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Changelog

Unreleased

Added

  • Add media_type and role filtering to Item and Collection get_assets() method (#936)
  • Asset.has_role (#936)
  • Enum MediaType entry for flatgeobuf (discussion) (#938)
  • Update Grid Extension support to v1.1.0 and fix issue with grid:code prefix validation (#925)
  • Adds custom header support to DefaultStacIO (#889)
  • Python 3.11 checks in CI (#908)
  • Add the optional argument timespec to datetime_to_str function in utils (#929)

Removed

Changed

Fixed

  • Creating dictionaries from Catalogs and Collections without root hrefs now creates valid STAC (#896)
  • Dependency resolution when installing requirements-dev.txt (#897)
  • Serializing optional Collection attributes (#916)

v1.6.1

Fixed

  • Pins jsonschema to >=4.0.1 to avoid a RefResolutionError when validating some extensions (#857)
  • Fixed bug in custom StacIO example in documentation (#879)

v1.6.0

Removed

  • Support for Python 3.7 (#853)

v1.5.0

Added

  • Enum MediaType entry for PDF documents (#758)
  • Enum MediaType entry for HTML documents (#816)
  • Updated Link to obtain stac_io from owner root (#762)
  • Replace test.com with special-use domain name. (#769)
  • Updated AssetDefinition to have create, apply methods (#768)
  • Add Grid Extension support (#799)
  • Rich HTML representations for Jupyter Notebook display (#743)
  • Add assets argument to Item and Collection init methods to allow adding Assets during object initialization (#834)

Changed

  • Updated Raster Extension from v1.0.0 to v1.1.0 (#809)

Fixed

  • Mutating Asset.extra_fields on a cloned Asset also mutated the original asset (#826)
  • "How to create STAC catalogs" tutorial (#775)
  • Add a variables argument, to accompany dimensions, for the apply method of stac objects extended with datacube (#782)
  • Deepcopy collection properties on clone. Implement clone method for Summaries (#794)
  • Collection assets are now preserved when using Collection.clone (#834)
  • Docstrings for StacIO.read_text and StacIO.write_text now match the type annotations for the source argument. (#835)
  • UTC timestamps now always have tzutc timezone even when system timezone is set to UTC. (#848)

v1.4.0

Added

  • Experimental support for Python 3.11 (#731)
  • Accept PathLike objects in StacIO I/O methods, pystac.read_file and pystac.write_file (#728)
  • Support for Storage Extension (#745)
  • Optional StacIO instance as argument to Catalog.save/Catalog.normalize_and_save (#751)
  • More thorough docstrings for pystac.utils functions and classes (#735)

Changed

  • Label Extension version updated to v1.0.1 (#726)
  • Option to filter by media_type in STACObject.get_links and STACObject.get_single_link (#704)

Fixed

  • Self links no longer included in Items for "relative published" catalogs (#725)
  • Adding New and Custom Extensions tutorial now up-to-date with new extensions API (#724)
  • Clarify error message when using PropertyExtension.ext(..., add_if_missing=True) on an Asset with no owner (#746)
  • Type errors when initializing TemporalExtent using a list of datetime objects (#744)

v1.3.0

Added

  • Type annotations for instance attributes on all classes (#705)
  • extensions.datacube.Variable.to_dict method (#699])
  • Clarification of possible errors when using .ext to extend an object (#701)
  • Downloadable documentation as zipped HTML (#715)

Removed

  • Downloadable documentation in ePub format (#715)

Changed

  • Reorganize docs and switch to PyData theme (#687)

Fixed

  • Quickstart tutorial is now up-to-date with all package changes (#674)
  • Creating absolute URLs from absolute URLs (#697])
  • Serialization error when using pystac.extensions.file.MappingObject (#700)
  • Use PropertiesExtension._get_property to properly set return type in TableExtension (#712)
  • DatacubeExtension.variables now has a setter (#699])
  • Landsat STAC tutorial is now up-to-date with all package changes (#692)
  • Paths to sub-catalog files when using Catalog.save (#714)
  • Link to PySTAC Introduction tutorial in tutorials index page (#719)

v1.2.0

Added

  • Added Table-extension (#646)
  • Stable support for Python 3.10 (#656)
  • .python-version files are now ignored by Git (#647)
  • Added a flag to allow users to skip transforming hierarchical link HREFs based on root catalog type (#663)

Removed

  • Exclude tests from package distribution. This should make the package lighter (#604)

