eblondel / geometa

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

geometa

Tools for Reading and Writing ISO/OGC Geographic Metadata

geometa provides facilities to manipulate geographic metadata defined with OGC/ISO 19115 and 19139 (XML) standards, including an API to create in R representations of geographic metadata, as defined in the above standards, and write it to XML, or even to read an XML metadata into R.

Please check the online documentation for more details!

Sponsors

Many thanks to the following organizations that have provided fundings for strenghtening the geometa package:

For geometa sponsoring/funding new developments, enhancements, support requests, please contact me by e-mail

Citation

We thank in advance people that use geometa for citing it in their work / publication(s). For this, please use the citation provided at this link

Metadata standards coverage

Standard	Title	Namespace	Coverage	Supported	Missing
ISO/TC211 19110:2005	Geographic Information - Methodology for feature cataloguing	GFC		17	0
ISO/TC211 19115-1:2003	Geographic Information - Metadata	GMD		132	0
ISO/TC211 19115-2:2009	Geographic Information - Metadata - Part 2: Extensions for imagery and gridded data	GMI		40	0
ISO/TC211 19119:2005	Geographic Information - Service Metadata	SRV		7	12
ISO/TC211 19139:2007	Geographic Metadata XML Schema	GMX		5	62
ISO/TS 19103:2005	Geographic Common extensible markup language	GCO		23	0
GML 3.2.1 (ISO 19136)	Geographic Markup Language	GML		63	106
GML 3.2.1 Coverage (OGC GMLCOV)	OGC GML Coverage Implementation Schema	GMLCOV		2	3
GML 3.3 Referenceable Grid (OGC GML)	OGC GML Referenceable Grid	GMLRGRID		6	0
SWE 2.0	Sensor Web Enablement (SWE) Common Data Model	SWE		19	11

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_FeatureCatalogueDescription

Support of LI_Source

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

Support of MD_RangeDimension

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

Support of MD_ImageDescription

Extends MD_CoverageDescription

Support of FC_FeatureOperation

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

Support of MD_CellGeometryCode

Support of RecordType

Add references to ISO standard number:year in each Rdoc

Support of FC_PropertyType

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

Support of MD_RepresentativeFraction

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

Support of TypeName

Support of MD_Georeferenceable

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

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

---

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

Support of MemberName

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 for FeatureCatalogue

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

Support of Distance class

Support of Measure class

Support of FC_Constraint

Support of MultiplicityRange

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

Support of custom print function for ISO* classes

Support of Length class

Support of Angle class

Support for Record

Support of MD_CoverageContentType

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 FC_AssociationRole & FC_BoundAssociationRole

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

Support of Scale class

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 UnlimitedInteger

Support of DefinitionReference

Support for FeatureAssociation

Support of FC_BoundFeatureAttribute

Support of FC_RoleType codelist

How to?

Support of LocalName

Support of MD_DimensionNameTypeCode class

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 of MD_Dimension

Implementation tasks:

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

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 FC_InheritanceRelation

Support other uoms than UomLength

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

Support of LI_ProcessStep

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

Support of EX_BoundingPolygon

Publish geometa 0.1-0 in CRAN

Support of MD_Band

• Support of GML Units elements – #55

Support of DefinitionSource

Support of FC_Binding