eblondel / geometa

R tools to write, read & validate geographic metadata (OGC/ISO 19110, 19115, 19119, 19136 and 19139)

Hi there 👋

• I'm a Senior Geospatial Information Systems engineer and R Lead Expert for the Food and Agriculture Organization for the United Nations (UN-FAO) - Fisheries & Aquaculture Division, and as freelance consultant/developer
• 🗺️ I'm interested in geospatial data sharing, software and standards in particular ISO/OGC standards
• I participate in various community development & standardization activities in support of Fisheries data interoperability at fdiwg
• I'm actively participating to the R spatial community, especially dealing with handling data and metadata with international standards, geospatial data workflows automation in relation with OGC web-services in support to FAIR data principles implementation
• I'm lead developer of the OpenFairViewer ISO/OGC metadata driven web viewer in support of open geospatial science and FAIR data principles

geometa's Issues

Support of MD_CoverageDescription

• Support of RecordType – #44
• Support of MD_CoverageContentType – #45
• Support of MD_RangeDimension – #46
• Support of MD_Band – #47
• Support of MD_CoverageDescription – present ticket

Support of MD_RepresentativeFraction

http://www.datypic.com/sc/niem21/e-gmd_MD_RepresentativeFraction.html

Support of FeatureAttribute

• Support of TypeName – #31
• Support of FC_ListedValue – #33
• Support of GML units elements – #55
• Support of FeatureAttribute – present ticket

Support of MemberName

Support of MD_GridSpatialRepresentation

ISO 19115:2003 Section A.2.6 Spatial representation information p.26

• MD_CellGeometryCode class (missing) – #7
• MD_Dimension class (missing) – #8
• MD_GridSpatialRepresentation class – present ticket

Support for FeatureCatalogue

• Support of FeatureType – #22
• Support DefinitionSource – #23
• Support of FeatureCatalogue

Support of Distance class

Support for FeatureAssociation

Support of FC_Constraint

Support of DefinitionReference

ISO 1939 XML validation for ISO 19115 metadata

A mechanism should be put in place to validate metadata. Each subclass of ISOMetadataElement should implement a validate or isValid method that should implement the metadata validation rules specified by the standards:

• A first systemic way to implement metadata validation rules is to rely on XML schemas provided with ISO/TS 19139:2007 specification (XML Encoding). In R, the function xmlSchemaValidate from XML package allows to validate xml document vs. schemas. Validation would then be triggered once metadata is encoded to XML.

Metadata validation may be set as option to TRUE by default, FALSE would deactivate the validation. Invalid metadata is not necessarily blocking. This maybe left to user. If not blocking, geometa will report a warning log. If blocking a stop will be called.

Support of MD_Band

• Support of GML Units elements – #55

Support of MD_Dimension

Implementation tasks:

• MD_DimensionNameTypeCode – #10
• Measure – #11
• Length – #12
• Distance – #13
• Angle – #14
• Scale – #15
• MD_Dimension – present ticket

Support of EX_BoundingPolygon

Support of MD_ImageDescription

Extends MD_CoverageDescription

Support of DefinitionSource

Support of FC_PropertyType

• Support of MultiplicityRange – #26
• Support of FC_DefinitionReference – #34
• Support of FC_Constraint – #35
• Support of PropertyType – present ticket

Support other uoms than UomLength

• UomAngle,
• UomArea,
• UomCurrency,
• UomTime,
• UomVelocity,
• UomVolume,
• UomWeight

Support of Length class

Support of LI_ProcessStep

ISO 19115:2003 Section A.2.4.2 Lineage information p. 23

Support for FC_FeatureType

• Support of LocalName – #24
• Support of PropertType – #25
• Support of FeatureAttribute – #28
• Support of FeatureOperation – #29
• Support of FeatureType – present ticket

Support of Scale class

GML geometric primitive classes

Extend encoding/decoding mechanism to support matrices of coordinates

Additional Classes

• AbstractGeometry (supported in geometa 0.3)
• AbstractGeometricPrimitive (supported in geometa 0.3)
• Point (supported in geometa 0.3)
• AbstractCurve (supported in geometa 0.3)
• LineString (supported in geometa 0.3)
• CompositeCurve
• Curve
• OrientableCurve
• AbstractSurface (supported in geometa 0.3)
• Polygon (supported in geometa 0.3)
• CompositeSurface
• Surface
• PolyhedralSurface
• TriangulatedSurface
• Tin
• OrientableSurface
• AbstractSolid
• CompositeSolid
• Solid

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Support of FC_Binding

Support of FC_RoleType codelist

How to?

MD_Georectified

Requires support of GM_Point (gml:Point) quid how to do that in R. A good idea would be to rely on rgdal GML driver, but its focus is on feature collections, not raw geometry formats. Exactly the same issue as for EX_BoundingPolygon which requires GM_Object

Support of UnlimitedInteger

Support of LocalName

Support of MD_CellGeometryCode

Add references to ISO standard number:year in each Rdoc

Support of MultiplicityRange

• Support of UnlimitedInteger – #27
• Support of MultiplicityRange – present ticket

Support of FC_BoundFeatureAttribute

Support of Measure class

Support of MD_DimensionNameTypeCode class

Support of RecordType

Support of MD_RangeDimension

• Support of MemberName – #47
• Support of MD_RangeDimension – present ticket

Add abstract class MD_ContentInformation

Add abstract class MD_ContentInformation. Subclasses such as MD_FeatureCatalogueDescription #41 should extent it, from a ISO standard viewpoint.

Support of MD_CoverageContentType

Support of FC_AssociationRole & FC_BoundAssociationRole

• Support for FC_RoleType – #37
• Support for FeatureAssociation – #36

Support of FC_ListedValue

Support of MD_FeatureCatalogueDescription

Support of LI_Source

ISO 19115:2003 Section A.2.4.2 Lineage information p. 23

Support of Angle class

Support of FC_InheritanceRelation

Support of MD_Georeferenceable

• Support for ISORecord – #19
• Support of MD_Georeferenceable – present ticket

Support for Record

Support of FC_FeatureOperation

• Support of MultiplicityRange – #26
• Support of Multiplicity – #59

Support of TypeName

Support of custom print function for ISO* classes

Publish geometa 0.1-0 in CRAN