fiona (2024)

Table of Contents
Changes 1.9.6 (2024-03-07) 1.9.5 (2023-10-11) 1.9.4.post1 (2023-05-23) 1.9.4 (2023-05-16) 1.9.3 (2023-04-10) 1.9.2 (2023-03-20) 1.9.1 (2023-02-09) 1.9.0 (2023-01-30) 1.9b2 (2023-01-22) 1.9b1 (2022-12-13) 1.9a3 (2022-10-17) 1.9a2 (2022-06-10) 1.9a1 (2022-05-19) 1.8.21 (2022-02-07) 1.8.20 (2021-05-31) 1.8.19 (2021-04-07) 1.8.18 (2020-11-17) 1.8.17 (2020-09-09) 1.8.16 (2020-09-04) 1.8.15 (2020-09-03) 1.8.14 (2020-08-31) 1.8.13.post1 (2020-02-21) 1.8.13 (2019-12-05) 1.8.12 (2019-12-04) 1.8.11 (2019-11-07) 1.8.10 (2019-11-07) 1.8.9.post2 (2019-10-22) 1.8.9.post1 (2019-10-22) 1.8.9 (2019-10-21) 1.8.8 (2019-09-25) 1.8.7 (2019-09-24) 1.8.6 (2019-03-18) 1.8.5 (2019-03-15) 1.8.4 (2018-12-10) 1.8.3 (2018-11-30) 1.8.2 (2018-11-19) 1.8.1 (2018-11-15) 1.8.0 (2018-10-31) 1.8rc1 (2018-10-26) 1.8b2 (2018-10-23) 1.8b1 (2018-10-15) 1.8a3 (2018-10-01) 1.8a2 (2018-07-24) 1.8a1 (2017-11-06) 1.7.11.post1 (2018-01-08) 1.7.11 (2017-12-14) 1.7.10.post1 (2017-10-30) 1.7.10 (2017-10-26) 1.7.9.post1 (2017-08-21) 1.7.9 (2017-08-17) 1.7.8 (2017-06-20) 1.7.7 (2017-06-05) 1.7.6 (2017-04-26) 1.7.5 (2017-03-20) 1.7.4 (2017-02-20) 1.7.3 (2017-02-14) 1.7.2 (2017-01-27) 1.7.1.post1 (2016-12-23) 1.7.1 (2016-11-16) 1.7.0post2 (2016-06-15) 1.7.0post1 (2016-06-15) 1.7.0 (2016-06-14) 1.7b2 (2016-06-13) 1.7b1 (2016-06-10) 1.6.4 (2016-05-06) 1.6.3.post1 (2016-03-27) 1.6.3 (2015-12-22) 1.6.2 (2015-09-22) 1.6.1 (2015-08-12) 1.6.0 (2015-07-21) 1.5.1 (2015-03-19) 1.5.0 (2015-02-02) 1.4.8 (2014-11-02) 1.4.7 (2014-10-28) 1.4.6 (2014-10-21) 1.4.5 (2014-10-18) 1.4.4 (2014-10-13) 1.4.3 (2014-10-10) 1.4.2 (2014-10-03) 1.4.1 (2014-09-30) 1.4.0 (2014-09-22) 1.3.0 (2014-09-17) 1.2.0 (2014-09-02) 1.1.6 (2014-07-23) 1.1.5 (2014-05-21) 1.1.4 (2014-04-03) 1.1.3 (2014-03-23) 1.1.2 (2014-02-14) 1.1.1 (2014-02-02) 1.1 (2014-01-22) 1.0.3 (2014-01-21) 1.0.2 (2013-09-09) 1.0.1 (2013-08-16) 1.0 (2013-07-30) 0.16.1 (2013-07-02) 0.16 (2013-06-24) 0.15 (2013-06-06) 0.14 (2013-05-04) 0.13 (2013-04-30) 0.12.1 (2013-04-16) 0.12 (2013-04-15) 0.11 (2013-04-14) 0.10 (2013-03-23) 0.9.1 (2013-03-07) 0.9 (2013-03-06) 0.8 (2012-02-21) 0.7 (2012-01-29) 0.6.2 (2012-01-10) 0.6.1 (2012-01-06) 0.6 (2012-01-05) 0.5 (2011-12-19) 0.2 (2011-09-16) 0.1.1 (2008-12-04) FAQs

Fiona streams simple feature data to and from GIS formats like GeoPackage andShapefile.

Fiona can read and write real-world data using multi-layered GIS formats,zipped and in-memory virtual file systems, from files on your hard drive or incloud storage. This project includes Python modules and a command lineinterface (CLI).

Fiona depends on GDAL but is different from GDAL’s ownbindings. Fiona is designed tobe highly productive and to make it easy to write code which is easy to read.

Changes

All issue numbers are relative to https://github.com/Toblerity/Fiona/issues.

1.9.6 (2024-03-07)

  • Ensure that geometry types in a schema are translated to a linear type, asgeometry instances are (#1313).

  • Fix broken stable API documentation on Read The Docs (#).

  • Remove install requirement of setuptools, a regression introduced in 1.9.5.

1.9.5 (2023-10-11)

Bug fixes:

  • Expand keys in schema mismatch exception, resolving #1278.

  • Preserve the null properties and geometry of a Feature when serializing(#1276).

Packaging:

  • The distribution name is now officially “fiona”, not “Fiona”. The importname remains “fiona”.

  • Builds now require Cython >= 3.0.2 (#1276).

