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"Quantity" (Interpreter Type)

Natural-language quantity with units.

Details

  • "Quantity" can be used in Interpreter and related constructs, including deployed smart form fields.
  • Use of "Quantity" requires connectivity to the Wolfram Cloud.

Allowed Forms

  • All the natural-language numbers allowed by "SemanticNumber" are supported for the quantity magnitude.
  • Examples of unit specifications include:
  • one dimenatural-language units
    8.9 hours per day/personcompound units
    30 °Cunit abbreviations and symbols
    10 milespostfix units
    $99.99prefix units

Restriction Specifications

Interpretation

Examples

Basic Examples  (3)

Interpret quantities of any kind:

Wolfram Language code: Interpreter["Quantity"]["2 pounds"]
Wolfram Language code: Interpreter["Quantity"]["65 miles/hr"]
Wolfram Language code: Interpreter["Quantity"]["1000 Canadian dollars"]

Interpret quantities in natural language:

Wolfram Language code: Interpreter["Quantity"]["a half year"]
Wolfram Language code: Interpreter["Quantity"]["one grand"]

Restrict and convert to a unit:

Wolfram Language code: Interpreter[Restricted["Quantity", "Euro"]]["$1000"]

Restrict in an interval:

Wolfram Language code: Interpreter[Restricted["Quantity", "Kilometer", {1, 100}]]["20 miles"]

Restrict to a given physical quantity:

Wolfram Language code: Interpreter[Restricted["Quantity", QuantityVariable["Time"]]][{"20 km", "1.5 hr"}]
Wolfram Language code: Interpreter[QuantityVariable["Age"]]["10 years"]

Accept unitless inputs in the presence of an appropriate restriction:

Wolfram Language code: Interpreter[Restricted[QuantityVariable["Money"]]]["100"]
Wolfram Language code: Interpreter[Restricted["Quantity", "Hours"]]["five"]

Set the precision:

Wolfram Language code: Interpreter[Restricted["Quantity", Automatic, Automatic, 3]]["1.2345 m"]