Changed

  • Enable strict mode for mypy (#591)
  • Links will get their title from their target if no title is provided (#607)
  • Relax typing on LabelClasses from List to Sequence (#627)
  • Upgraded datacube-extension to version 2.0.0 (#645)
  • By default, ItemCollections will not modify Item HREFs based on root catalog type to avoid performance costs of root link reads (#663)

Fixed

  • generate_subcatalogs can include multiple template values in a single subfolder layer (#595)
  • Avoid implicit re-exports (#591)
  • Fix issue that caused incorrect root links when constructing multi-leveled catalogs (#658)
  • Regression where string Enum values were not serialized properly in methods like Link.to_dict (#654)

v1.1.0

Added

  • Include type information during packaging for use with e.g. mypy (#579)
  • Optional dest_href argument to Catalog.save to allow saving Catalog instances to locations other than their self href (#565)

Changed

v1.0.1

Changed

  • HREFs in Link objects with rel == "self" are converted to absolute HREFs (#574)

v1.0.0

Added

  • ProjectionExtension.crs_string to provide a single string to describe the coordinate reference system (CRS). Useful because projections can be defined by EPSG code, WKT, or projjson. (#548)
  • SAR Extension summaries(#556)
  • Migration for sar:type -> sar:product_type and sar:polarization -> sar:polarizations for pre-0.9 catalogs (#556)
  • Migration from eo:epsg -> proj:epsg for pre-0.9 catalogs (#557)
  • Collection summaries for Point Cloud Extension (#558)
  • PhenomenologyType enum for recommended values of pc:type & SchemaType enum for valid values of type in Point Cloud Schema Objects (#548)
  • to_dict and equality definition for extensions.item_asset.AssetDefinition (#564)
  • Asset.common_metadata property (#563)

Changed

  • The from_dict method on STACObjects will set the object's root link when a root parameter is present. An ItemCollection from_dict with a root parameter will set the root on each of it's Items. (#549)
  • Calling ExtensionManagementMixin.validate_has_extension with add_if_missing = True on an ownerless Asset will raise a STACError (#554)
  • PointcloudSchema -> Schema, PointcloudStatistic -> Statistic for consistency with naming convention in other extensions (#548)
  • RequiredPropertyMissing always raised when trying to get a required property that is None (STACError or KeyError was previously being raised in some cases) (#561)

Fixed

  • Added Collections as a type that can be extended for extensions whose fields can appear in collection summaries (#547)
  • Allow resolved self links when getting an object's self href (#555)
  • Fixed type annotation on SummariesLabelExtension.label_properties setter (#562)
  • Allow comparable types with alternate parameter naming of lt method to pass structural type linting for RangeSummary (#562)

v1.0.0-rc.3

Added

  • (Experimental) support for Python 3.10 (#473)
  • LabelTask enum in pystac.extensions.label with recommended values for "label:tasks" field (#484)
  • LabelMethod enum in pystac.extensions.label with recommended values for "label:methods" field (#484)
  • Label Extension summaries (#484)
  • Timestamps Extension summaries (#513)
  • Define equality and __repr__ of RangeSummary instances based on to_dict representation (#513)
  • Sat Extension summaries (#509)
  • Catalog.get_collections for getting all child Collections for a catalog, and Catalog.get_all_collections for recursively getting all child Collections for a catalog and its children (#511)

Changed

  • Renamed Asset.properties -> Asset.extra_fields and Link.properties -> Link.extra_fields for consistency with other STAC objects (#510)

Fixed

  • Bug in pystac.serialization.identify_stac_object_type where invalid objects with stac_version == 1.0.0 were incorrectly identified as Catalogs (#487)
  • Link constructor classes (e.g. Link.from_dict, Link.canonical, etc.) now return the calling class instead of always returning the Link class (#512)
  • Sat extension now includes all fields defined in v1.0.0 (#509)

Removed

  • STAC_IO class in favor of StacIO. This was deprecated in v1.0.0-beta.1 and has been removed in this release. (#490)
  • Support for Python 3.6 (#500)

v1.0.0-rc.2

Added

  • Add a preserve_dict parameter to ItemCollection.from_dict and set it to False when using ItemCollection.from_file. (#468)
  • StacIO.json_dumps and StacIO.json_loads methods for JSON serialization/deserialization. These were "private" methods, but are now "public" and documented (#471)