  • PyPI wheels include GDAL 3.6.4, PROJ 9.0.1, and GEOS 3.11.2.

  • PyPI wheels include curl 8.4.0, addressing CVE-2023-38545 and CVE-38546.

  • PyPI wheels are now available for Python 3.12.

1.9.4.post1 (2023-05-23)

Extraneous files were unintentionally packaged in the 1.9.4 wheels. This post1release excludes them so that wheel contents are as in version 1.9.3.

1.9.4 (2023-05-16)

  • The performance of Feature.from_dict() has been improved (#1267).

  • Several sources of meaningless log messages from fiona._geometry about NULLgeometries are avoided (#1264).

  • The Parquet driver has been added to the list of supported drivers and willbe available if your system’s GDAL library links libarrow. Note that fionawheels on PyPI do not include libarrow as it is rather large.

  • Ensure that fiona._vendor modules are found and included.

  • Bytes type feature properties are now hex encoded when serializing to GeoJSON(#1263).

  • Docstrings for listdir and listlayers have been clarified and harmonized.

  • Nose style test cases have been converted to unittest.TestCase (#1256).

  • The munch package used by fio-filter and fio-calc is now vendored and patchedto remove usage of the deprecated pkg_resources module (#1255).

1.9.3 (2023-04-10)

  • Rasterio CRS objects are compatible with the Collection constructor and arenow accepted (#1248).

  • Enable append mode for fio-load (#1237).

  • Reading a GeoJSON with an empty array property can result in a segmentationfault since version 1.9.0. This has been fixed (#1228).

1.9.2 (2023-03-20)

  • Get command entry points using importlib.metadata (#1220).

  • Instead of warning, transform_geom() raises an exception when some pointscan’t be reprojected unless the caller opts in to partial reprojection. Thisrestores the behavior of version 1.8.22.

  • Add support for open options to all CLI commands that call fiona.open(#1215).

  • Fix a memory leak that can occur when iterating over a dataset using strides(#1205).

  • ZipMemoryFile now supports zipped GDB data (#1203).

1.9.1 (2023-02-09)

  • Log a warning message when identically named fields are encountered (#1201).

  • Avoid dependence on listdir order in tests (#1193).

  • Prevent empty geometries arrays from appearing in __geo_interface__ (#1197).

  • setuptools added to pyproject.toml. Its pkg_resources module is used by theCLI (#1191).

1.9.0 (2023-01-30)

  • CITATION.txt has been replaced by a new CITATION.cff file and the creditshave been updated.

  • In setup.py the distutils (deprecated) logger is no longer used.

1.9b2 (2023-01-22)

  • Add Feature.__geo_interface__ property (#1181).

  • Invalid creation options are filtered and ignored (#1180).

  • The readme doc has been shortened and freshened up, with a modern example forversion 1.9.0 (#1174).

  • The Geometry class now provides and looks for __geo_interface__ (#1174).

  • The top level fiona module now exports Feature, Geometry, and Properties(#1174).

  • Functions that take Feature or Geometry objects will continue to take dictsor objects that provide __geo_interface__ (#1177). This reverses thedeprecation introduced in 1.9a2.

  • Python ignores SIGPIPE by default. By never catching BrokenPipeError viaexcept Exception when, for example, piping the output of rio-shapes tothe Unix head program, we avoid getting an unhandled BrokenPipeError messagewhen the interpreter shuts down (#2689).

1.9b1 (2022-12-13)

New features:

  • Add listdir and listlayers method to io.MemoryFile (resolving #754).

  • Add support for TIN and triangle geometries (#1163).

  • Add an allow_unsupported_drivers option to fiona.open() (#1126).

  • Added support for the OGR StringList field type (#1141).

Changes and bug fixes:

  • Missing and unused imports have been added or removed.

  • Make sure that errors aren’t lost when a collection can’t be saved properly(#1169).

  • Ensure that ZipMemoryFile have the proper GDAL name after creation so that wecan use listdir() (#1092).

  • The fiona._loading module, which supports DLL loading on Windows,has been moved into __init__.py and is no longer used anywhere else (#1168).

  • Move project metadata to pyproject.toml (#1165).

  • Update drvsupport.py to reflect new format capabilities in GDAL 3.6.0(#1122).

  • Remove debug logging from env and _env modules.

1.9a3 (2022-10-17)

Packaging:

1.9a2 (2022-06-10)

Deprecations:

  • Fiona’s API methods will accept feature and geometry dicts in 1.9.0, but thisusage is deprecated. Instances of Feature and Geometry will be required in2.0.

  • The precision keyword argument of fiona.transform.transform_geom isdeprecated and will be removed in version 2.0.

  • Deprecated usage has been eliminated in the project. Fiona’s tests pass whenrun with a -Werror::DeprecationWarning filter.

Changes:

  • Fiona’s FionaDeprecationWarning now sub-classes DeprecationWarning.

  • Some test modules have beeen re-formatted using black.

New features:

  • Fiona Collections now carry a context exit stack into which we can push fionaEnvs and MemoryFiles (#1059).

  • Fiona has a new CRS class, like rasterio’s, which is compatible with the CRSdicts of previous versions (#714).

1.9a1 (2022-05-19)

Deprecations:

  • The fiona.drivers() function has been deprecated and will be removed inversion 2.0. It should be replaced by fiona.Env().

  • The new fiona.meta module will be renamed to fiona.drivers in version 2.0.

Packaging:

  • Source distributions contain no C source files and require Cython to createthem from .pyx files (#1096).

