list units in a system of units - Maple Help

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Units[GetSystem] - list units in a system of units

Calling Sequence

GetSystem(system)

Parameters

system

-

symbol; system name

Description

• 

The function GetSystem(system) returns all units in a system of units.

• 

For an existing system system, the call AddSystem(system, GetSystem(system)) recreates an equivalent system. The calling sequence AddSystem(system, check, GetSystem(system), new_unit) redefines the system by including new_unit and ensuring that new_unit does not have the same dimension as any of the existing units in system.

Examples

withUnits:

GetSystem'CGS'

centimeterSI2,galstandard,kelvinSI,baryestandard,gramSI,centimeterSI3,centimeterSI,ergstandardsecondSI,ergstandard,kynestandard,secondSI,dynestandardcentimeterSIradius,radianSI,dynestandard,steradianSI,dollarUS

(1)

AddSystem'FHF','check','furlong','hundredweightlong','fortnight'

GetSystem'FHF'

hundredweightlong,furlongstandard,fortnightcontexts:-standard

(2)

Add the ampere to the MKS system of units and rename it the MKSA system.

If infolevel is set to a greater integer (possible settings are 1 through 5), more detailed information about the computation method is displayed.

AddSystem'MKSA',GetSystem'MKS','ampere'

infolevel[Units]:=1:

convert96485.309,'system','electron','MKS'

Error, (in convert/system) cannot represent the given unit in the system `MKS`

convert96485.309,'system','electron','MKSA'

convert/system: converting to the units A*s

1.54586491010-14

(3)

See Also

convert/system, infolevel, Units, Units/Commands, Units/Index, Units/Systems, Units[AddSystem], Units[GetSystems], Units[HasSystem], Units[RemoveSystem], Units[UseSystem], Units[UsingSystem]


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