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Note: This tool has experimental status, so its functionality is subject to change at any time.
This tool is a user-oriented search and browse service for the CF standard names, using the vocabulary as loaded into the MMI Ontology Registry and Repository (ORR), and presented by the associated ORR SPARQL endpoint.
It is implemented in Javascript using AngularJS. In its current form, the only external runtime dependency is the SPARQL endpoint. Since this endpoint is CORS-enabled, the CF Browser can be installed even on your local computer.
The tool is currently available at http://mmisw.org/experimental/cfsn, and the examples in the description below use this location.
http://mmisw.org/experimental/cfsn - Displays a table with all standard names. Navigation relies on clicking the displayed standard names and using the search options (see below). The search field at the top of the table applies a global filtering; the search fields in the column headers allow further narrowing of the results.
The field "Page size" changes the maximum number of names to show in the table. Enter the desired number and press Enter. If you enter an empty string or click the "Show all" button, all names that meet the filtering criteria will be displayed.
Navigation by page number is available at the bottom of each page. That section also shows how many terms satisfy the current filter criteria.
As indicated above, there is a field for applying a global filtering, and also individual search fields for each column in the main table.
There are three modes of global search.
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Literal: In this mode the search checks if the given input is an exact substring in any attributes of each term. Example:
http://mmisw.org/experimental/cfsn/#/search/zenith. In Literal mode, the filter results are automatically updated as the field is edited. -
Glob: This mode interprets the standard
*and?characters as denoting "any sequence of characters" and "any single character", respectively. Example:http://mmisw.org/experimental/cfsn/#/search/!g/*modelperforms a "glob" search with input*model. Note that a glob search is matched against the whole contents of each of the attribute cells, so search for *model will only find terms with an attribute ending in '*model'. -
Regex: This mode applies a given regular expression for the filtering. For example:
http://mmisw.org/experimental/cfsn/#/search/!r/^mass_.*_air$- do a "regex" search with input^mass_.*_air$(finds strings that begin 'mass_' and end '_air'). Note that without the anchors ^ or $, a regex will match any part of the attribute string.
In the "Glob" and "Regex" modes, press Enter (or change the search mode) to execute the search.
Whenever you press the Enter key in the main global search field or changing the global search mode, the URL in the browser location field is updated to create the corresponding search URL. This facilitates navigation (based on browser history) and sharing of search links.
Applied against the results of the global filtering as explained above, the individual column search fields at the top of each column allow further refinement of the terms. For these strings, only a literal check against the column contents is performed; if the given input is found as a substring in that attribute, the corresponding term is included.
Individual column search strings are not reflected in the search URL.
http://mmisw.org/experimental/cfsn/#/sea_surface_temperature - Displays the description and canonical units of the particular name ("sea_surface_temperature").
This view also includes URIs of the corresponding vocabulary term in known semantic repositories, along with links to retrieve the term in available formats. Currently, these are the MMI Ontology Registry and Repository, and the NERC Vocabulary Server. Suggestions are welcome for additional repository services to link.
Eventually, this view can also include:
- Mapped terms according to SKOS properties (exactMatch, closeMatch, etc.,), OWL's sameAs property, and others. This will be at the basic level of hyperlinking the found URIs/links; further navigation will be via direct opening of those links and not through this tool.
- Counts of mappings for the term.
Your feedback is welcome. You can create an issue or suggestion for the tool using the Github issues feature. You can also fork this repo and then submit pull requests.