Changes:

  • Shims for various versions of GDAL have been removed and are replaced byCython compilation conditions (#1093).

  • Use of CURL_CA_BUNDLE environment variable is replaced by a more specificGDAL/PROJ_CURL_CA_BUNDLE (#1095).

  • Fiona’s feature accessors now return instances of fiona.model.Feature insteadof Python dicts (#787). The Feature class is compatible with code thatexpects GeoJSON-like dicts but also provides id, geometry, and propertiesattributes. The last two of these are instances of fiona.model.Geometry andfiona.model.Properties.

  • GDAL 3.1.0 is the minimum GDAL version.

  • Drop Python 2, and establish Python 3.7 as the minimum version (#1079).

  • Remove six and reduce footprint of fiona.compat (#985).

New features:

  • The appropriate format driver can be detected from filename in write mode (#948).

  • Driver metadata including dataset open and dataset and layer creationsoptions are now exposed through methods of the fiona.meta module (#950).

  • CRS WKT format support (#979).

  • Add ‘where’ SQL clause to set attribute filter (#961, #1097).

Bug fixes:

  • Env and Session classes have been updated for parity with rasterio and toresolve a credential refresh bug (#1055).

1.8.21 (2022-02-07)

Changes:

  • Driver mode support tests have been made more general and less susceptible todriver quirks involving feature fields and coordinate values (#1060).

  • OSError is raised on attempts to open a dataset in a Python file object in“a” mode (see #1027).

  • Upgrade attrs, cython, etc to open up Python 3.10 support (#1049).

Bug fixes:

  • Allow FieldSkipLogFilter to handle exception messages as well as strings(reported in #1035).

  • Clean up VSI files left by MemoryFileBase, resolving #1041.

  • Hard-coded “utf-8” collection encoding added in #423 has been removed(#1057).

1.8.20 (2021-05-31)

Packaging:

  • Wheels include GDAL 3.3.0 and GEOS 3.9.1.

Bug fixes:

  • Allow use with click 8 and higher (#1015).

1.8.19 (2021-04-07)

Packaging:

  • Wheels include GDAL 3.2.1 and PROJ 7.2.1.

Bug fixes:

  • In fiona/env.py the GDAL data path is now configured using set_gdal_configinstead by setting the GDAL_DATA environment variable (#1007).

  • Spurious iterator reset warnings have been eliminatged (#987).

1.8.18 (2020-11-17)

  • The precision option of transform has been fixed for the case ofGeometryCollections (#971, #972).

  • Added missing –co (creation) option to fio-load (#390).

  • If the certifi package can be imported, its certificate store location willbe passed to GDAL during import of fiona._env unless CURL_CA_BUNDLE isalready set.

  • Warn when feature fields named “” are found (#955).

1.8.17 (2020-09-09)

  • To fix issue #952 the fio-cat command no longer cuts feature geometries atthe anti-meridian by default. A –cut-at-antimeridian option has been addedto allow cutting of geometries in a geographic destination coordinatereference system.

1.8.16 (2020-09-04)

  • More OGR errors and warnings arising in calls to GDAL C API functions aresurfaced (#946).

  • A circular import introduced in some cases in 1.8.15 has been fixed (#945).

1.8.15 (2020-09-03)

  • Change shim functions to not return tuples (#942) as a solution for thepackaging problem reported in #941.

  • Raise a Python exception when VSIFOpenL fails (#937).

1.8.14 (2020-08-31)

  • When creating a new Collection in a MemoryFile with a default (random) nameFiona will attempt to use a format driver-supported file extension (#934).When initializing a MemoryFile with bytes of data formatted for a vectordriver that requires a certain file name or extension, the user shouldcontinue to pass an appropriate filename and/or extension.

  • Read support for FlatGeobuf has been enabled in the drvsupport module.

  • The MemoryFile implementation has been improved so that it can support multi-partS3 downloads (#906). This is largely a port of code from rasterio.

  • Axis ordering for results of fiona.transform was wrong when CRS were passedin the “EPSG:dddd” form (#919). This has been fixed by (#926).

  • Allow implicit access to the only dataset in a ZipMemoryFile. The pathargument of ZipMemoryFile.open() is now optional (#928).

  • Improve support for datetime types: support milliseconds (#744), timezones (#914)and improve warnings if type is not supported by driver (#572).

  • Fix “Failed to commit transaction” TransactionError for FileGDB driver.

  • Load GDAL DLL dependencies on Python 3.8+ / Windows with add_dll_directory() (#851).

  • Do not require optional properties (#848).

  • Ensure that slice does not overflow available data (#884).

  • Resolve issue when “ERROR 4: Unable to open EPSG support file gcs.csv.” is raised onimporting fiona (#897).

  • Resolve issue resulting in possible mixed up fields names (affecting only DXF, GPX,GPSTrackMacker and DGN driver) (#916).

  • Ensure crs_wkt is passed when writing to MemoryFile (#907).

1.8.13.post1 (2020-02-21)

  • This release is being made to improve binary wheel compatibility with shapely1.7.0. There have been no changes to the fiona package code since 1.8.13.

1.8.13 (2019-12-05)

  • The Python version specs for argparse and ordereddict in 1.8.12 were wrongand have been corrected (#843).

1.8.12 (2019-12-04)

  • Specify Python versions for argparse, enum34, and ordereddict requirements(#842).

1.8.11 (2019-11-07)

  • Fix an access violation on Windows (#826).

