NullableArea

Overview

Abstract data type

NullableArea is a simple physical quantity type for the dimension L2. NullableArea is abstract and has two concrete subtypes:

  • an Area is an actual value for a physical quantity with a numerical value and a unit of measurement;

  • a NullArea is a null value that explicitly indicates the absence of an actual physical quantity.

Subtypes

Implementation in Proteus Schema

All data attributes with type NullableArea are implemented as DEXPI generic attributes for physical quantities.

Example

See the examples for Area and NullArea.