Module: UOM
- Defined in:
- lib/uom/measurement.rb,
lib/uom/unit.rb,
lib/uom/error.rb,
lib/uom/units.rb,
lib/uom/factor.rb,
lib/uom/factors.rb,
lib/uom/version.rb,
lib/uom/dimension.rb,
lib/uom/dimensions.rb,
lib/uom/unit_factory.rb,
lib/uom/composite_unit.rb,
lib/uom/composite_unit_key_canonicalizer.rb
Overview
UOM implements Units of Measurement based on the International System of Units. See [github.com/caruby/uom] for details.
Defined Under Namespace
Classes: CompositeDimension, CompositeUnit, CompositeUnitKeyCanonicalizer, Dimension, Factor, Measurement, MeasurementError, Unit, UnitFactory
Constant Summary collapse
- METER =
the standard units for each dimension
Unit.new(:meter, :m, LENGTH, *METRIC_FACTORS)
- GRAM =
Unit.new(:gram, :gm, :g, MASS, *METRIC_FACTORS)
- SECOND =
Unit.new(:second, :sec, :s, TIME, MILLI, MICRO, NANO, PICO, FEMTO)
- KELVIN =
Unit.new(:kelvin, :K, TEMPERATURE)
- CANDELA =
Unit.new(:candela, :cd, INTENSITY)
- AMPERE =
Unit.new(:ampere, :A, CURRENT, *ELECTRONIC_FACTORS)
- MOLE =
Unit.new(:mole, :mol, MASS)
- BYTE =
Scaled byte units, e.g KByte, are defined below
Unit.new(:byte, :Byte, :B, :b, INFORMATION)
- MILLIMETER =
SCALED UNITS ## Just a few common metric units; units are typically referred to by label rather than a constant, e.g.
Unit.for(:millimeter) Unit.for(:millimeter)
- CENTIMETER =
Unit.for(:centimeter)
- DECIMETER =
Unit.for(:decimeter)
- MICROGRAM =
Unit.for(:microgram)
- MILLIGRAM =
Unit.for(:milligram)
- KILOGRAM =
Unit.for(:kilogram)
- KILOBYTE =
The BYTE scale is a base two axis multiplier rather than a metric scalar multipler. TODO - express these with base-2 factors?
Unit.new(:kilobyte, :KByte, :KB, BYTE, 1024)
- MEGABYTE =
Unit.new(:megabyte, :MByte, :MB, KILOBYTE, 1024)
- GIGABYTE =
Unit.new(:gigabyte, :GByte, :GB, MEGABYTE, 1024)
- TERABYTE =
Unit.new(:terabyte, :TByte, :TB, GIGABYTE, 1024)
- PETABYTE =
Unit.new(:petabyte, :PByte, :PB, TERABYTE, 1024)
- ANGSTROM =
astronomical distances
Unit.new(:angstrom, :a, METER, 10000000000)
- AU =
Unit.new(:astronomical_unit, :AU, METER, 149597870691)
- LIGHT_YEAR =
Unit.new(:light_year, :ly, METER, 9460730472580800)
- CELSIUS =
temperature with inverse converters
Unit.new(:celsius, :C, KELVIN) { |celsius| celsius - 273.15 }
- FARENHEIT =
Unit.new(:farenheit, :F, CELSIUS) { |farenheit| (farenheit - 32) * (5 / 9) }
- MINUTE =
time
Unit.new(:minute, :min, SECOND, 60)
- HOUR =
Unit.new(:hour, :hr, MINUTE, 60)
- DAY =
Unit.new(:day, HOUR, 24)
- BIT =
information
Unit.new(:bit, BYTE, 1.0 / 8)
- INCH =
US Customary length units
Unit.new(:inch, :in, METER, 0.0254)
- FOOT =
Unit.new(:foot, :ft, INCH, 12)
- YARD =
Unit.new(:yard, :yd, FOOT, 3)
- MILE =
Unit.new(:mile, :mi, FOOT, 5280)
- OUNCE =
US Customary weight units
Unit.new(:ounce, :oz, GRAM, 28.34952)
- POUND =
Unit.new(:pound, :lb, OUNCE, 16)
- TON =
Unit.new(:ton, POUND, 2000)
- GRAIN =
Unit.new(:grain, :gr, POUND, 1.0 / 7000)
- DRAM =
Unit.new(:dram, :dr, OUNCE, 1.0 / 16)
- LITER =
Metric composite units
Unit.new(:liter, :l, :L, DECIMETER * DECIMETER * DECIMETER, *METRIC_FACTORS)
- MILLILITER =
Unit.for(:milliliter)
- JOULE =
Unit.new(:joule, :J, (KILOGRAM * (METER * METER)) / (SECOND * SECOND), *ELECTRONIC_FACTORS)
- ERG =
Unit.new(:erg, (GRAM * (CENTIMETER * CENTIMETER)) / (SECOND * SECOND), *ELECTRONIC_FACTORS)
- DYNE =
Unit.new(:dyne, :dyn, (GRAM * CENTIMETER) / (SECOND * SECOND), *ELECTRONIC_FACTORS)
- NEWTON =
Unit.new(:newton, :N, (KILOGRAM * METER) / (SECOND * SECOND), *SIMPLE_FACTORS)
- BAR =
Unit.new(:bar, NEWTON, 0.00001, *SIMPLE_FACTORS)
- PASCAL =
Unit.new(:pascal, :Pa, NEWTON / (METER * METER), *SIMPLE_FACTORS)
- ATMOSPHERE =
Unit.new(:atmosphere, :atm, PASCAL, 0.101325, *SIMPLE_FACTORS)
- TORR =
Unit.new(:torr, ATMOSPHERE, 1.0 / 760, *SIMPLE_FACTORS)
- BARYE =
Unit.new(:barye, :Ba, GRAM / (CENTIMETER * (SECOND * SECOND)), *ELECTRONIC_FACTORS)
- POISE =
Unit.new(:poise, :P, GRAM / (CENTIMETER * SECOND), KILO, MILLI, MICRO, NANO, PICO)
- COULOMB =
C abbreviation is taken by CENTIGRADE
Unit.new(:coulomb, AMPERE / SECOND, *ELECTRONIC_FACTORS)
- VOLT =
Unit.new(:volt, :V, JOULE / COULOMB, *ELECTRONIC_FACTORS)
- FARAD =
F abbreviation is taken by FARENHEIT
Unit.new(:farad, COULOMB / VOLT, *ELECTRONIC_FACTORS)
- WEBER =
Unit.new(:weber, :Wb, VOLT * SECOND, *ELECTRONIC_FACTORS)
- HENRY =
Unit.new(:henry, :H, WEBER / AMPERE, METRIC_FACTORS)
- MAXWELL =
Unit.new(:maxwell, :Mx, WEBER, 1.0 / 10 ** 8, METRIC_FACTORS)
- GAUSS =
Unit.new(:gauss, :G, MAXWELL / (CENTIMETER * CENTIMETER), METRIC_FACTORS)
- TESLA =
Unit.new(:tesla, :T, WEBER / (METER * METER), DECI, CENTI, MILLI, MICRO, NANO, PICO)
- C =
The speed of light in a vacuum in cm/sec.