1.8.10 (2019-11-07)

Deprecations:

  • Use of vfs keyword argument with open or listlayers has been previously notedas deprecated, but now triggers a deprecation warning.

Bug fixes:

  • fiona.open() can now create new datasets using CRS URNs (#823).

  • listlayers() now accepts file and Path objects, like open() (#825).

  • Use new set_proj_search_path() function to set the PROJ data search path. ForGDAL versions before 3.0 this sets the PROJ_LIB environment variable. ForGDAL version 3.0 this calls OSRSetPROJSearchPaths(), which overridesPROJ_LIB.

  • Remove old and unused _drivers extension module.

  • Check for header.dxf file instead of pcs.csv when looking for installed GDALdata. The latter is gone with GDAL 3.0 but the former remains (#818).

1.8.9.post2 (2019-10-22)

  • The 1.8.9.post1 release introduced a bug affecting builds of the package froma source distribution using GDAL 2.x. This bug has been fixed in commit960568d.

1.8.9.post1 (2019-10-22)

  • A change has been made to the package setup script so that the shim modulefor GDAL 3 is used when building the package from a source distribution.There are no other changes to the package.

1.8.9 (2019-10-21)

  • A shim module and support for GDAL 3.0 has been added. The package can now bebuilt and used with GDAL 3.0 and PROJ 6.1 or 6.2. Note that the 1.8.9 wheelswe will upload to PyPI will contain GDAL 2.4.2 and PROJ 4.9.3 as in the 1.8.8wheels.

1.8.8 (2019-09-25)

  • The schema of geopackage files with a geometry type code of 3000 could not bereported using Fiona 1.8.7. This bug is fixed.

1.8.7 (2019-09-24)

Bug fixes:

  • Regression in handling of polygons with M values noted under version 1.8.5below was in fact not fixed then (see new report #789), but is fixed inversion 1.8.7.

  • Windows filenames containing “!” are now parsed correctly, fixing issue #742.

Upcoming changes:

  • In version 1.9.0, the objects yielded when a Collection is iterated will bemutable mappings but will no longer be instances of Python’s dict. Version1.9 is intended to be backwards compatible with 1.8 except where user codetests isinstance(feature, dict). In version 2.0 the new Feature, Geometry,and Properties classes will become immutable mappings. Seehttps://github.com/Toblerity/fiona-rfc/blob/master/rfc/0001-fiona-2-0-changes.mdfor more discussion of the upcoming changes for version 2.0.

1.8.6 (2019-03-18)

  • The advertisem*nt for JSON driver enablement in 1.8.5 was false (#176), butin this release they are ready for use.

1.8.5 (2019-03-15)

  • GDAL seems to work best if GDAL_DATA is set as early as possible. Ideally itis set when building the library or in the environment before importingFiona, but for wheels we patch GDAL_DATA into os.environ when fiona.envis imported. This resolves #731.

  • A combination of bugs which allowed .cpg files to be overlooked has beenfixed (#726).

  • On entering a collection context (Collection.__enter__) a new anonymous GDALenvironment is created if needed and entered. This makes withfiona.open(…) as collection: roughly equivalent to with fiona.open(…)as collection, Env():. This helps prevent bugs when Collections are createdand then used later or in different scopes.

  • Missing GDAL support for TopoJSON, GeoJSONSeq, and ESRIJSON has been enabled(#721).

  • A regression in handling of polygons with M values (#724) has been fixed.

  • Per-feature debug logging calls in OGRFeatureBuilder methods have beeneliminated to improve feature writing performance (#718).

  • Native support for datasets in Google Cloud Storage identified by “gs”resource names has been added (#709).

  • Support has been added for triangle, polyhedral surface, and TIN geometrytypes (#679).

  • Notes about using the MemoryFile and ZipMemoryFile classes has been added tothe manual (#674).

1.8.4 (2018-12-10)

  • 3D geometries can now be transformed with a specified precision (#523).

  • A bug producing a spurious DriverSupportError for Shapefiles with a “time”field (#692) has been fixed.

  • Patching of the GDAL_DATA environment variable was accidentally left in placein 1.8.3 and now has been removed.

1.8.3 (2018-11-30)

  • The RASTERIO_ENV config environment marker this project picked up fromRasterio has been renamed to FIONA_ENV (#665).

  • Options –gdal-data and –proj-data have been added to the fio-env command sothat users of Rasterio wheels can get paths to set GDAL_DATA and PROJ_LIBenvironment variables.

  • The unsuccessful attempt to make GDAL and PROJ support file discovery andconfiguration automatic within collection’s crs and crs_wkt properties hasbeen reverted. Users must execute such code inside a with Env() block orset the GDAL_DATA and PROJ_LIB environment variables needed by GDAL.

1.8.2 (2018-11-19)

Bug fixes:

  • Raise FionaValueError when an iterator’s __next__ is called and the sessionis found to be missing or inactive instead of passing a null pointer toOGR_L_GetNextFeature (#687).

1.8.1 (2018-11-15)

Bug fixes:

  • Add checks around OSRGetAuthorityName and OSRGetAuthorityCode calls that willlog problems with looking up these items.

  • Opened data sources are now released before we raise exceptions inWritingSession.start (#676). This fixes an issue with locked files onWindows.

  • We now ensure that an Env instance exists when getting the crs or crs_wktproperties of a Collection (#673, #690). Otherwise, required GDAL and PROJdata files included in Fiona wheels can not be found.

  • GDAL and PROJ data search has been refactored to improve testability (#678).

  • In the project’s Cython code, void* pointers have been replaced with properGDAL types (#672).

