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| − | <multilang>@en|
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| − | == Overview ==
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| − | As part of the [https://www.tbs-sct.gc.ca/pol/doc-eng.aspx?id=28108 Directive on Open Government], the Government of Canada is committed improving its [https://twitter.com/hashtag/opendata?lang=en #OpenData] posture. This OpenSearch API is the latest effort to align the [[Earth Observation Data Management System (EODMS)]] with giants like ESA and their [[https://scihub.copernicus.eu/userguide/OpenSearchAPI Copernicus Data Hub OpenSearch access program]] to improve RADARSAT-1 access
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| − | == Examples ==
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| − | To form a get query it would take the form of:
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| − | <pre>
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| − | https://data.eodms-sgdot.nrcan-rncan.gc.ca/api/dhus/v1/products/Radarsat1/search?q={searchterms}
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| − | </pre>
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| − |
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| − | e.g.:
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| − | <pre>
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| − | https://data.eodms-sgdot.nrcan-rncan.gc.ca/api/dhus/v1/products/Radarsat1/search?q=footprint:Intersects((-130.496,54.672))
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| − | https://data.eodms-sgdot.nrcan-rncan.gc.ca/api/dhus/v1/products/Radarsat1/search?q=beginposition:[2007-08-20T00:49:50Z%20TO%202007-08-22T10:50:50Z]
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| − | </pre>
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| − | The valid search terms right now are:
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| − | <pre>
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| − | producttype which can be SCN,SGF, or SLC for Radarsat-1
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| − | sensoroperationalmode which refers to the beam mnemonic like EH3, F1, W2, SCWB, SCNA etc..
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| − | polarisationmode which is only HH for R1
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| − | ingestiondate
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| − | beginposition
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| − | endposition
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| − | footprint (point and polygon)
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| − | </pre>
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| − |
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| − | The search terms can be used together with AND and OR. There is also support for wildcards, free text searching and other operators:
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| − | <pre>
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| − | Wildcard Description
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| − | * any sequence of zero or more characters
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| − | ? any one character
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| − | </pre>
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| − |
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| − | <pre>
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| − | Operator Description
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| − | AND Narrow search and retrieve records containing all of the words it separates.
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| − | OR Broaden search and retrieve records containing any of the words it separates.
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| − | NOT Narrow search and retrieve records that do not contain the term following it.
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| − | ( ) Group words or phrases when combining Boolean phrases and to show the order in which relationships should be considered.
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| − | </pre>
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| − |
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| − | Heavily modeled after the ESA Data hubs so the following should apply:
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| − | https://colhub.copernicus.eu/userguide/OpenSearchAPI
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| − |
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| − | @fr|
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| − | == Vue d'ensemble ==
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| − | Le gouvernement du Canada s'est engagé à améliorer sa posture #OpenData, et cette nouvelle API est le dernier effort visant à s'aligner sur des géants tels que l'ESA et leur programme d'accès Sentinel afin d'améliorer l'accès à RADARSAT-1.
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| − |
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| − | == Exemples ==
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| − |
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| − | Pour former une requête get, cela prendrait la forme suivante:
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| − | <pre>
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| − | https://data.eodms-sgdot.nrcan-rncan.gc.ca/api/dhus/v1/products/Radarsat1/search?q={searchterms}
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| − | </pre>
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| − |
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| − | Par exemple:
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| − | <pre>
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| − | https://data.eodms-sgdot.nrcan-rncan.gc.ca/api/dhus/v1/products/Radarsat1/search?q=footprint:Intersects((-130.496,54.672))
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| − | https://data.eodms-sgdot.nrcan-rncan.gc.ca/api/dhus/v1/products/Radarsat1/search?q=beginposition:[2007-08-20T00:49:50Z%20TO%202007-08-22T10:50 : 50Z]
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| − | </pre>
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| − |
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| − | Les termes de recherche valides actuellement sont:
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| − | <pre>
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| − | producttype pouvant être SCN, SGF ou SLC pour Radarsat-1
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| − | sensoroperationalmode qui fait référence à la mnémonique du faisceau comme EH3, F1, W2, SCWB, SCNA, etc.
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| − | polarisationmode qui n'est que HH pour R1
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| − | ingestiondate
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| − | beginposition
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| − | endposition
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| − | footprint (point et polygon)
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| − | </pre>
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| − |
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| − | Les termes de recherche peuvent être utilisés avec AND et OR. Il existe également un support pour les caractères génériques, la recherche de texte libre et d'autres opérateurs:
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| − |
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| − | <pre>
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| − | Wildcard Description
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| − |
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| − | * any sequence of zero or more characters
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| − | ? any one character
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| − | </pre>
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| − |
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| − | <pre>
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| − | Operator Description
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| − |
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| − | AND Narrow search and retrieve records containing all of the words it separates.
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| − | OR Broaden search and retrieve records containing any of the words it separates.
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| − | NOT Narrow search and retrieve records that do not contain the term following it.
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| − | ( ) Group words or phrases when combining Boolean phrases and to show the order in which relationships should be considered.
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| − | </pre>
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| − |
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| − | Ainsi, comme indiqué précédemment, il est fortement calqué sur les concentrateurs de données ESA:
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| − | https://colhub.copernicus.eu/userguide/OpenSearchAPI
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| − | </multilang>
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