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<p class="MsoNormal"><span style="color:#1F497D">Dear Gwen<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">This sounds like an excellent step forward for the C19 vocabulary.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I am curious if you did any investigation as to alternative encodings to GeoJSON, such as using a snippet of JSON-LD and, e.g. the GeoSPARQL vocabulary, or Schema.org? I’m asking as I know there were some issues
with converting GeoJSON to Linked Data – although these may have been resolved now. If the NVS will be able to handle direct RDF output of the descriptions soon then it is a moot point, but it would be nice to have a fully machine readable instance of this
information.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I appreciate that this might be at odds with your use case if the intent is to easily add the minimum bounding box of a sea area to, say, a Leaflet map on a web page so maybe it needs a bit of thought.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Happy to discuss this further off the list and work through some examples if it helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Adam<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> sdc-tech-request@listes.seadatanet.org [mailto:sdc-tech-request@listes.seadatanet.org]
<b>On Behalf Of </b>Moncoiffe, Gwenaelle<br>
<b>Sent:</b> Friday 11 October 2019 08:45<br>
<b>To:</b> seavox@mailman.nerc-liv.ac.uk; sdc-tech@seadatanet.org<br>
<b>Subject:</b> [sdc-tech] SeaVox Salt and Fresh water body gazeteer (C19) proposal<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">Dear SeaVox and SDC-tech colleagues,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">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. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">The proposal is as follows:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">#1 Keep the bounding box coordinates as they currently are;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">#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<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">#3 Use geoJSON to structure the information<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">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:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">{<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> "type": "Feature",<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> "bbox": [-10.0, -10.0, 10.0, 10.0],<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> "geometry": {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> "type": "Polygon",<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> "coordinates": [<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> [<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> [-10.0, -10.0],<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> [10.0, -10.0],<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> [10.0, 10.0],<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> [-10.0, 10.0],<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> [-10.0,-10.0]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> ]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> ]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Please let us know if you have any concerns, questions or suggestion to improve this proposal.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Kind regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Gwen.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif"><br>
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