  • Pervasive warning level log messages about ENCODING creation options (#668)have been eliminated.

1.8.0 (2018-10-31)

This is the final 1.8.0 release. Thanks, everyone!

Bug fixes:

  • We cpdef Session.stop so that it has a C version that can be called safelyfrom __dealloc__, fixing a PyPy issue (#659, #553).

1.8rc1 (2018-10-26)

There are no changes in 1.8rc1 other than more test standardization and theintroduction of a temporary test_collection_legacy.py module to support thebuild of fully tested Python 2.7 macosx wheels on Travis-CI.

1.8b2 (2018-10-23)

Bug fixes:

  • The ensure_env_with_credentials decorator will no longer clobber credentialsof the outer environment. This fixes a bug reported to the Rasterio projectand which also existed in Fiona.

  • An unused import of the packaging module and the dependency have beenremoved (#653).

  • The Env class logged to the ‘rasterio’ hierarchy instead of ‘fiona’. Thismistake has been corrected (#646).

  • The Mapping abstract base class is imported from collections.abc whenpossible (#647).

Refactoring:

  • Standardization of the tests on pytest functions and fixtures continues andis nearing completion (#648, #649, #650, #651, #652).

1.8b1 (2018-10-15)

Deprecations:

  • Collection slicing has been deprecated and will be prohibited in a futureversion.

Bug fixes:

  • Rasterio CRS objects passed to transform module methods will be convertedto dicts as needed (#590).

  • Implicitly convert curve geometries to their linear approximations ratherthan failing (#617).

  • Migrated unittest test cases in test_collection.py and test_layer.py to theuse of the standard data_dir and path_coutwildrnp_shp fixtures (#616).

  • Root logger configuration has been removed from all test scripts (#615).

  • An AWS session is created for the CLI context Env only if explicitlyrequested, matching the behavior of Rasterio’s CLI (#635).

  • Dependency on attrs is made explicit.

  • Other dependencies are pinned to known good versions in requirements files.

  • Unused arguments have been removed from the Env constructor (#637).

Refactoring:

  • A with_context_env decorator has been added and used to set up the GDALenvironment for CLI commands. The command functions themselves are nowsimplified.

1.8a3 (2018-10-01)

Deprecations:

  • The fiona.drivers() context manager is officially deprecated. Allusers should switch to fiona.Env(), which registers format drivers andmanages GDAL configuration in a reversible manner.

Bug fixes:

  • The Collection class now filters log messages about skipped fields toa maximum of one warning message per field (#627).

  • The boto3 module is only imported when needed (#507, #629).

  • Compatibility with Click 7.0 is achieved (#633).

  • Use of %r instead of %s in a debug() call prevents UnicodeDecodeErrors(#620).

1.8a2 (2018-07-24)

New features:

  • 64-bit integers are the now the default for int type fields (#562, #564).

  • ‘http’, ‘s3’, ‘zip+http’, and ‘zip+s3’ URI schemes for datasets are nowsupported (#425, #426).

  • We’ve added a MemoryFile class which supports formatted in-memoryfeature collections (#501).

  • Added support for GDAL 2.x boolean field sub-type (#531).

  • A new fio rm command makes it possible to cleanly remove multi-filedatasets (#538).

  • The geometry type in a feature collection is more flexible. We can nowspecify not only a single geometry type, but a sequence of permissible types,or “Any” to permit any geometry type (#539).

  • Support for GDAL 2.2+ null fields has been added (#554).

  • The new gdal_open_vector() function of our internal API provides muchimproved error handling (#557).

Bug fixes:

  • The bug involving OrderedDict import on Python 2.7 has been fixed (#533).

  • An AttributeError raised when the --bbox option of fio-cat is usedwith more than one input file has been fixed (#543, #544).

  • Obsolete and derelict fiona.tool module has been removed.

  • Revert the change in 0a2bc7c that discards Z in geometry types when acollection’s schema is reported (#541).

  • Require six version 1.7 or higher (#550).

  • A regression related to “zip+s3” URIs has been fixed.

  • Debian’s GDAL data locations are now searched by default (#583).

1.8a1 (2017-11-06)

New features:

  • Each call of writerecords() involves one or more transactions of up to20,000 features each. This improves performance when writing GeoPackage filesas the previous transaction size was only 200 features (#476, #491).

Packaging:

  • Fiona’s Cython source files have been refactored so that there are no longerseparate extension modules for GDAL 1.x and GDAL 2.x. Instead there is a baseextension module based on GDAL 2.x and shim modules for installations thatuse GDAL 1.x.

1.7.11.post1 (2018-01-08)

  • This post-release adds missing expat (and thereby GPX format) support tothe included GDAL library (still version 2.2.2).

1.7.11 (2017-12-14)

  • The encoding keyword argument for fiona.open(), which is intendedto allow a caller to override a data source’s own and possibly erroneousencoding, has not been working (#510, #512). The problem is that we weren’talways setting GDAL open or config options before opening the data sources.This bug is resolved by a number of commits in the maint-1.7 branch andthe fix is demonstrated in tests/test_encoding.py.

  • An --encoding option has been added to fio-load to enable creation ofencoded shapefiles with an accompanying .cpg file (#499, #517).

1.7.10.post1 (2017-10-30)

  • A post-release has been made to fix a problem with macosx wheels uploadedto PyPI.

1.7.10 (2017-10-26)

Bug fixes:

  • An extraneous printed line from the rio cat --layers validator has beenremoved (#478).

