connect NMDIS-China catalogue as ODIS node

[jmckenna]

Summary of status:

• metadata available through CMOC/China : https://www.cmoc-china.cn/
• catalogue: https://www.cmoc-china.cn/pages/commit.html
  • ERDDAP endpoint: http://222.186.3.18:8888/erddap/index.html
  • ISO xml endpoint: http://222.186.3.18:8889/services/xml
    • sample record: http://222.186.3.18:8889/data/Bathymetry%20Data/BATM_NMDIS_2020_Jinli_Seamount/metadata/BATM_NMDIS_2020_Jinli_Seamount.xml

Possible next steps:

• introduce NMDIS team to ODIS' JSON-LD patterns
• work with NMDIS team to help them generate the necessary JSON-LD for their records

[jmckenna]

Updates from today's meeting:

• ERDDAP does have native JSON-LD support
• this service has ERDDAP version 2.16
• NMDIS team to investigate enabling JSON-LD through ERDDAP configuration
• alternatively, there is a way to convert ISO 19139 metadata to JSON-LD through styesheets
  • scripts: https://github.com/iodepo/odis-arch/tree/master/code/notebooks/Mapping/ISO19139mapping
• next meeting we can adapt one ODIS JSON-LD pattern for the CMOC metadata

[jmckenna]

• sample metadata record provided: BATM_NMDIS_2021_Hechi_Knolls_iso19115.xml.zip

[fils]

This looks like a 115/139 flavor. Thought it will not likely work directly, an approach like is found in https://github.com/iodepo/odis-arch/tree/master/code/notebooks/Mapping/ISO19139mapping could be used.

The XsLT there would not work directly, I suspect, but could be used as a guide to make one that does.

There is a notebook to provide an example of using this approach to process the XML/XSLT pair, but any XSLT processing engine should work.

[fils]

@jmckenna got some info from a group I know using ERDAP

There is a way to modify the css, js, of ERDDAP. In this section, https://coastwatch.pfeg.noaa.gov/erddap/download/setup.html#initialSetup, under #3 they talk about erddap2.css I've used that location to set my own css images, and whatever. Then, in the datasets.xml file, you can modify the HTML head with this tag <startHeadHtml5>. Details here: https://coastwatch.pfeg.noaa.gov/erddap/download/setupDatasetsXml.html#standardText

[jmckenna]

updates from today:

• NMDIS team has configured ERDDAP for JSON-LD support
  • see "M" links on http://222.186.3.18:8888/erddap/info/BATM_NMDIS_2020_Jinli_Seamount/index.html
  • sample layer with embedded JSON-LD: http://222.186.3.18:8888/erddap/info/BATM_NMDIS_2020_Jinli_Seamount/index.html
• some minor issues with the JSON-LD, to be discussed in another issue/ticket
• sitemap also exists: http://222.186.3.18:8888/erddap/sitemap.xml

[jmckenna]

update:

• added note into ODIS Book for a generic encodingFormat for distribution, through https://github.com/iodepo/odis-arch/commit/49c110b31764671716620a0237cc82232cda5c6c
• NMDIS records are live in the front-end search