vld_term: Validate Term or Term Record

In term: Create, Manipulate and Query Parameter Terms

Validate Term or Term Record

Description

Validates the elements of a term or term_rcrd vector. Use chk_s3_class() to check if an object is a term or term_rcrd.

Usage

vld_term(x, validate = "complete")

vld_term_rcrd(x, validate = "complete")

Arguments

x	The object.
validate	A string specifying the level of the validation. The possible values in order of increasing strictness are 'class', 'valid', 'consistent' and 'complete'.

Details

Internal validity of a term can be checked on three levels:

• "valid" checks that all terms are of the form x, x[#], x[#,#] etc. where x is an identifier and # are positive integers.

• "consistent" checks that all terms are addressed with the same dimensionality; the terms x[1] and x[2,3] are inconsistent.

• "complete" checks that the values span all possible values across all dimensions; if x[3,4] exist, the vector must contain at least 11 more terms to be consistent (x[1,1] to x[1,4], x[2,1] to x[2,4] and x[3,1] to x[3,3]).

Missing values are ignored as are duplicates and order.

Value

A flag indicating whether the condition was met.

Functions

• vld_term_rcrd(): Validate Term Record

See Also

chk_term()

Other valid: valid_term()

Other valid: valid_term()

Examples

# vld_term
vld_term(c("x[2]", "x[1]"))
vld_term(term("x[2]", "x[1]"))

# vld_term_rcrd
vld_term_rcrd(c("x[2]", "x[1]"))
vld_term_rcrd(term_rcrd("x[2]", "x[1]"))

term documentation built on Sept. 29, 2022, 5:14 p.m.