Packaging:

  • Official OS X and Manylinux1 wheels (on PyPI) for this release will becompatible with Shapely 1.6.2 and Rasterio 1.0a10 wheels.

1.7.9.post1 (2017-08-21)

This release introduces no changes in the Fiona package. It upgrades GDALfrom 2.2.0 to 2.2.1 in wheels that we publish to the Python Package Index.

1.7.9 (2017-08-17)

Bug fixes:

  • Acquire the GIL for GDAL error callback functions to prevent crashes whenGDAL errors occur when the GIL has been released by user code.

  • Sync and flush layers when closing even when the number of features is notprecisely known (#467).

1.7.8 (2017-06-20)

Bug fixes:

  • Provide all arguments needed by CPLError based exceptions (#456).

1.7.7 (2017-06-05)

Bug fixes:

  • Switch logger warn() (deprecated) calls to warning().

  • Replace all relative imports and cimports in Cython modules with absoluteimports (#450).

  • Avoid setting PROJ_LIB to a non-existent directory (#439).

1.7.6 (2017-04-26)

Bug fixes:

  • Fall back to share/proj for PROJ_LIB (#440).

  • Replace every call to OSRDestroySpatialReference() with OSRRelease(),fixing the GPKG driver crasher reported in #441 (#443).

  • Add a DriverIOError derived from IOError to use for driver-specificerrors such as the GeoJSON driver’s refusal to overwrite existing files.Also we now ensure that when this error is raised by fiona.open() anycreated read or write session is deleted, this eliminates spuriousexceptions on teardown of broken Collection objects (#437, #444).

1.7.5 (2017-03-20)

Bug fixes:

  • Opening a data file in read (the default) mode with fiona.open() using thethe driver or drivers keyword arguments (to specify certain formatdrivers) would sometimes cause a crash on Windows due to improperlyterminated lists of strings (#428). The fix: Fiona’s buggy string_list()has been replaced by GDAL’s CSLAddString().

1.7.4 (2017-02-20)

Bug fixes:

  • OGR’s EsriJSON detection fails when certain keys aren’t found in the first6000 bytes of data passed to BytesCollection (#422). A .json file extensionis now explicitly given to the in-memory file behind BytesCollection whenthe driver=’GeoJSON’ keyword argument is given (#423).

1.7.3 (2017-02-14)

Roses are red.Tan is a pug.Software regression’sthe most embarrassing bug.

Bug fixes:

  • Use __stdcall for GDAL error handling callback on Windows as in Rasterio.

  • Turn on latent support for zip:// URLs in rio-cat and rio-info (#421).

  • The 1.7.2 release broke support for zip files with absolute paths (#418).This regression has been fixed with tests to confirm.

1.7.2 (2017-01-27)

Future Deprecation:

  • Collection.__next__() is buggy in that it can lead to duplication offeatures when used in combination with Collection.filter() orCollection.__iter__(). It will be removed in Fiona 2.0. Please check forusage of this deprecated feature by running your tests or programs withPYTHONWARNINGS=”always:::fiona” or -W”always:::fiona” and switch fromnext(collection) to next(iter(collection)) (#301).

Bug fix:

  • Zipped streams of bytes can be accessed by BytesCollection (#318).

1.7.1.post1 (2016-12-23)

1.7.1 (2016-11-16)

Bug Fixes:

  • Prevent Fiona from stumbling over ‘Z’, ‘M’, and ‘ZM’ geometry typesintroduced in GDAL 2.1 (#384). Fiona 1.7.1 doesn’t add explicit support forthese types, they are coerced to geometry types 1-7 (‘Point’, ‘LineString’,etc.)

  • Raise an UnsupportedGeometryTypeError when a bogus or unsupportedgeometry type is encountered in a new collection’s schema or elsewhere(#340).

  • Enable –precision 0 for fio-cat (#370).

  • Prevent datetime exceptions from unnecessarily stopping collection iterationby yielding None (#385)

  • Replace log.warn calls with log.warning calls (#379).

  • Print an error message if neither gdal-config or –gdalversion indicatea GDAL C API version when running setup.py (#364).

  • Let dict-like subclasses through CRS type checks (#367).

1.7.0post2 (2016-06-15)

Packaging: define extension modules for ‘clean’ and ‘config’ targets (#363).

1.7.0post1 (2016-06-15)

Packaging: No files are copied for the ‘clean’ setup target (#361, #362).

1.7.0 (2016-06-14)

The C extension modules in this library can now be built and used with eithera 1.x or 2.x release of the GDAL library. Big thanks to René Buffat forleading this effort.

Refactoring:

  • The ogrext1.pyx and ogrext2.pyx files now use separateC APIs defined in ogrext1.pxd and ogrex2.pxd. The other extensionmodules have been refactored so that they do not depend on either of thesemodules and use subsets of the GDAL/OGR API compatible with both GDAL 1.x and2.x (#359).

Packaging:

  • Source distributions now contain two different sources for theogrext extension module. The ogrext1.c file will be used with GDAL 1.xand the ogrext2.c file will be used with GDAL 2.x.

1.7b2 (2016-06-13)

  • New feature: enhancement of the –layer option for fio-cat and fio-dumpto allow separate layers of one or more multi-layer input files to beselected (#349).

1.7b1 (2016-06-10)

  • New feature: support for GDAL version 2+ (#259).

  • New feature: a new fio-calc CLI command (#273).

  • New feature: –layer options for fio-info (#316) and fio-load (#299).

