10 cities in the US.
§Usage:
eurodist UScitiesD
§Format:
‘dist’ objects based on 21 and 10 objects, respectively. (You must have the ‘stats’ package loaded to have the methods for this kind of object available).
§Source:
Crystal, D. Ed. (1990) The Cambridge Encyclopaedia. Cambridge: Cambridge University Press,
The US cities distances were provided by Pierre Legendre.