Changed

  • pystac.stac_io.DuplicateObjectKeyError moved to pystac.DuplicateObjectKeyError (#471)

v1.0.0-rc.1

Added

  • License file included in distribution (#409)
  • Links to Issues, Discussions, and documentation sites (#409)
  • Python minimum version set to >=3.6 (#409)
  • Code of Conduct (#399)
  • ItemCollection class for working with GeoJSON FeatureCollections containing only STAC Items (#430)
  • Support for Python 3.9 (#420)
  • Migration for pre-1.0.0-rc.1 Stats Objects (renamed to Range Objects in 1.0.0-rc.3) (#447)
  • Attempting to extend a STACObject that does not contain the extension's schema URI in stac_extensions raises new ExtensionNotImplementedError (#450)
  • STACObject.from_dict now takes a preserve_dict parameter, which if False will avoid a call to deepcopy on the passed in dict and can result in performance gains (defaults to True. Reading from a file will use preserve_dict=False resulting in better performance. (#454)

Changed

  • Package author to stac-utils, email to [email protected], url to this repo (#409)
  • StacIO.read_json passes arbitrary positional and keyword arguments to StacIO.read_text (#433)
  • FileExtension updated to work with File Info Extension v2.0.0 (#442)
  • FileExtension only operates on pystac.Asset instances (#442)
  • *Extension.ext methods now have an optional add_if_missing argument, which will add the extension schema URI to the object's stac_extensions list if it is not present (#450)
  • from_file and from_dict methods on STACObject sub-classes always return instance of calling class (#451)

Fixed

  • EOExtension.get_bands returns None for asset without EO bands (#406)
  • identify_stac_object_type returns None and identify_stac_object raises STACTypeError for non-STAC objects (#402)
  • ExtensionManagementMixin.add_to is now idempotent (only adds schema URI to stac_extensions once per Item regardless of the number of calls) (#419)
  • Version check for when extensions changed from short links to schema URIs (#455)
  • Schema URI base for STAC 1.0.0-beta.1 (#455)

v1.0.0-beta.3

Added

  • Summaries for View Geometry, Projection, and Scientific extensions (#372)
  • Raster extension support (#364)
  • solar_illumination field in eo extension (#356)
  • Added Link.canonical static method for creating links with "canonical" rel type (#351)
  • Added RelType enum containing common rel values (#351)
  • Added support for summaries (#264)

Fixed

  • Links to STAC Spec point to latest supported version (#368)
  • Links to STAC Extension pages point to repos in stac-extensions GitHub org (#368)
  • Collection assets (#373)

Removed

  • Two v0.6.0 examples from the test suite (#373)

v1.0.0-beta.2

Changed

  • Split DefaultStacIO's reading and writing into two methods to allow subclasses to use the default link resolution behavior (#354)
  • Increased test coverage for the pointcloud extension (#352)

Fixed

  • Reading json without orjson (#348)

Removed

  • Removed type information from docstrings, since it is redundant with function type annotations (#342)

v1.0.0-beta.1

Added

  • Added type annotations across the library (#309)
  • Added assets to collections (#309)
  • item_assets extension (#309)
  • datacube extension (#309)
  • Added specific errors: ExtensionAlreadyExistsError, ExtensionTypeError, and RequiredPropertyMissing; moved custom exceptions to pystac.errors (#309)

Fixed

  • Validation checks in a few tests (#346)

Changed

  • API change: The extension API changed significantly. See (#309) for more details.
  • API change: Refactored the global STAC_IO object to an instance-specific StacIO implementation. (#309)
  • Asset.get_absolute_href returns None if no absolute href can be inferred (previously the relative href that was passed in was returned) (#309)

Removed

  • Removed properties from Collections (#309)
  • Removed LinkMixin, and implemented those methods on STACObject directly. STACObject was the only class using LinkMixin and this should not effect users (#309
  • Removed single-file-stac extension; this extension is being removed in favor of ItemCollection usage (#309

Deprecated

  • Deprecated STAC_IO in favor of new StacIO class. STAC_IO will be removed in v1.0.0. (#309)

v0.5.6

Added

  • HIERARCHICAL_LINKS array constant of all the types of hierarchical links (self is not included) (#290)

Fixed

  • Fixed error when accessing the statistics attribute of the pointcloud extension when no statistics were defined (#282)
  • Fixed exception being thrown when calling set_self_href on items with assets that have relative hrefs (#291)

