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Starting Odysseus Spatial
You can download Odysseus here: http://odysseus.informatik.uni-oldenburg.de/index.php?id=76
When you have downloaded Odysseus, you need to add a few plugins to your installation. Use "Help" → "Install New Software". Choose the predefined update URL and install every package for the following keywords: "spatial", "keyvalue" and "nmea".
Accessing Example Data
For this example, we use vessel AIS data from the San Francisco bay, which is provided by ais.exploratorium.edu (you can open this in a browser and see the raw AIS data). You use this query to access the data. Just create a new Odysseus Script file within Odysseus Studio and run this query (with the "green arrow down"-button). The query does access the raw AIS data, converts it into key-value objects, filters some data, converts it to a tuple and finally uses latitude and longitude data to create an geo-object. The latter can be used by Odysseus for spatial functionality. If you want to see the data, do the following: after running the query, you should see "System.SanFranciscoAIS" in the Sources-view. Right click and choose "Query source" to view the data.
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12|UnderwayUsingEngine|NotAvailable|223|false|218.2|12.9|374128000|20|false|POINT (37.751635 -122.68389166666667)|{"374128000":[{"trajectoryElement":{"movingObjectID":"374128000","geoHash":{"bits":5589500436528045806,"point":{"longitude":-122.68389166666667,"latitude":37.751635},"boundingBox":{"minLat":37.75163498707116,"maxLat":37.75163502898067,"minLon":-122.68389173783362,"maxLon":-122.68389165401459},"significantBits":64},"distanceToPreviousElement":66.39223462250055,"streamElement":{}},"meters":0.0},{"trajectoryElement":{"movingObjectID":"374128000","geoHash":{"bits":5589500440284126512,"point":{"longitude":-122.682585,"latitude":37.75300333333333},"boundingBox":{"minLat":37.75300333276391,"maxLat":37.753003374673426,"minLon":-122.68258508294821,"maxLon":-122.68258499912918},"significantBits":64},"distanceToPreviousElement":64.17029786044263,"streamElement":{}},"meters":190.5932328122322},{"trajectoryElement":{"movingObjectID":"374128000","geoHash":{"bits":5589500441130161997,"point":{"longitude":-122.68214666666667,"latitude":37.753465},"boundingBox":{"minLat":37.75346496608108,"maxLat":37.7534650079906,"minLon":-122.68214670941234,"maxLon":-122.6821466255933},"significantBits":64},"distanceToPreviousElement":63.10852580037621,"streamElement":{}},"meters":254.76334501265032},{"trajectoryElement":{"movingObjectID":"374128000","geoHash":{"bits":5589500439526094378,"point":{"longitude":-122.68342833333334,"latitude":37.75210666666667},"boundingBox":{"minLat":37.75210663676262,"maxLat":37.752106678672135,"minLon":-122.6834283862263,"maxLon":-122.68342830240726},"significantBits":64},"distanceToPreviousElement":59.35999960990177,"streamElement":{}},"meters":66.39223462250055},{"trajectoryElement":{"movingObjectID":"374128000","geoHash":{"bits":5589500439809071195,"point":{"longitude":-122.683025,"latitude":37.752535},"boundingBox":{"minLat":37.7525349939242,"maxLat":37.752535035833716,"minLon":-122.68302504904568,"maxLon":-122.68302496522665},"significantBits":64},"distanceToPreviousElement":64.85054572839009,"streamElement":{}},"meters":125.74570287102185}]} | META | 1488546619406|oo |
Show data on a map
Attention: This step is not available for now when you use the pre-compiled Odysseus version. You can checkout Odysseus via GIT and use this feature that way.
You can visualize the vessels with their trajectories on a map.
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