SchemaStatisticalVariable class

SchemaStatisticalVariable represents any type of statistical metric that can be measured at a place and time. The usage pattern for SchemaStatisticalVariable is typically expressed using SchemaObservation with an explicit SchemapopulationType, which is a type, typically drawn from Schema.org. Each SchemaStatisticalVariable is marked as a SchemaConstraintNode, meaning that some properties (those listed using SchemaconstraintProperty) serve in this setting solely to define the statistical variable rather than literally describe a specific person, place or thing. For example, a SchemaStatisticalVariable Median_Height_Person_Female representing the median height of women, could be written as follows: the population type is SchemaPerson; the measuredProperty Schemaheight; the SchemastatType Schemamedian; the Schemagender SchemaFemale. It is important to note that there are many kinds of scientific quantitative observation which are not fully, perfectly or unambiguously described following this pattern, or with solely Schema.org terminology. The approach taken here is designed to allow partial, incremental or minimal description of SchemaStatisticalVariables, and the use of detailed sets of entity and property IDs from external repositories. The SchemameasurementMethod, SchemaunitCode and SchemaunitText properties can also be used to clarify the specific nature and notation of an observed measurement. See https://schema.org/StatisticalVariable

Inheritance

Constructors

SchemaStatisticalVariable({String? additionalType, String? alternateName, dynamic constraintProperty, dynamic description, String? disambiguatingDescription, dynamic identifier, dynamic image, dynamic mainEntityOfPage, String? name, int? numConstraints, dynamic owner, SchemaAction? potentialAction, String? sameAs, dynamic subjectOf, String? url, SchemaProperty? measuredProperty, SchemaStatisticalVariable? measurementDenominator, dynamic measurementMethod, SchemaEnumeration? measurementQualifier, dynamic measurementTechnique, SchemaClass? populationType, dynamic statType})
Create a new instance of SchemaStatisticalVariable

Properties

additionalType ↔ String?
An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. Typically the value is a URI-identified RDF class, and in this case corresponds to the use of rdf:type in RDF. Text values can be used sparingly, for cases where useful information can be added without their being an appropriate schema to reference. In the case of text values, the class label should follow the schema.org style guide.
getter/setter pairinherited
alternateName ↔ String?
An alias for the item.
getter/setter pairinherited
constraintProperty ↔ dynamic
Indicates a property used as a constraint. For example, in the definition of a SchemaStatisticalVariable. The value is a property, either from within Schema.org or from other compatible (e.g. RDF) systems such as DataCommons.org or Wikidata.org.
getter/setter pairinherited
description ↔ dynamic
A description of the item.
getter/setter pairinherited
disambiguatingDescription ↔ String?
A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
identifier ↔ dynamic
The identifier property represents any kind of identifier for any kind of SchemaThing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.
getter/setter pairinherited
image ↔ dynamic
An image of the item. This can be a SchemaURL or a fully described SchemaImageObject.
getter/setter pairinherited
mainEntityOfPage ↔ dynamic
Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details.
getter/setter pairinherited
measuredProperty ↔ SchemaProperty?
The measuredProperty of an SchemaObservation, typically via its SchemaStatisticalVariable. There are various kinds of applicable SchemaProperty: a schema.org property, a property from other RDF-compatible systems, e.g. W3C RDF Data Cube, Data Commons, Wikidata, or schema.org extensions such as GS1's.
getter/setter pair
measurementDenominator ↔ SchemaStatisticalVariable?
Identifies the denominator variable when an observation represents a ratio or percentage.
getter/setter pair
measurementMethod ↔ dynamic
A subproperty of SchemameasurementTechnique that can be used for specifying specific methods, in particular via SchemaMeasurementMethodEnum.
getter/setter pair
measurementQualifier ↔ SchemaEnumeration?
Provides additional qualification to an observation. For example, a GDP observation measures the Nominal value.
getter/setter pair
measurementTechnique ↔ dynamic
A technique, method or technology used in an SchemaObservation, SchemaStatisticalVariable or SchemaDataset (or SchemaDataDownload, SchemaDataCatalog), corresponding to the method used for measuring the corresponding variable(s) (for datasets, described using SchemavariableMeasured; for SchemaObservation, a SchemaStatisticalVariable). Often but not necessarily each SchemavariableMeasured will have an explicit representation as (or mapping to) an property such as those defined in Schema.org, or other RDF vocabularies and "knowledge graphs". In that case the subproperty of SchemavariableMeasured called SchemameasuredProperty is applicable. The SchemameasurementTechnique property helps when extra clarification is needed about how a SchemameasuredProperty was measured. This is oriented towards scientific and scholarly dataset publication but may have broader applicability; it is not intended as a full representation of measurement, but can often serve as a high level summary for dataset discovery.
getter/setter pair
name ↔ String?
The name of the item.
getter/setter pairinherited
numConstraints ↔ int?
Indicates the number of constraints property values defined for a particular SchemaConstraintNode such as SchemaStatisticalVariable. This helps applications understand if they have access to a sufficiently complete description of a SchemaStatisticalVariable or other construct that is defined using properties on template-style nodes.
getter/setter pairinherited
owner ↔ dynamic
A person or organization who owns this Thing.
getter/setter pairinherited
populationType ↔ SchemaClass?
Indicates the populationType common to all members of a SchemaStatisticalPopulation or all cases within the scope of a SchemaStatisticalVariable.
getter/setter pair
potentialAction ↔ SchemaAction?
Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
getter/setter pairinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sameAs ↔ String?
URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
getter/setter pairinherited
statType ↔ dynamic
Indicates the kind of statistic represented by a SchemaStatisticalVariable, e.g. mean, count etc. The value of statType is a property, either from within Schema.org (e.g. Schemamedian, SchemamarginOfError, SchemamaxValue, SchemaminValue) or from other compatible (e.g. RDF) systems such as DataCommons.org or Wikidata.org.
getter/setter pair
subjectOf ↔ dynamic
A CreativeWork or Event about this Thing.
getter/setter pairinherited
url ↔ String?
URL of the item.
getter/setter pairinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJsonLd() → Map<String, dynamic>
Serialize SchemaStatisticalVariable to JSON-LD
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited