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Added log-intensity and log-power units. #58

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cgranade wants to merge 2 commits into from
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Added log-intensity and log-power units. #58

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2d5ff37
Added log-intensity and log-power units.
cgranade Apr 6, 2013
96b67a3
Fixed problem with string representation.
cgranade Apr 13, 2013
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8 changes: 8 additions & 0 deletions quantities/unitquantity.py
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Original file line number Diff line number Diff line change
Expand Up @@ -382,6 +382,14 @@ class UnitInformation(IrreducibleUnit):
class UnitCurrency(IrreducibleUnit):

_primary_order = 9

class UnitLogIntensity(IrreducibleUnit):

_primary_order = 10

class UnitLogPower(IrreducibleUnit):

_primary_order = 11


class CompoundUnit(UnitQuantity):
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3 changes: 3 additions & 0 deletions quantities/units/__init__.py
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Expand Up @@ -42,6 +42,9 @@
from . import length
from .length import *

from . import logunits
from .logunits import *

from . import mass
from .mass import *

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27 changes: 27 additions & 0 deletions quantities/units/logunits.py
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@@ -0,0 +1,27 @@
"""
"""
from __future__ import absolute_import

from ..unitquantity import UnitLogIntensity, UnitLogPower, UnitQuantity

bel = UnitLogIntensity(
'bel',
symbol='bel'
)
decibel = dB = UnitQuantity(
'decibel',
bel / 10,
'dB'
)

bel_milliwatt = UnitLogPower(
'bel_milliwatt',
symbol='Bm'
)
decibel_milliwatt = dBm = UnitQuantity(
'decibel_milliwatt',
bel_milliwatt / 10,
symbol='dBm'
)

del UnitLogIntensity, UnitLogPower, UnitQuantity