  • New feature: a –no-parse option for fio-collect that lets a careful useravoid extra JSON serialization and deserialization (#306).

  • Bug fix: +wktext is now preserved when serializing CRS from WKT to PROJ.4dicts (#352).

  • Bug fix: a small memory leak when opening a collection has been fixed (#337).

  • Bug fix: internal unicode errors now result in a log message and aUnicodeError exception, not a TypeError (#356).

1.6.4 (2016-05-06)

  • Raise ImportError if the active GDAL library version is >= 2.0 instead offailing unpredictably (#338, #341). Support for GDAL>=2.0 is coming inFiona 1.7.

1.6.3.post1 (2016-03-27)

  • No changes to the library in this post-release version, but there is asignificant change to the distributions on PyPI: to help make Fiona morecompatible with Shapely on OS X, the GDAL shared library included in themacosx (only) binary wheels now statically links the GEOS library. Seehttps://github.com/sgillies/frs-wheel-builds/issues/5.

1.6.3 (2015-12-22)

  • Daytime has been decreasing in the Northern Hemisphere, but is nowincreasing again as it should.

  • Non-UTF strings were being passed into OGR functions in some situationsand on Windows this would sometimes crash a Python process (#303). Fionanow raises errors derived from UnicodeError when field names or fieldvalues can’t be encoded.

1.6.2 (2015-09-22)

  • Providing only PROJ4 representations in the dataset meta property resulted inloss of CRS information when using the fiona.open(…, **src.meta) as dstpattern (#265). This bug has been addressed by adding a crs_wkt item to the`meta property and extending the fiona.open() and the collection constructorto look for and prioritize this keyword argument.

1.6.1 (2015-08-12)

  • Bug fix: Fiona now deserializes JSON-encoded string properties provided bythe OGR GeoJSON driver (#244, #245, #246).

  • Bug fix: proj4 data was not copied properly into binary distributions due toa typo (#254).

Special thanks to WFMU DJ Liz Berg for the awesome playlist that’s fueling myrelease sprint. Check it out at https://wfmu.org/playlists/shows/62083. Youcan’t unhear Love Coffin.

1.6.0 (2015-07-21)

  • Upgrade Cython requirement to 0.22 (#214).

  • New BytesCollection class (#215).

  • Add GDAL’s OpenFileGDB driver to registered drivers (#221).

  • Implement CLI commands as plugins (#228).

  • Raise click.abort instead of calling sys.exit, preventing suprising exits(#236).

1.5.1 (2015-03-19)

  • Restore test data to sdists by fixing MANIFEST.in (#216).

1.5.0 (2015-02-02)

  • Finalize GeoJSON feature sequence options (#174).

  • Fix for reading of datasets that don’t support feature counting (#190).

  • New test dataset (#188).

  • Fix for encoding error (#191).

  • Remove confusing warning (#195).

  • Add data files for binary wheels (#196).

  • Add control over drivers enabled when reading datasets (#203).

  • Use cligj for CLI options involving GeoJSON (#204).

  • Fix fio-info –bounds help (#206).

1.4.8 (2014-11-02)

  • Add missing crs_wkt property as in Rasterio (#182).

1.4.7 (2014-10-28)

  • Fix setting of CRS from EPSG codes (#149).

1.4.6 (2014-10-21)

  • Handle 3D coordinates in bounds() #178.

1.4.5 (2014-10-18)

  • Add –bbox option to fio-cat (#163).

  • Skip geopackage tests if run from an sdist (#167).

  • Add fio-bounds and fio-distrib.

  • Restore fio-dump to working order.

1.4.4 (2014-10-13)

  • Fix accidental requirement on GDAL 1.11 introduced in 1.4.3 (#164).

1.4.3 (2014-10-10)

  • Add support for geopackage format (#160).

  • Add -f and –format aliases for –driver in CLI (#162).

  • Add –version option and env command to CLI.

1.4.2 (2014-10-03)

  • –dst-crs and –src-crs options for fio cat and collect (#159).

1.4.1 (2014-09-30)

  • Fix encoding bug in collection’s __getitem__ (#153).

1.4.0 (2014-09-22)

  • Add fio cat and fio collect commands (#150).

  • Return of Python 2.6 compatibility (#148).

  • Improved CRS support (#149).

1.3.0 (2014-09-17)

  • Add single metadata item accessors to fio inf (#142).

  • Move fio to setuptools entry point (#142).

  • Add fio dump and load commands (#143).

  • Remove fio translate command.

1.2.0 (2014-09-02)

  • Always show property width and precision in schema (#123).

  • Write datetime properties of features (#125).

  • Reset spatial filtering in filter() (#129).

  • Accept datetime.date objects as feature properties (#130).

  • Add slicing to collection iterators (#132).

  • Add geometry object masks to collection iterators (#136).

  • Change source layout to match Shapely and Rasterio (#138).

1.1.6 (2014-07-23)

  • Implement Collection __getitem__() (#112).

  • Leave GDAL finalization to the DLL’s destructor (#113).

  • Add Collection keys(), values(), items(), __contains__() (#114).

  • CRS bug fix (#116).

  • Add fio CLI program.

1.1.5 (2014-05-21)

  • Addition of cpl_errs context manager (#108).

  • Check for NULLs with ‘==’ test instead of ‘is’ (#109).

  • Open auxiliary files with encoding=’utf-8’ in setup for Python 3 (#110).

1.1.4 (2014-04-03)

  • Convert ‘long’ in schemas to ‘int’ (#101).

