valid_udunits {units}R Documentation

Get information about valid units

Description

The returned dataframe is constructed at runtime by reading the xml database that powers unit conversion in [package:udunits2]. Inspect this dataframe to determine what inputs are accepted by as_units (and the other functions it powers: make_units , set_units , units<-).

Usage

valid_udunits(quiet = FALSE)

valid_udunits_prefixes(quiet = FALSE)

Arguments

quiet

logical, defaults TRUE to give a message about the location of the udunits database being read.

Details

Any entry listed under symbol , symbol_aliases , name_singular , name_singular_aliases , name_plural , or name_plural_aliases is valid. Additionally, any entry under symbol or symbol_aliases may can also contain a valid prefix, as specified by valid_udunits_prefixes() .

Note, this is primarily intended for interactive use, the exact format of the returned dataframe may change in the future.

Value

a data frame with columns symbol , symbol_aliases , name_singular , name_singular_aliases , name_plural , or name_plural_aliases , def , definition , comment , dimensionless and source_xml

Examples

valid_udunits()
valid_udunits_prefixes()
if(interactive())
  View(valid_udunits())
[Package units version 0.5-1 Index]