relatable: relatable: Functions for Mapping Key-Value Pairs,...

In domjarkey/relatable: Functions for Mapping Key-Value Pairs, Many-to-Many, One-to-Many, and Many-to-One Relations

Description

The relatable package provides two functions to safely map from a vector of keys to a vector of values, determine properties of a given relation, or ensure a relation conforms to a given type, such as many-to-many, one-to-many, injective, surjective, or bijective. Permits default return values for use similar to a vectorised switch statement, as well as safely handling large vectors, NAs, and duplicate mappings.

Functions

relate

Returns a vector Y = F(X) where F maps each element of input vector X from its position in vector A to its corresponding position in vector B.

relation

Returns a function F that maps each element of input vector X from its position in vector A to its corresponding position in vector B.

See Also

• For a quick introduction to the functions of the package see "Basic Usage" with vignette("relatable-usage") in R or online

• For instructions on how to use the additional arguments of relate and relation see "Relation Types and Restrictions" with vignette{"relatable-restrictions"} in R or online

domjarkey/relatable documentation built on May 23, 2019, 6:02 a.m.