133 lines
3.8 KiB
YAML
133 lines
3.8 KiB
YAML
id: https://nde.nl/ontology/hc/class/measure-unit
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name: measure_unit_class
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title: MeasureUnit Class
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description: >-
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Class representing a unit of measurement for quantities.
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**RULE 53 COMPLIANT**: Generic class for standardized unit representation,
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used by Area, Quantity, and other measurement classes.
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**ONTOLOGY ALIGNMENT**:
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- QUDT (Quantities, Units, Dimensions and Types)
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- schema:unitCode / schema:unitText
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- OM (Ontology of Units of Measure)
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prefixes:
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linkml: https://w3id.org/linkml/
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hc: https://nde.nl/ontology/hc/
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schema: http://schema.org/
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qudt: http://qudt.org/schema/qudt/
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om: http://www.ontology-of-units-of-measure.org/resource/om-2/
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imports:
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- linkml:types
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- ../enums/MeasureUnitEnum
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- ../slots/has_or_had_label
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default_prefix: hc
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classes:
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MeasureUnit:
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description: >-
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A unit of measurement for expressing quantities.
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Captures the unit type (from MeasureUnitEnum), symbol, and optional
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conversion factors. Used as the range for has_or_had_unit slot.
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**EXAMPLES**:
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- Hectare (ha) for outdoor site area
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- Square meter (m²) for building floor area
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- Linear meter (m) for archival shelf extent
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class_uri: qudt:Unit
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exact_mappings:
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- qudt:Unit
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- om:Unit
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close_mappings:
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- schema:unitCode
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slots:
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- unit_type
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- unit_symbol
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- unit_code
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- has_or_had_label
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slot_usage:
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unit_type:
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description: >-
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The type of unit from MeasureUnitEnum (e.g., HECTARE, SQUARE_METER).
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range: MeasureUnitEnum
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required: true
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unit_symbol:
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description: >-
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The symbol for the unit (e.g., "ha", "m²", "km").
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range: string
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required: false
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examples:
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- value: "ha"
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description: Hectare symbol
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- value: "m²"
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description: Square meter symbol
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- value: "m"
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description: Meter symbol
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unit_code:
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description: >-
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Standard code for the unit (UCUM or QUDT code).
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range: string
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required: false
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examples:
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- value: "har"
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description: UCUM code for hectare
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- value: "m2"
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description: UCUM code for square meter
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has_or_had_label:
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description: >-
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Human-readable label for the unit.
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range: string
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examples:
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- value: "hectare"
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description: Hectare label
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- value: "square meter"
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description: Square meter label
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examples:
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- value:
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unit_type: HECTARE
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unit_symbol: "ha"
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unit_code: "har"
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has_or_had_label: "hectare"
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description: Hectare unit for outdoor site area
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- value:
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unit_type: SQUARE_METER
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unit_symbol: "m²"
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unit_code: "m2"
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has_or_had_label: "square meter"
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description: Square meter unit for building floor area
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- value:
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unit_type: LINEAR_METER
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unit_symbol: "m"
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unit_code: "m"
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has_or_had_label: "linear meter"
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description: Linear meter for archival shelf extent
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annotations:
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custodian_types: '["*"]'
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custodian_types_rationale: >-
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Measurement units applicable to all heritage custodian types.
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specificity_score: 0.3
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specificity_rationale: >-
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Foundational class - highly reusable across many contexts.
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slots:
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unit_type:
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description: >-
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The enumerated type of measurement unit.
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range: MeasureUnitEnum
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slot_uri: qudt:unit
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unit_symbol:
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description: >-
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The symbol representing the unit (e.g., "ha", "m²").
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range: string
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slot_uri: qudt:symbol
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unit_code:
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description: >-
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Standard code for the unit from UCUM or QUDT vocabularies.
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range: string
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slot_uri: qudt:ucumCode
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