OWL representation of ISO 19156 Sampling Features model
type: Vocabulary
type: Ontology
creator: Simon Jonathan David COX CSIRO
description: An OWL representation of the Sampling Features Schema described in clauses 8-10 of ISO 19156:2011 Geographic Information - Observations and Measurements
source: ISO 19156:2011
created: 2012-01-19T00:00:00
has part: Location
has part: Not a sampling feature
has part: Preparation step
has part: Sampling process
has part: Sampling curve
has part: Sampling Feature
has part: Sampling feature collection
has part: Sampling feature complex
has part: Sampling point
has part: Sampling solid
has part: Sampling surface
has part: Spatial sampling feature
has part: Specimen
has part: current location
has part: hosted procedure or instrument
has part: lineage
has part: material class
has part: member sampling feature
has part: sampling feature parameter
has part: positional accuracy
has part: preparation step
has part: process operator
has part: processing details
has part: related observation
has part: related sampling feature
has part: role
has part: sampled feature
has part: sampling feature complex
has part: sampling location
has part: sampling method
has part: sampling time
has part: spatial sampling feature shape
has part: specimen size
has part: specimen type
has part: preparation step time
license: http://creativecommons.org/licenses/by/3.0/
modified: 2013-11-14T00:00:00
preferred namespace prefix: sam
preferred namespace uri: http://def.seegrid.csiro.au/isotc211/iso19156/2011/sampling#
comment: An OWL representation of the Sampling Features Schema described in clauses 8-10 of ISO 19156:2011 Geographic Information - Observations and Measurements. This vocabulary is provisional, pending finalization of ISO 19150-2. NOTE: The URI stem http://def.seegrid.csiro.au/isotc211/ is temporary. The vocabulary is expected to be ultimately published in the domain http://def.isotc211.org/
imports: basic
imports: geometry
imports: temporal
imports: dataquality
imports: observation
prior version: sampling.rdf
version IRI: sampling.rdf

Location
type: Class
comment: Location, expressed as either a spatial object or geographic identifier
union of: Object
union of: GeographicDescription
notation: Location

Not a sampling feature
type: Class
comment: Complement of SamplingFeature
subclass of: AnyFeature
disjoint with: Sampling Feature

Preparation step
type: Class
comment: Discrete stage in specimen-preparation process
comment: In many applications, specimen preparation procedures are applied to the material prior to its use in an observation. The class PreparationStep (Figure 13) shall link an SF_Specimen to an SF_Process that describes a phase of the specimen preparation.
subclass of: Thing
subclass of: Restriction
  max qualified cardinality: 1
  on class: ResponsibleParty
  on property: process operator
subclass of: Restriction
  on class: Object
  on property: preparation step time
  qualified cardinality: 1
subclass of: Restriction
  on class: Sampling process
  on property: processing details
  qualified cardinality: 1
notation: PreparationStep

Sampling process
type: Class
comment: In many applications, specimen preparation procedures are applied to the material prior to its use in an observation. The class PreparationStep (Figure 13) shall link an SF_Specimen to an SF_Process that describes a phase of the specimen preparation.
comment: Process involved in sampling. This may include specimen retrieval or processing, surveying a spatial sampling feature, excavation to provide access to a sampling feature, or any other process whose outcome is a new sampling feature.
subclass of: AnyFeature
subclass of: Not a sampling feature
disjoint with: Process
notation: SF_Process

Sampling curve
type: Class
comment: Spatial sampling feature whose shape is a 1-D manifold (Curve)
subclass of: Spatial sampling feature
subclass of: Restriction
  all values from: Curve
  on property: spatial sampling feature shape
notation: SF_SamplingCurve

Sampling Feature
type: Class
comment: Feature on which observations may be made, that is intended to be representative of a different (usually larger) feature that is not fully accessible for some reason.
comment: Sampling features are artefacts of an observational strategy, and have no significant function outside of their role in the observation process. The physical characteristics of the features themselves are of little interest, except perhaps to the manager of a sampling campaign. EXAMPLE A âstationâ is essentially an identifiable locality where a sensor system or procedure may be deployed and an observation made. In the context of the observation model, it connotes the âworld in the vicinity of the stationâ, so the observed properties relate to the physical medium at the station, and not to any physical artefact such as a mooring, buoy, benchmark, monument, well, etc. NOTE A transient sampling feature, such as a ships-track or flight-line, might be identified and described, but is unlikely to be revisited exactly. A sampling feature is intended to sample some feature-of-interest in an application domain. However, in some cases the identity, and even the exact type, of the sampled feature may not be known when observations are made using the sampling features.
subclass of: AnyFeature
subclass of: Restriction
  max cardinality: 1
  on property: lineage
subclass of: Restriction
  min cardinality: 0
  on property: related observation
subclass of: Restriction
  min cardinality: 0
  on property: sampling feature complex
subclass of: Restriction
  min cardinality: 1
  on property: sampled feature
disjoint with: Not a sampling feature
notation: SF_SamplingFeature

