[Seavox] [sdc-tech] SeaVox Salt and Fresh water body gazeteer (C19) proposal

[Ari Lukkarinen]

Hello 

Quick comment about metadata 

Datacite metadata schema is rather widely used in research data services. 
Recent metadatamodels have 
" GeoLocation -> geoLocationPolygon" attribute that is defined as follows: 

A drawn polygon area, defined by a set of points and lines connecting the points in a closed chain. A polygon is delimited by geographic points. Each point is defined by a longitudelatitude pair. The last point should be the same as the first point. P olygon that crosses the anti-meridian (i.e. the 180th meridian) can be represented by cutting it into two polygons such that neither crosses the anti-meridian. 

On metadata harvesting point of view, it would be nice, if your metadata model would be compatible with datacite metadata model. 

For more information, see [ https://schema.datacite.org/ | https://schema.datacite.org ] 

-- 
Ari Lukkarinen, 
CSC - Tieteen tietotekniikan keskus Oy / CSC - IT Center for Science Ltd. 
E-mail: ari.lukkarinen at csc.fi | Tel: +358-9-4572241 | Mob: +358-50-3819720 

----- On 11 Oct, 2019, at 10:45, Moncoiffe, Gwenaelle <gmon at bodc.ac.uk> wrote: 

> Dear SeaVox and SDC-tech colleagues,

> The description field in the SeaVox Salt and Fresh water body gazeteer (C19),
> contains the minimum and maximum latitudes and longitudes that forms the
> bounding box around a sea area. A bounding box is defined as the rectangle
> formed by the maximum lat/lon of the area of interest with its sides drawn
> parallel to the lines of longitude and latitude. While this is can be a useful
> and simple way to locate the extent of the sea area, it can result in areas
> that are much larger than the sea area itself.

> In order to address this shortcoming, we are proposing to add the pair
> coordinates of the minimum area bounding box. This defines a rectangle around
> the area of interest that is not forced to be parallel to the lines of
> longitude and latitude.

> The proposal is as follows:

> #1 Keep the bounding box coordinates as they currently are;

> #2 Add the minimum area bounding box (MABB) as coordinate pairs – this gives a
> rectangle around the sea area that does not have to be parallel to the lines of
> latitude/longitude

> #3 Use geoJSON to structure the information

> Below is our proposed geoJSON structure for the bounding box as min/max lat/lon
> and the minimum area bounding box as pair lat/lon coordinates:

> {

> "type": "Feature",

> "bbox": [-10.0, -10.0, 10.0, 10.0],

> "geometry": {

> "type": "Polygon",

> "coordinates": [

> [

> [-10.0, -10.0],

> [10.0, -10.0],

> [10.0, 10.0],

> [-10.0, 10.0],

> [-10.0,-10.0]

> ]

> ]

> }

> }

> Please let us know if you have any concerns, questions or suggestion to improve
> this proposal.

> Kind regards

> Gwen.

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> previous vote ]
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