29979245800- OHM =
Unit.new(:ohm, SECOND / CENTIMETER, 10 ** 9 / C)
- FLUID_OUNCE =
US Customary liquid volume units
Unit.new(:fluid_ounce, :fl_oz, MILLILITER, 29.57353)
- TBSP =
Unit.new(:tablespoon, :tbsp, FLUID_OUNCE, 2)
- TSP =
Unit.new(:teaspoon, :tsp, TBSP, 1.0 / 3)
- CUP =
Unit.new(:cup, :cp, FLUID_OUNCE, 8)
- PINT =
Unit.new(:pint, :pt, CUP, 2)
- QUART =
Unit.new(:quart, :qt, PINT, 2)
- GALLON =
Unit.new(:gallon, :gal, QUART, 4)
- DRY_PINT =
US Customary dry volume units
Unit.new(:dry_pint, :dry_pt, LITER) { |liter| liter / 0.5506105 }
- DRY_QUART =
Unit.new(:dry_quart, :dry_qt, DRY_PINT, 2)
- DRY_GALLON =
Unit.new(:dry_gallon, :dry_gal, DRY_QUART, 4)
- PECK =
Unit.new(:peck, :pk, DRY_GALLON, 2)
- BUSHEL =
Unit.new(:bushel, :bu, PECK, 4)
- PSI =
Pressure alias
Unit.for(:pounds_per_square_inch).add_abbreviation(:psi)
- UNIT =
the metric scaling factors
Factor.new(nil, nil, nil)
- DECI =
Factor.new(:deci, :d, UNIT, 0.1)
- CENTI =
Factor.new(:centi, :c, UNIT, 0.01)
- MILLI =
Factor.new(:milli, :m, UNIT, 0.001)
- MICRO =
Factor.new(:micro, :u, MILLI, 0.001)
- NANO =
Factor.new(:nano, :n, MICRO, 0.001)
- PICO =
Factor.new(:pico, :p, NANO, 0.001)
- FEMTO =
Factor.new(:femto, :f, PICO, 0.001)
- ATTO =
Factor.new(:atto, :a, FEMTO, 0.001)
- ZEPTO =
Factor.new(:zepto, :z, ATTO, 0.001)
- YOCTO =
Factor.new(:yocto, :y, ZEPTO, 0.001)
- DECA =
Factor.new(:deca, :da, UNIT, 10)
- HECTO =
Factor.new(:hecto, :h, UNIT, 100)
- KILO =
Factor.new(:kilo, :k, UNIT, 1000)
- MEGA =
Factor.new(:mega, :M, KILO, 1000)
- GIGA =
Factor.new(:giga, :G, MEGA, 1000)
- TERA =
Factor.new(:tera, :T, GIGA, 1000)
- PETA =
Factor.new(:peta, :P, TERA, 1000)
- EXA =
Factor.new(:exa, :E, PETA, 1000)
- ZETTA =
Factor.new(:zetta, :Z, EXA, 1000)
- YOTTA =
Factor.new(:yotta, :Y, ZETTA, 1000)
- METRIC_FACTORS =
All metric factors.
[YOTTA, ZETTA, EXA, TERA, GIGA, MEGA, KILO, HECTO, DECA, DECI, CENTI, MILLI, MICRO, NANO, PICO, FEMTO, ATTO, ZEPTO, YOCTO]
- ELECTRONIC_FACTORS =
Factors commonly used in electronics.
[MILLI, MICRO, NANO, PICO, TERA, GIGA, MEGA, KILO]
- SIMPLE_FACTORS =
Factors commonly used for measures in a moderate range about 1.
[CENTI, MILLI, MEGA, KILO]
- VERSION =
"1.2.2"- LENGTH =
Dimension.new(:length)
- MASS =
Dimension.new(:mass)
- TEMPERATURE =
Dimension.new(:temperature)
- TIME =
Dimension.new(:time)
- ENERGY =
Dimension.new(:energy)
- INTENSITY =
Dimension.new(:intensity)
- CURRENT =
Dimension.new(:current)
- INFORMATION =
Dimension.new(:information)