Sampling feature collection
type: Class
comment: Collection of sampling features
comment: The class SF_SamplingFeatureCollection (Figure 9) is an instance of the «metaclass» GF_FeatureType (ISO 19109), which therefore represents a feature type. SF_SamplingFeatureCollection shall support one association.
subclass of: AnyFeature
subclass of: Restriction
  min cardinality: 1
  on property: member sampling feature
notation: SF_SamplingFeatureCollection

Sampling feature complex
type: Class
comment: Sampling features are frequently related to each other, as parts of complexes, through sub-sampling, and in other ways. If present, the association class SamplingFeatureComplex (Figure 9) shall link an SF_SamplingFeature to another SF_SamplingFeature.
comment: Set of sampling features related to each other in a specific and deliberate way.
subclass of: Thing
subclass of: Restriction
  cardinality: 1
  on property: role
subclass of: Restriction
  on class: Sampling Feature
  on property: related sampling feature
  qualified cardinality: 1
notation: SamplingFeatureComplex

Sampling point
type: Class
comment: Spatial sampling feature whose shape is a 0-D manifold (Point)
subclass of: Spatial sampling feature
subclass of: Restriction
  all values from: Point
  on property: spatial sampling feature shape
notation: SF_SamplingPoint

Sampling solid
type: Class
comment: Spatial sampling feature whose shape is a 3-D manifold (Solid)
subclass of: Spatial sampling feature
subclass of: Restriction
  all values from: Solid
  on property: spatial sampling feature shape
notation: SF_SamplingSolid

Sampling surface
type: Class
comment: Spatial sampling feature whose shape is a 2-D manifold (Surface)
subclass of: Spatial sampling feature
subclass of: Restriction
  all values from: Surface
  on property: spatial sampling feature shape
notation: SF_SamplingSurface

Spatial sampling feature
type: Class
comment: Sampling feature whose defining characteristic is that it samples the intended feature by geometric subsetting.
comment: When observations are made to estimate properties of a geospatial feature, in particular where the value of a property varies within the scope of the feature, a spatial sampling feature is used. Depending on accessibility and on the nature of the expected property variation, the sampling feature may be extensive in one, two or three spatial dimensions. Processing and visualization methods are often dependent on the topological dimension of the sampling manifold, so this provides a natural classification system for sampling features. This classification follows common practice in focussing on conventional spatial dimensions. Properties observed on sampling features may be time-dependent, but the temporal axis does not generally contribute to the classification of sampling feature classes. Sampling feature identity is usually less time-dependent than the property value.
subclass of: Sampling Feature
subclass of: Restriction
  cardinality: 1
  on property: spatial sampling feature shape
subclass of: Restriction
  max cardinality: 2
  on property: positional accuracy
subclass of: Restriction
  min cardinality: 0
  on property: hosted procedure or instrument
notation: SF_SpatialSamplingFeature

Specimen
type: Class
comment: A Specimen is a physical sample, obtained for observation(s) normally carried out ex-situ, sometimes in a laboratory.
subclass of: Sampling Feature
subclass of: Restriction
  cardinality: 1
  on property: material class
subclass of: Restriction
  cardinality: 1
  on property: sampling time
subclass of: Restriction
  max cardinality: 1
  on property: current location
subclass of: Restriction
  max cardinality: 1
  on property: sampling location
subclass of: Restriction
  max cardinality: 1
  on property: sampling method
subclass of: Restriction
  max cardinality: 1
  on property: specimen size
subclass of: Restriction
  max cardinality: 1
  on property: specimen type
notation: SF_Specimen

current location
type: ObjectProperty
domain: AnyFeature
range: Location
definition: If present, the attribute currentLocation:Location shall describe the location of a physical specimen. This may be a storage location, such as a shelf in a warehouse or a drawer in a museum. NOTE If a specimen no longer exists, for example, it was destroyed in connection with an observation act, then the currentLocation should be omitted or carry a suitable null indicator.

hosted procedure or instrument
type: ObjectProperty
domain: AnyFeature
range: Process
definition: A common role for a spatial sampling feature is to host instruments or procedures deployed repetitively or permanently. If present, the association Platform shall link the SF_SpatialSamplingFeature to an OM_Process deployed at it. The OM_Process has the role hostedProcedure with respect to the sampling feature.

