- From: Dave Reynolds <dave.e.reynolds@gmail.com>
- Date: Wed, 18 Jul 2012 14:18:44 +0100
- To: public-gld-comments@w3.org
Hi Thomas, This is maybe getting off topic for this list but I guess others might find such deployment examples useful ... First, the answer is that there are several ontologies involved in the Environment Agency data. The one you are looking at defines the notion of a BathingWater, particular types of BathingWater and the associated properties. BathingWaters then have associated sampling points where quality measurements are taken. The ontology for describing those sampling points is at: http://location.data.gov.uk/sources/def/SamplingPoint.ttl Then the quality measurements themselves are published as Data Cube DataSets. The DataStructureDefinitions for the cubes and the definitions for the associated properties (including links to the relevant legislation) are all in: http://environment.data.gov.uk/sources/def/bathing-water-quality.ttl But how could you find that out yourself? Linked data is supposed to help you find things like definitions after all. Let's start from one of the end user applications: http://environment.data.gov.uk/lab/bwq-web.html Then pick or search for a place, I chose "Crantock" Bay: http://environment.data.gov.uk/lab/bwq-info.html?_search=cran&site=ukk3106-32100 Now you can see there a table of latest annual and in-season values (plus links to a page of more detailed graphs and tables). At the moment the latest in-season value is showing as being from "13 Jul 2012 13:15:00". If you hover over that date you'll an RDF icon appear showing that you can click on it to get to the data sample for that place at that date time: http://environment.data.gov.uk/data/bathing-water-quality/in-season/sample/point/32100/date/20120713/time/131500/recordDate/20120713 Now we are in the RDF world and can click around the data itself to see how it is structured. From the type field you can see that you are looking at a Data Cube observation. You can also see links to the cube it is in (dataset), to the Bathing Water (bwq_bathing water) being assessed and the associated sample point (bwq_sampling point) where the samples were taken, plus all the quality measurements. Now to see the definitions of those measurements you can again just click on them. For example, picking the first property on the page takes you to: http://environment.data.gov.uk/def/bathing-water-quality/abnormalWeatherException Which then shows you both the ontology entry and the isDefinedBy link which you can click on to get you to the complete vocabulary: http://environment.data.gov.uk/sources/def/bathing-water-quality.ttl So this "data you can click on" notion really does work :) As it happens there is also human readable documentation on the data model and the associated API linked off the home page: http://environment.data.gov.uk/lab/doc/api-bwq-reference-v0.2.html Cheers, Dave On 18/07/12 13:26, Thomas Bandholtz wrote: > ok, Dave, I am getting used to it. > But, looking though > http://environment.data.gov.uk/sources/def/bathing-water.ttl > I find no link to http://purl.org/linked-data/cube# > How is that done? > > Best, > Thomas > > Am 18.07.2012 12:23, schrieb Dave Reynolds: >> Hi Thomas, >> >> As far as I can tell it is all published correctly but if there's any >> problems we can get them fixed. >> >> def-bw is a prefix bound to the URI : >> http://environment.data.gov.uk/def/bathing-water/ >> >> If I point a browser at: >> http://environment.data.gov.uk/def/bathing-water/sedimentTypesPresent >> >> I get to a definition of sedimentTypesPresent. >> >> That has an rdfs:isDefinedBy link to: >> >> http://environment.data.gov.uk/sources/def/bathing-water.ttl >> >> Which includes the definition. >> >> Dave >> >> On 18/07/12 10:52, Thomas Bandholtz wrote: >>> Hi John, >>> >>> I wasn't aware this was Data Cubes. >>> >>> I wonder about your cube model in RDF. >>> F.e. I see a property def-bw:sedimentTypesPresent, but looking up this >>> namespace (def-bw:) I do not find anything about sedimentTypesPresent. >>> Am I blind? >>> >>> Best regards, >>> Thomas >>> >>> Am 18.07.2012 11:03, schrieb John Goodwin: >>>> Hi Thomas, >>>> >>>> I take it you have seen the work from the Environment Agency of England >>>> & Wales? >>>> >>>> http://environment.data.gov.uk/lab/ >>>> >>>> they use the data cube ontology. >>>> >>>> A write up here: >>>> >>>> http://data.gov.uk/blog/bathing-water-quality-as-linked-data >>>> >>>> John >>>> >>>> Dr John Goodwin >>>> >>>> >>>> Senior Research Scientist >>>> Research, Ordnance Survey >>>> Adanac Drive, SOUTHAMPTON, United Kingdom, SO16 0AS >>>> Phone: +44 (0) 23 8005 5761 >>>> www.ordnancesurvey.co.uk | john.goodwin@ordnancesurvey.co.uk >>>> Please consider your environmental responsibility before printing this >>>> email. >>>> >>>>> -----Original Message----- >>>>> From: Thomas Bandholtz [mailto:thomas.bandholtz@innoq.com] >>>>> Sent: 18 July 2012 09:50 >>>>> To: public-gld-comments@w3.org >>>>> Subject: Data Cubes RDF Schema >>>>> >>>>> Hi, >>>>> >>>>> we finally have a little R&D project by the Federal Environment Agency >>>>> to implement Linked Environment Data in Germany. >>>>> We plan to use Data Cubes as one of several standards. >>>>> Looking for the RDF Schema I find >>>>> http://publishing-statistical- >>>>> data.googlecode.com/svn/trunk/specs/src/main/vocab/cube.[ttl|rdf], >>>>> last modified 2010-11-27. Is this still valid? >>>>> >>>>> Best regards, >>>>> Thomas >>>>> >>>>> -- >>>>> Thomas Bandholtz >>>>> Principal Consultant >>>>> >>>>> innoQ Deutschland GmbH >>>>> Krischerstr. 100, >>>>> D-40789 Monheim am Rhein, Germany >>>>> http://www.innoq.com >>>>> thomas.bandholtz@innoq.com >>>>> +49 178 4049387 >>>>> >>>>> http://innoq.com/de/themen/linked-data >>>>> >>>> This email is only intended for the person to whom it is addressed >>>> and may contain confidential information. If you have received this >>>> email in error, please notify the sender and delete this email which >>>> must not be copied, distributed or disclosed to any other person. >>>> >>>> Unless stated otherwise, the contents of this email are personal to >>>> the writer and do not represent the official view of Ordnance >>>> Survey. Nor can any contract be formed on Ordnance Survey's behalf >>>> via email. We reserve the right to monitor emails and attachments >>>> without prior notice. >>>> >>>> Thank you for your cooperation. >>>> >>>> Ordnance Survey >>>> Adanac Drive >>>> Southampton SO16 0AS >>>> Tel: 08456 050505 >>>> http://www.ordnancesurvey.co.uk >>>> >>>> >>>> >>>> >>> >>> >> >> >> > >
Received on Wednesday, 18 July 2012 13:19:22 UTC