dplR (version 1.4.9)

tridas.vocabulary: Function to browse and check standard TRiDaS vocabulary

Description

This function can be used to browse the TRiDaS vocabulary by category.

Usage

tridas.vocabulary(category = c("dating type", "measuring method", "shape", "location type", "variable", "unit", "remark", "dating suffix", "presence / absence", "complex presence / absence", "certainty"), idx = NA, term = NA, match.exact = FALSE)

Arguments

category

Vocabulary category as a character vector of length one. One of dating type, measuring method, shape, location type, variable, unit

idx

A numeric vector. Index to the character vector containing the vocabulary of the given category.

term

A character vector. One or more (partial) terms to look for in the given category.

match.exact

A logical value. If TRUE, partial matching of term is not used. Defaults to FALSE.

Value

• In mode 1
  A character vector, same length as in idx
• In mode 2
  A logical value
• In mode 3
  A character vector, same length as in term
• In mode 4
  A character vector

Details

The function has four usage modes:

1. Whenidxis given, returns item numberidxin the givencategory. There may be several numbers inidx, in which case multiple items are returned.
2. Whentermcontains one or more items andmatch.exact==TRUE, checks whether any of the terms is an exact match in the givencategory
3. Whentermcontains one or more items andmatch.exact==FALSE, expands partial matches of the terms in the vocabulary of the givencategory
4. When onlycategoryis given, returns the complete vocabulary in the givencategory

References

TRiDaS - The Tree Ring Data Standard, http://www.tridas.org/

See Also

read.tridas, write.tridas

Examples

## Show all entries in category "measuring method"
tridas.vocabulary(category="measuring")

## Show item number one in category "complex presence / absence"
tridas.vocabulary(category="complex", idx=1)

## Check whether "half section" exists in category "shape"
tridas.vocabulary(category="shape", term="half section", match.exact=TRUE)

## Return unabbreviated matches to several queries in category "remark"
tridas.vocabulary(category="remark", term=c("trauma", "fire", "diffuse"))