Changed

  • Link behavior - link URLs can be either relative or absolute. Hierarchical (e.g., parent, child) links are made relative or absolute based on the value of the root catalog's catalog_type field (#290)
  • Internal self hrefs are set automatically when adding Items or Children to an existing catalog. This removes the need to call normalize_hrefs or manual setting of the hrefs for newly added STAC objects (#294)
  • Catalog.generate_subcatalogs is an order of magnitude faster (#295)

Removed

  • Removed LinkType class and the link_type field from links (#290)

v0.5.5

Added

  • Added support for STAC file extension (#270)

Fixed

  • Fix handling of optional properties when using apply on view extension (#259)
  • Fixed issue with setting None into projection extension fields that are not required breaking validation (#269)

Changed

  • Subclass relevant classes from enum.Enum. This allows iterating over the class' contents. The __str__ method is overwritten so this should not break backwards compatibility. (#261)
  • Extract method to correctly handle setting properties in Item/Asset for ItemExtensions (#272)

v0.5.4

Added

  • SAT Extension (#236)
  • Add support for the scientific extension. (#199)

Fixed

  • Fix unexpected behaviour of generate_subcatalogs (#241)
  • Get eo bands defined in assets only (#243)
  • Collection TemporalExtent can be open ended (#247)
  • Make asset HREFs relative or absolute based on CatalogType during save (#251)

Changed

  • Be more strict with CatalogType in Catalog.save (#244)

v0.5.3

Added

  • Added support for the pointcloud extension (#176)
  • Added support for the version extension (#193)
  • Added support for the SAR extension (#203)
  • Added the capability to more flexibly organize STACs using normalize_hrefs (#219)
  • Added a 'generate_subcatalogs' to Catalog to allow for subcatalogs to be created by using item properties via a template string (#219)
  • Added 'from_items' method to Extent (#223)
  • Added a catalog_type property to track the CatalogType of read in or previously saved catalogs (#224)
  • Added a tutorial for creating Landsat 8 STACs (#181)
  • Added codespell to CI (#206)
  • Added more testing to Links (#211)

Fixed

  • Fixed issue that can cause infinite recursion during full resolve (#204)
  • Fixed issue that required label_classes in label items (#201)
  • Fixed issue that caused geometries and bboxes produced by Shapely to fail PySTAC's validaton (#201)
  • Allow for path prefixes like /vsitar/ (#208)
  • Fix Item set_self_href to ensure item asset locations do not break (#226)
  • Fixed an incorrect exception being thrown from Link.get_href() if there is no target_href (#201)
  • Fixed issue where 0.9.0 items were executing the commons extension logic when they shouldn't (#221)
  • Fixed issue where cloned assets did not have their owning Items set (#228)
  • Fixed issue that caused make_asset_hrefs_relative to produce incorrect HREFs when asset HREFs were already relative (#229)
  • Improve error handling when accidentally importing a Collection with Catalog (#186)
  • Fixed spacenet tutorial bbox issue (#201)
  • Fix formatting of error message in stac_validator (#190)
  • Fixed typos (#192, #195)

Changed

  • Refactor caching to utilize HREFs and parent IDs. STAC objects now no longer need unique IDs to work with PySTAC (#214, #160)
  • Allow a user to pass a single list as bbox and interval for SpatialExtent and TemporalExtent (#201, fixes #198)

v0.5.2

Thank you to all the new contributors that contributed during STAC Sprint 6!

Added

  • Added support for the timestamps extension(#161)
  • update_extent_from_items method to Collection for updating Extent objects within a collection based on the contained items. (#168)
  • validate_all method to Catalogs (and by inheritance collections) for validating all catalogs, collections and items contained in that catalog (#162)
  • validate_all method to pystac.validdation for validating all catalogs, collections and items contained in STAC JSON dicts across STAC versions. (#162)
  • Additional test coverage. (#165, #171)
  • Added codecov to CI (#163)

Fixed

  • Fix bug that caused get_children to miss some links. (#172)
  • Fixed bug in ExtensionIndex that was causing errors when trying to read help() for that object (#159)

Changed

  • Remove spaces in CBERS test library (#157)
  • Changed some unit test assertions for better error messages (#158)
  • Moved PySTAC to the stac-utils GitHub organization.

v0.5.1

Added

  • A tutorial for creating extensions (#150)