lineage
type: ObjectProperty
domain: AnyFeature
range: Lineage
definition: If present, the attribute lineage:LI_Lineage shall describe the history and provenance of the SF_SamplingFeature. This might include information relating to the handling of the specimen, or details of the survey procedure of a spatial sampling feature.

material class
type: ObjectProperty
domain: AnyFeature
definition: The attribute materialClass:GenericName shall provide a basic classification of the material type of the specimen. EXAMPLE Soil, water, rock, aqueous, liquid, tissue, vegetation, food.

member sampling feature
type: ObjectProperty
domain: AnyFeature
range: Sampling Feature
definition: The association Collection shall link an SF_SamplingFeatureCollection to member SF_SamplingFeatures.

sampling feature parameter
type: ObjectProperty
domain: AnyFeature
equivalent property: parameter
definition: the attribute parameter:NamedValue shall describe an arbitrary parameter associated with the SF_SamplingFeature. This might be a parameter that qualifies the interaction with the sampled feature, or an environmental parameter associated with the sampling process.

positional accuracy
type: ObjectProperty
domain: AnyFeature
range: PositionalAccuracy
definition: Positioning metadata is commonly associated with sampling features defined in the context of field surveys. If present, positionalAccuracy:DQ_PositionalAccuracy shall describe the accuracy of the positioning of the sampling feature. Up to two instances of the attribute support the independent description of horizontal and vertical accuracy.

preparation step
type: ObjectProperty
domain: AnyFeature
range: Preparation step

process operator
type: ObjectProperty
domain: AnyFeature
definition: the attribute processOperator:CI_ResponsibleParty shall describe the operator of the process involved in the preparation step.

processing details
type: ObjectProperty
domain: AnyFeature
range: Sampling process

related observation
type: ObjectProperty
domain: AnyFeature
range: Observation
definition: Sampling features are distinctive compared with other features from application domains by having navigable associations to observations. If present, the association Design shall link the SF_SamplingFeature to an OM_Observation that was made utilizing the sampling feature, and the description of the sampling feature provides an intrinsic element of the observation protocol, along with the observation procedure (7.2.2) and the decomposition of the domain geometry in the case of a coverage-valued result (8.3.2). The OM_Observation has the role relatedObservation with respect to the sampling feature. Multiple observations may be made on a single sampling feature.

related sampling feature
type: ObjectProperty
domain: AnyFeature
range: Sampling Feature

role
type: ObjectProperty
domain: Thing

sampled feature
type: ObjectProperty
domain: AnyFeature
range: Not a sampling feature
definition: A sampling feature is established in order to make observations concerning some domain feature. The association Intention shall link the SF_SamplingFeature to the feature which the sampling feature was designed to sample. The target of this association has the role sampledFeature with respect to the sampling feature, and shall not be a sampling feature or observation. It is usually a real-world feature from an application domain (Figures 5 and 10). EXAMPLE A profile typically samples a water- or atmospheric-column; a well samples the water in an aquifer; a tissue specimen samples a part of an organism.

sampling feature complex
type: ObjectProperty
domain: AnyFeature
range: Sampling feature complex

sampling location
type: ObjectProperty
domain: AnyFeature
range: Object
definition: If present, the attribute samplingLocation:GM_Object shall describe the location from where the specimen was obtained. NOTE Where a specimen has a relatedSamplingFeature whose location provides an unambiguous location then this attribute is not required. However, if the specific sampling location within the sampledFeature is important, then this attribute supports its description.

sampling method
type: ObjectProperty
domain: AnyFeature
range: Sampling process
definition: If present, the attribute samplingMethod:SF_Process shall describe the method used to obtain the specimen from its sampledFeature.

sampling time
type: ObjectProperty
domain: AnyFeature
range: Object
definition: The attribute samplingTime:TM_Object shall record when the specimen was retrieved from the sampled feature.

spatial sampling feature shape
type: ObjectProperty
domain: AnyFeature
range: Object
definition: The association Geometry shall link an SF_SpatialSamplingFeature to a GM_Object that describes its shape.

specimen size
type: ObjectProperty
domain: AnyFeature
sub property of: measure
definition: the attribute size:Measure shall describe a physical extent of the specimen. This may be length, mass, volume, etc., as appropriate for the specimen instance and its material class.

specimen type
type: ObjectProperty
domain: AnyFeature
definition: the attribute specimenType:GenericName shall describe the basic form of the specimen. EXAMPLE Polished section; core; pulp; solution.

preparation step time
type: ObjectProperty
domain: Thing
range: Object
definition: The attribute time:TM_Object shall describe the time that the SF_Process was applied to the SF_Specimen. It supports ordering of preparation steps.