Release v0.9.0-rc2 · radiantearth/stac-spec

[v0.9.0-rc2] - 2020-02-12

Basics added to Common Metadata definitions with new description field for
Item properties
New fields to the link object to facilitate pagination support for POST requests
Data role, as a suggestion for a common role for data files to be used in case data providers don't come up with their own names and semantics
Clarification text on HTTP verbs in STAC API
View Geometry Extension

Item title definition moved from core Item fields to Common Metadata Basics
fields. No change is required for STAC Items.
putFeature can return a PreconditionFailed to provide more explicit information when the resource has changed in the server
Sort extension now uses "+" and "-" prefixes for GET requests to denote sort order.
Clarified how /search links must be added to / and changed that links to both GET and POST must be provided now that the method can be specified in links.
Moved angle definitions between extensions view and sat
- sat:off_nadir_angle -> view:off_nadir
- sat:azimuth_angle -> view:azimuth
- sat:incidence_angle -> view:incidence_angle
- sat:sun_azimuth_angle -> view:sun_azimuth
- sat:sun_elevation_angle -> view:sun_elevation

In API, removed any mention of using media type multipart/form-data and x-www-form-urlencoded

Fixed Item JSON Schema now allOf optional Common Metadata properties are evaluated
Clarified usage of optional Common Metadata fields for STAC Items
Clarified usage of paging options, especially in relation to what OGC API - Features offers
Allow Commonmark in asset description, as it's allowed everywhere else
Put asset description in the API
Fixed API spec regarding license expressions
Added missing schema in the API Version extension