Fixed

  • Fixed Satellite extension ID, using sat instead of satellite (#146, #147)

v0.5.0

Added

  • Added support for the Projection extension(#125)
  • Add support for Item Asset properties (#127)
  • Added support for dynamically changing the STAC version via pystac.set_stac_version and pystac.get_stac_version (#130)
  • Added support for prerelease versions in version comparisons for the pystac.serialization.identify package (#138)
  • Added validation for PySTAC STACObjects as well as arbitrary STAC JSON (#139)
  • Added the ability to read HTTP and HTTPS uris by default (#139)

Changed

  • Clarification on null geometries, making bbox not required if a null geometry is used. (#123)
  • Multiple extents (bounding boxes / intervals) are allowed per Collection (#123)
  • Moved eo:gsd from eo extension to core gsd field in Item common metadata (#123) asset extension renamed to item-assets and renamed assets field in Collections to item_assets (#123)
  • get_asset_bands and set_asset_bands were renamed get_bands and set_bands and follow the new item asset property access pattern.
  • Modified the single-file-stac extension to extend Catalog (#128)

Removed

  • ItemCollection was removed. (#123)
  • The commons extension was removed. Collection properties will still be merged for pre-1.0.0-beta.1 items where appropriate (#129)
  • Removed pystac.STAC_VERSION. See addition of get_stac_version above. (#130)

v0.4.0

The two major changes for this release are:

  • Upgrade to STAC 0.9.0
  • Refactor the extensions API to accommodate items that implement multiple extensions (e.g. eo and view)

See the stac-spec 0.9.0 changelog and issue #65 for more information.

API Changes

These are the major API changes that will have to be accounted for when upgrading PySTAC:

Extensions are wrappers around Catalogs, Collection and Items, and no longer inherit

This change affects the two extensions that were implemented for Item - EOItem and LabelItem have become EOItemExt and LabelItemExt, and no longer inherit from Item.

This change was motivated by the 0.9 change that split some properties out from eo into the view extension. If we kept an inheritance-based extension architecture, we would not be able to account well for these new items that implemented both the eo and view extensions.

See the Extensions section in the documentation for more information on the new way to use extensions.

Extensions have moved to their own package

  • pystac.label -> pystac.extensions.label
  • pystac.eo -> pystac.extensions.eo
  • pystac.single_file_stac -> pystac.extensions.single_file_stac

Added

  • pystac.read_file as a convenience function for reading in a STACObject from a file at a URI which delegates to STACObject.from_file.
  • pystac.read_file as a convenience function for reading in a STACObject from a file at a URI.
  • Added support for the view extension.
  • Added support for the commons extension.

Changed

  • Migrated CI workflows from Travis CI to GitHub Actions #108

  • Dropped support for Python 3.5 #108

  • Extension classes for label, eo and single-file-stac were moved to the pystac.extensions package.

  • the eo and label extensions changed from being a subclass of Item to wrapping items. Note: This is a major change in the API for dealing with extensions. See the note below for more information.

  • Renamed the class that enumerates extension names from Extension to Extensions

  • Asset properties always return a dict instead of being None for Assets that have non-core properties.

  • The Band constructor in the EO extension changed to taking a dict. To create a band from property values, use Band.create

v0.3.4 - 2020-06-20

Changed

  • Further narrow version for SAR extension #85

Fixed

  • Fixed issue with reading ItemCollections directly. #86
  • Fix bug in make_absolute_href #94
  • Fixed issues with fully_resolve #98
  • Fixed a bug when root link was not set #100

v0.3.3 - 2020-02-05

Added

  • Allow for backwards compatibility for reading STAC #77

Fixed

  • Fix issue with multiple collection reads per item #79
  • Fix issue with iteration of children in catalog.walk #78
  • Allow v0.7.0 sar items to fit in version range #80

v0.3.2 - 2020-01-28

Added

  • Add functionality for identifying STAC JSON information #50

Fixed

  • Documentation improvements #44
  • Updated MediaTypes to reflect correct GeoTIFF and COG names #66
  • Fix utils to work with windows paths. #68
  • Modified output datetime strings to ISO8601. #69
  • Respect tzinfo in the provided datetime #70
  • Set asset owner to item when reading in items.#71
  • Fixed catalog and collection clone logic to avoid dupliction root link #72

v0.3.1 - 2019-11-04

Added

  • Add methods for removing single items and children from catalogs.
  • Add methods for removing objects from the ResolvedObjectCache.

Fixed

  • Fixed issue where cleared items and children were still in the root object cache.

Changed

  • Moved STAC version to 0.8.1
  • LabelItem reduced validation as there is some confusion on how segmentation classes

v0.3.0 - 2019-10-31

Initial release.