units (version 0.7-2)

load_units_xml: Load a unit system

Description

Load an XML database containing a unit system compatible with UDUNITS2.

Usage

load_units_xml(path = default_units_xml())

Arguments

path

a path to a valid unit system in XML format.

Details

A unit system comprises a root <unit-system> and a number of children defining prefixes (<prefix>) or units (<unit>). See the contents of

system.file("share/udunits", package="units")

for examples.

Examples

# NOT RUN {
# load a new unit system
load_units_xml(system.file("share/udunits/udunits2-base.xml", package="units"))
# }
# NOT RUN {
set_units(1, rad) # doesn'twork
# }
# NOT RUN {
# reload the default unit system
load_units_xml()
set_units(1, rad) # works again

# }