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INSPIRE WCS: From Mystery to Mastery Peter Baumann Jacobs University | rasdaman GmbH Jordi Escriu Institut Cartogràfic i Geològic de Catalunya, INSPIRE Thematic Cluster #3 Facilitator [gamingfeeds.com] INSPIRE WCS :: © 2017 Peter Baumann Datacube Research @ Jacobs U . Large-Scale Scientific Information Systems research group • focus: large-scale n-D raster services & beyond • www.jacobs-university.de/lsis . Spin-off: rasdaman GmbH . Main visible results: • pioneer Array DBMS, rasdaman • Big Data standards INSPIRE WCS :: © 2017 Peter Baumann INSPIRE WCS :: © 2017 Peter Baumann Learning Objectives . This seminar will explain: - The coverage data model shared by OGC and ISO - OGC’s coverage service model: WCS, WCPS - OGC, ISO, and INSPIRE . By the end of the day, you should be able to - Understand principles of coverage data, service, and clients - Understand differences between service functionality of WMS, WFS, WCS - Understand how coverage services provide analysis-ready data - Understand how common Annex II and III data can be modelled as coverage - Understand how coverages can be orchestrated in overall service ecosystem - Express core coverage retrieval tasks as WCS requests . Prerequisites - Basics of Web services & GIS INSPIRE WCS :: © 2017 Peter Baumann Overview . Introduction . The data: Coverages . The service: WCS . Conformance Testing . Selected Applications . Conclusion INSPIRE WCS :: © 2017 Peter Baumann6 Overview . Introduction . The data: Coverages . The service: WCS . Conformance Testing . Selected Applications . Conclusion INSPIRE WCS :: © 2017 Peter Baumann7 Why Standards? [www.jhchoppers.com] INSPIRE WCS :: © 2017 Peter Baumann Facing the Coverage Tsunami sensor feeds [OGC SWE] coverage server INSPIRE WCS :: © 2017 Peter Baumann9 Taming the Coverage Tsunami sensor feeds [OGC SWE] coverage server INSPIRE WCS :: © 2017 Peter Baumann10 Serving Coverages . SWE SOS: upstream . CIS & WCS: downstream data capturing access & analytics SOS WCS coverage server INSPIRE WCS :: © 2017 Peter Baumann EarthServer: Datacubes At Your Fingertips . Agile Analytics on x/y/t + x/y/z/t Earth & Planetary datacubes - Rigorously standards: OGC WMS + WCS + WCPS - EU rasdaman + US NASA WorldWind - 700+ TB 1+ PB . Intercontinental initiative, 3+3 years: EU + US + AUS . www.earthserver.eu, www.planetserver.eu INSPIRE WCS :: © 2017 Peter Baumann MEA: Daily Sentinel 2A Availability INSPIRE WCS :: © 2017 Peter Baumann MEA: Sample Datacubes Coverages INSPIRE WCS :: © 2017 Peter Baumann MEA: NDVI Timeseries Extraction INSPIRE WCS :: © 2017 Peter Baumann MEA: Daily Hydro Estimator INSPIRE WCS :: © 2017 Peter Baumann ECMWF: River Discharge INSPIRE WCS :: © 2017 Peter Baumann MEA: Land Surface Temperature, Cloudfree INSPIRE WCS :: © 2017 Peter Baumann Coverages in INSPIRE . Jordi Escriu, INSPIRE Thematic Cluster #3 Facilitator INSPIRE WCS :: © 2017 Peter Baumann Overview . Introduction . The data: Coverages . The service: WCS . Conformance Testing . Selected Applications . Conclusion INSPIRE WCS :: © 2017 Peter Baumann22 Features & Coverages . The basis of all: geographic feature . Special kind of feature: coverage - aka space-time varying phenomenon - regular & irregular grids, point clouds, meshes • Usually, coverages are Big Geo Data INSPIRE WCS :: © 2017 Peter Baumann Coverages - abstract: OGC Abstract Topic 6 = ISO 19123 - concrete, interoperable: Coverage Implementation Schema ISO 19123-2 • (CIS, aka GMLCOV) «FeatureType» Abstract Coverage MultiSolid Grid Coverage CIS 1.1 Coverage MultiSurface Rectified Coverage GeneralGridCoverage Grid Coverage MultiCurve Referenceable Coverage GridCoverage MultiPoint Coverage INSPIRE WCS :: © 2017 Peter Baumann Coverages - abstract: OGC Abstract Topic 6 = ISO 19123 - concrete, interoperable: Coverage Implementation Schema ISO 19123-2 • (CIS, aka GMLCOV) Abstract Coverage MultiSolid Coverage MultiSurface Coverage MultiCurve General Grid Coverage Coverage MultiPoint Coverage general meshes point clouds regular & irregular grids INSPIRE WCS :: © 2017 Peter Baumann Coverage Definition Coverage Implementation Schema «Feature Type» GML::Feature «Feature Type» Coverage 0..1 metadata domainSet rangeType rangeSet «Data Type» «Data Type» «Data Type» DomainSet SWE Common::DataRecord RangeSet from SWE Common [OGC 09-146r6] INSPIRE WCS :: © 2017 Peter Baumann INSPIRE WCS :: © 2017 Peter Baumann INSPIRE WCS :: © 2017 Peter Baumann The Integrated Geo Warehouse . Comprehensive geophysics data mgmt . Integrating 3D data + meta data +time 1D 2D nD 3D [GFZ Potsdam] INSPIRE WCS :: © 2017 Peter Baumann Coverage Coordinates and CRSs . Uniform handling of horizontal space, height, time, etc. Native CRS = CRS of coverage - srsName attribute in DomainSet, auxiliary attributes accordingly . Ex: <gmlcov:GridCoverage … gml:id="C0001"> <gml:boundedBy> <gml:Envelope srsName=" http://www.opengis.net/def/crs-compound? 1=http://www.opengis.net/def/crs/EPSG/0/4326& 2=http://www.opengis.net/def/crs/OGC/0/ansiDate“ axisLabels="Lat Long Time" uomLabels="deg deg day" srsDimension=“3"> <gml:lowerCorner>1 1 2012-03-10</gml:lowerCorner> <gml:upperCorner>3 10 2012-03-10 </gml:upperCorner> </gml:Envelope> </gml:boundedBy> … </gmlcov:GridCoverage > INSPIRE WCS :: © 2017 Peter Baumann Grid Types Axis Types . CIS 1.0 (from GML): coverage classification by grid type - GridCoverage, RectifiedGridCoverage, ReferenceableGridCoverage - non-intuitive, hard to describe, missing cases . CIS 1.1 approach: axis types - Index axis: not georeferenced, Index CRS - Regular axis: georeferenced, constant spacing - Irregular axis: georeferenced, variable spacing - Displacement axis nest: georeferenced, arbitrary grid point locations - Algorithmic coordinates: such as sensor model - All combinations possible . Further integrating GML 3.3 and SensorML grids INSPIRE WCS :: © 2017 Peter Baumann Interpolation . Often requested: coverage should inform about desirable/allowed interpolations . Approach: optional list of interpolation methods <interpolationRestriction> <allowedInterpolation> http://www.opengis.net/def/interpolation/OGC/0/nearest-neighbor </allowedInterpolation> <allowedInterpolation> http://www.opengis.net/def/interpolation/OGC/0/linear </allowedInterpolation> <interpolationRestriction> . Identifiers defined elsewhere, not hardwired into coverage model INSPIRE WCS :: © 2017 Peter Baumann Adding Metadata To Coverages . Slot „metadata“ for <any> kind of metadata - WCS will deliver without knowing contents . Inverse possible, too - metadata record contains (or links) coverage INSPIRE WCS :: © 2017 Peter Baumann A Simple Coverage, in GML INSPIRE WCS :: © 2017 Peter Baumann A Simple Coverage, in JSON { "type": "CoverageByDomainAndRangeType", "domainSet":{ "type": "DomainSetType", "generalGrid":{ "type": "GeneralGridCoverageType", "srsName": "http://www.opengis.net/def/crs/OGC/0/Index2D", "axisLabels": ["i", "j"], "axis": [{ "type": "IndexAxisType“, "axisLabel": "i", "lowerBound": 0, "upperBound": 2 },{ "type": "IndexAxisType“, "axisLabel": "j", "lowerBound": 0, "upperBound": 2 }] } }, "rangeSet": { "type": "RangeSetType", "dataBlock": { "type": "VDataBlockType", "values": [1,2,3,4,5,6,7,8,9] } }, "rangeType": { "type": "DataRecordType", "field":[{ "type": "QuantityType", "definition": "ogcType:unsignedInt", "uom": { "type": "UnitReference", "code": "10^0“ } }] } } INSPIRE WCS :: © 2017 Peter Baumann A Simple Coverage, in RDF <http://www.opengis.net/cis/1.1/examples/CIS_05_2D> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.opengis.net/cis/1.1/CoverageByDomainAndRangeType> . <http://www.opengis.net/cis/1.1/examples/CIS_05_2D> <http://www.opengis.net/cis/1.1/domainSet> <http://www.opengis.net/cis/1.1/examples/CIS_DS_05_2D> . <http://www.opengis.net/cis/1.1/examples/CIS_DS_05_2D> <http://www.opengis.net/cis/1.1/generalGrid> <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_05_2D> . <http://www.opengis.net/cis/1.1/examples/CIS_DS_05_2D> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.opengis.net/cis/1.1/DomainSetType> . <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_05_2D> <http://www.opengis.net/cis/1.1/axis> <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_I_05_2D> . <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_05_2D> <http://www.opengis.net/cis/1.1/axis> <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_J_05_2D> . <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_05_2D> <http://www.opengis.net/cis/1.1/axisLabels> <http://www.opengis.net/cis/1.1/axisLabels0> . <http://www.opengis.net/cis/1.1/axisLabels0> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first> "i" . <http://www.opengis.net/cis/1.1/axisLabels0> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest> <http://www.opengis.net/cis/1.1/axisLabels1> . <http://www.opengis.net/cis/1.1/axisLabels1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first> "j" . <http://www.opengis.net/cis/1.1/axisLabels1> <http://www.w3.org/1999/02/22-rdf-syntaxINSPIRE-ns#rest> WCS <http://www.w3.org/1999/02/22 :: © 2017 Peter Baumann-rdf -syntax <http://www.opengis.net/cis/1.1/examples/CIS_DS_GG_05_2D> <http://www.opengis.net/cis/1.1/srsName> <http://www.opengis.net/def/c Encoding Coverages Coverage Domain set Range type . Single file encoding: Range set - Informationally complete: GML, JSON, RDF, … App Metadata - Further formats: GeoTIFF, NetCDF, JPEG2000, GRIB, … . Multipart: container( “header” + file1 + file2 + … ) Coverage - Multipart/MIME, zip, GMLJP2, SAFE, GeoPackage, ... Domain set - Collections, tiling, streaming Range type xlink App Metadata NetCDF INSPIRE WCS :: © 2017 Peter Baumann
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    OWS-4 Geodds Mass Market (Formerly Georss) Interoperability Program Report

    OGC 07-004 Open Geospatial Consortium Inc. Date: 2007-05-02 Reference number of this OGC® document: OGC 07-004 Version: 0.0.1 Category: OpenGIS® Discussion Paper Editor: Panagiotis (Peter) A. Vretanos OWS-4 GeoDDS Mass Market (formerly GeoRSS) Interoperability Program Report Copyright notice Copyright © 2007 Open Geospatial Consortium. All Rights Reserved To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ Warning This document is not an OGC Standard. This document is an OGC Discussion Paper and is therefore not an official position of the OGC membership. It is distributed for review and comment. It is subject to change without notice and may not be referred to as an OGC Standard. Further, an OGC Discussion Paper should not be referenced as required or mandatory technology in procurements. Document type: OpenGIS® Discussion Paper Document subtype: Engineering Specification Document stage: Draft Document language: English File name: 07-004.doc OGC 07-004 Contents 1 SCOPE..........................................................................................................................................................1 2 CONFORMANCE........................................................................................................................................1 3 NORMATIVE REFERENCES....................................................................................................................1 4 TERMS AND DEFINITIONS.....................................................................................................................3