as.thesaurus: Create a list of trait definitions (a thesaurus of traits)

In traitdataform: Formatting and Harmonizing Ecological Trait-Data

Create a list of trait definitions (a thesaurus of traits)

Description

Create a trait thesaurus object for use as a reference object/lookup table of traits within function standardize.traits().

Usage

as.thesaurus(..., replace = NULL)

Arguments

...	multiple objects of class 'trait' (produced by function as.trait()) or a data.frame containing columns according to the terms provided by https://ecologicaltraitdata.github.io/ETS/#terms-for-thesauri.
replace	named character vector, with new names as values, and old names as names.

Details

the object class 'trait' comprises necessary information to map a trait name to a trait definition, a target unit and a globally unique identifier. The thesaurus will be used in function 'standardize.traits()' to apply unit conversion and factor level harmonization.

Value

a list of formalized objects of class 'trait', as returned by function as.trait().

Examples

# provide traitlist by defining individual traits using function `as.trait()`:

traitlist <- as.thesaurus(body_length = as.trait("body_length", expectedUnit = "mm", 
    valueType = "numeric", 
    identifier = "http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Body_length"), 
  antenna_length = as.trait("antenna_length", expectedUnit = "mm", 
    valueType = "numeric", 
    identifier = "http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Antenna_length"),
  metafemur_length = as.trait("metafemur_length", expectedUnit = "mm", 
    valueType = "numeric", 
    identifier = "http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Femur_length")
)

# provide traitlist from data frame object: 

as.thesaurus(data.frame(
  trait = c("body_length", "antenna_length", "metafemur_length", "eyewidth_corr"),
  expectedUnit = "mm",
  valueType = "numeric",
  traitDescription = c("body length in mm", "length of antenna in mm", 
                              "length of metafemur in mm", "eye width in mm"), 
  identifier = c("http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Body_length", 
    "http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Antenna_length", 
    "http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Femur_length", 
    "http://t-sita.cesab.org/BETSI_vizInfo.jsp?trait=Eye_diameter"
    )
)
)

# provide traitlist from remote archive with renaming  
# (pulls from https://github.com/EcologicalTraitData/TraitDataList)

## Not run: 
traits1 <- as.thesaurus(read.csv("https://git.io/fpsj5"), 
                   replace = c(traitID = "identifier", 
                                  traitName = "trait",
                                  traitUnit = "expectedUnit",
                                  Comments = "comments") 
)

## End(Not run)

traitdataform documentation built on May 25, 2022, 5:07 p.m.