  • Carefully map Python schema to the possibly munged internal schema (#105).

  • Allow writing of features with geometry: None (#71).

1.1.3 (2014-03-23)

  • Always register all GDAL and OGR drivers when entering the DriverManagercontext (#80, #92).

  • Skip unsupported field types with a warning (#91).

  • Allow OGR config options to be passed to fiona.drivers() (#90, #93).

  • Add a bounds() function (#100).

  • Turn on GPX driver.

1.1.2 (2014-02-14)

  • Remove collection slice left in dumpgj (#88).

1.1.1 (2014-02-02)

  • Add an interactive file inspector like the one in rasterio.

  • CRS to_string bug fix (#83).

1.1 (2014-01-22)

  • Use a context manager to manage drivers (#78), a backwards compatible butbig change. Fiona is now compatible with rasterio and plays better with theosgeo package.

1.0.3 (2014-01-21)

  • Fix serialization of +init projections (#69).

1.0.2 (2013-09-09)

  • Smarter, better test setup (#65, #66, #67).

  • Add type=’Feature’ to records read from a Collection (#68).

  • Skip geometry validation when using GeoJSON driver (#61).

  • Dumpgj file description reports record properties as a list (as indict.items()) instead of a dict.

1.0.1 (2013-08-16)

  • Allow ordering of written fields and preservation of field order whenreading (#57).

1.0 (2013-07-30)

  • Add prop_type() function.

  • Allow UTF-8 encoded paths for Python 2 (#51). For Python 3, paths mustalways be str, never bytes.

  • Remove encoding from collection.meta, it’s a file creation option only.

  • Support for linking GDAL frameworks (#54).

0.16.1 (2013-07-02)

  • Add listlayers, open, prop_width to __init__py:__all__.

  • Reset reading of OGR layer whenever we ask for a collection iterator (#49).

0.16 (2013-06-24)

  • Add support for writing layers to multi-layer files.

  • Add tests to reach 100% Python code coverage.

0.15 (2013-06-06)

  • Get and set numeric field widths (#42).

  • Add support for multi-layer data sources (#17).

  • Add support for zip and tar virtual filesystems (#45).

  • Add listlayers() function.

  • Add GeoJSON to list of supported formats (#47).

  • Allow selection of layers by index or name.

0.14 (2013-05-04)

  • Add option to add JSON-LD in the dumpgj program.

  • Compare values to six.string_types in Collection constructor.

  • Add encoding to Collection.meta.

  • Document dumpgj in README.

0.13 (2013-04-30)

  • Python 2/3 compatibility in a single package. Pythons 2.6, 2.7, 3.3 now supported.

0.12.1 (2013-04-16)

  • Fix messed up linking of README in sdist (#39).

0.12 (2013-04-15)

  • Fix broken installation of extension modules (#35).

  • Log CPL errors at their matching Python log levels.

  • Use upper case for encoding names within OGR, lower case in Python.

0.11 (2013-04-14)

  • Cythonize .pyx files (#34).

  • Work with or around OGR’s internal recoding of record data (#35).

  • Fix bug in serialization of int/float PROJ.4 params.

0.10 (2013-03-23)

  • Add function to get the width of str type properties.

  • Handle validation and schema representation of 3D geometry types (#29).

  • Return {‘geometry’: None} in the case of a NULL geometry (#31).

0.9.1 (2013-03-07)

  • Silence the logger in ogrext.so (can be overridden).

  • Allow user specification of record field encoding (like ‘Windows-1252’ forNatural Earth shapefiles) to help when OGR can’t detect it.

0.9 (2013-03-06)

  • Accessing file metadata (crs, schema, bounds) on never inspected closed filesreturns None without exceptions.

  • Add a dict of supported_drivers and their supported modes.

  • Raise ValueError for unsupported drivers and modes.

  • Remove asserts from ogrext.pyx.

  • Add validate_record method to collections.

  • Add helpful coordinate system functions to fiona.crs.

  • Promote use of fiona.open over fiona.collection.

  • Handle Shapefile’s mix of LineString/Polygon and multis (#18).

  • Allow users to specify width of shapefile text fields (#20).

0.8 (2012-02-21)

  • Replaced .opened attribute with .closed (product of collection() is alwaysopened). Also a __del__() which will close a Collection, but still not to bedepended upon.

  • Added writerecords method.

  • Added a record buffer and better counting of records in a collection.

  • Manage one iterator per collection/session.

  • Added a read-only bounds property.

0.7 (2012-01-29)

  • Initial timezone-naive support for date, time, and datetime fields. Don’t usethese field types if you can avoid them. RFC 3339 datetimes in a string fieldare much better.

0.6.2 (2012-01-10)

  • Diagnose and set the driver property of collection in read mode.

  • Fail if collection paths are not to files. Multi-collection workspaces area (maybe) TODO.

0.6.1 (2012-01-06)

  • Handle the case of undefined crs for disk collections.

0.6 (2012-01-05)

  • Support for collection coordinate reference systems based on Proj4.

  • Redirect OGR warnings and errors to the Fiona log.

  • Assert that pointers returned from the ograpi functions are not NULL beforeusing.

0.5 (2011-12-19)

  • Support for reading and writing collections of any geometry type.

  • Feature and Geometry classes replaced by mappings (dicts).

  • Removal of Workspace class.

0.2 (2011-09-16)

  • Rename WorldMill to Fiona.

0.1.1 (2008-12-04)

  • Support for features with no geometry.

fiona (2024)

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Apr 24, 2024

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