v0.8.0-rc1

[v0.8.0-rc1] - 2019-08-23

Changed

• Updated specification to base on WFS3 draft 2 (OGC API - Features - Part 1: Core, v1.0.0-draft.2). This leads to many changes in the API and one change in STAC collections, notably:
  • The structure of the field extent in STAC and WFS Collections changed.
  • Query parameter time was renamed to datetime and accepts slightly different values.
  • WFS links have additional fields hreflang and length.
  • WFS Collections have additional fields crs and itemType.
  • time API parameter changed to datetime
• The API intersects parameter now accepts a GeoJSON Geometry (any type) instead of a GeoJSON Feature.
• API: Clarification on include and exclude parameters in the field extension and notes on default values.
• API: queries should contain either bbox or intersects.
• API: Core API now has reserved parameters to prevent overlap with extensions
• Updated bbox definitions in API, Item, and Collection specs to include support for optional elevation values.
• Moved Single Item Extension to core (license and providers properties for Items).
• Allow various for the license fields.
• Clarified meaning of SAR and EO platform, constellation, and instrument
• Numerous typos, clarification and general word-smithing

Added

• stac_version: Each Item must specify the STAC version.
• stac_extensions: Introduced this field for Items, Catalogs and Collections.
• Property summaries have been added to catalogs and collections.
• API Transaction extension supports optimistic locking through use of the ETag header.
• Asset Definition Extension added to Collections to allow specifying details about Assets that may appear in member Items.
• Single File Catalog extension added as a format to have a set of Collections and Items in a single file.
• Label extension added with additional fields for describing labeled data, such as used for training data or from the output of a classification
• Timestamp fields added to Item: created and updated to refer to the datetime the metadata file was created or updated.
• Added Search Metadata API extension which adds fields to a response from a STAC API such as the number of items found and how many were returned.
• ItemCollection class added to spec that is a GeoJSON FeatureCollection of Items, such as what would be returned from a search. Located in item directory.
• in operator added to the query extension (to check if value is in a list of values)
• New bands added to the common band names for the EO extension: yellow, rededge, and 2 narrow NIR bands
• Scientific extension can be used in Collections.