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CHANGELOG

0.12.0 (xxxx-xx-xx)

Potentially breaking changes

  • Return JSON fields (as identified by GDAL) as dicts/lists in read_dataframe; these were previously returned as strings (#556).
  • Drop support for GDAL 3.4 and 3.5 (#584).

Improvements

  • Add listing of GDAL data types and subtypes to read_info (#556).
  • Add support to read list fields without arrow (#558).

Bug fixes

  • Fix decode error reading an sqlite file on windows (#568).
  • Fix wrong layername when creating .gpkg.zip file (#570).
  • Fix segfault on providing an invalid value for layer in read_info (#564).

Packaging

  • The GDAL library included in the wheels is upgraded from 3.10.3 to 3.11.4 (#578).
  • Add libkml driver to the wheels for more recent Linux platforms supported by manylinux_2_28, MacOS, and Windows (#561).
  • Add libspatialite to the wheels (#546).
  • Minimum required Python version is now 3.10 (#557).
  • Wheels are now available for Python 3.14 (#579).
  • Initial support for free-threaded Python builds, with the extension module declaring free-threaded support and wheels for Python 3.13t and 3.14t being built (#562).

0.11.1 (2025-08-02)

Bug fixes

  • Compatibility with Shapely >= 2.1 to avoid triggering a deprecation warning at import (#542).
  • Fix reading with a skip_features larger than the available number of features to ensure this consistently returns an empty result for all file formats (#550).

0.11.0 (2025-05-08)

Improvements

  • Capture all errors logged by gdal when opening a file fails (#495).
  • Add support to read and write ".gpkg.zip" (GDAL >= 3.7), ".shp.zip", and ".shz" files (#527).
  • Compatibility with the string dtype in the upcoming pandas 3.0 release (#493).

Bug fixes

  • Fix WKB writing on big-endian systems (#497).
  • Fix writing fids to e.g. GPKG file with use_arrow (#511).
  • Fix error in write_dataframe when writing an empty or all-None object column with use_arrow (#512).

Packaging

  • The GDAL library included in the wheels is upgraded from 3.9.2 to 3.10.3 (#499).

0.10.0 (2024-09-28)

Improvements

  • Add support to read, write, list, and remove /vsimem/ files (#457).
  • Raise specific error when trying to read non-UTF-8 file with use_arrow=True (#490).

Bug fixes

  • Silence warning from write_dataframe with GeoSeries.notna() (#435).
  • Enable mask & bbox filter when geometry column not read (#431).
  • Raise NotImplementedError when user attempts to write to an open file handle (#442).
  • Prevent seek on read from compressed inputs (#443).

Packaging

  • For the conda-forge package, change the dependency from libgdal to libgdal-core. This package is significantly smaller as it doesn't contain some large GDAL plugins. Extra plugins can be installed as seperate conda packages if needed: more info here. This also leads to pyproj becoming an optional dependency; you will need to install pyproj in order to support spatial reference systems (#452).
  • The GDAL library included in the wheels is updated from 3.8.5 to GDAL 3.9.2 (#466).
  • pyogrio now requires a minimum version of Python >= 3.9 (#473).
  • Wheels are now available for Python 3.13.

0.9.0 (2024-06-17)

Improvements

  • Add on_invalid parameter to read_dataframe (#422).

Bug fixes

  • Fixed bug transposing longitude and latitude when writing files with coordinate transformation from EPSG:4326 (#421).
  • Fix bug preventing reading from file paths containing hashes in read_dataframe (#412).

Packaging

  • MacOS wheels are now only available for macOS 12+. For older unsupported macOS versions, pyogrio can still be built from source (requires GDAL to be installed) (#417).
  • Remove usage of deprecated distutils in setup.py (#416).

0.8.0 (2024-05-06)

Improvements

  • Support for writing based on Arrow as the transfer mechanism of the data from Python to GDAL (requires GDAL >= 3.8). This is provided through the new pyogrio.raw.write_arrow function, or by using the use_arrow=True option in pyogrio.write_dataframe (#314, #346).
  • Add support for fids filter to read_arrow and open_arrow, and to read_dataframe with use_arrow=True (#304).
  • Add some missing properties to read_info, including layer name, geometry name and FID column name (#365).
  • read_arrow and open_arrow now provide GeoArrow-compliant extension metadata, including the CRS, when using GDAL 3.8 or higher (#366).
  • The open_arrow function can now be used without a pyarrow dependency. By default, it will now return a stream object implementing the Arrow PyCapsule Protocol (i.e. having an __arrow_c_stream__method). This object can then be consumed by your Arrow implementation of choice that supports this protocol. To keep the previous behaviour of returning a pyarrow.RecordBatchReader, specify use_pyarrow=True (#349).
  • Warn when reading from a multilayer file without specifying a layer (#362).
  • Allow writing to a new in-memory datasource using io.BytesIO object (#397).

Bug fixes

  • Fix error in write_dataframe if input has a date column and non-consecutive index values (#325).
  • Fix encoding issues on windows for some formats (e.g. ".csv") and always write ESRI Shapefiles using UTF-8 by default on all platforms (#361).
  • Raise exception in read_arrow or read_dataframe(..., use_arrow=True) if a boolean column is detected due to error in GDAL reading boolean values for FlatGeobuf / GPKG drivers (#335, #387); this has been fixed in GDAL >= 3.8.3.
  • Properly ignore fields not listed in columns parameter when reading from the data source not using the Arrow API (#391).
  • Properly handle decoding of ESRI Shapefiles with user-provided encoding option for read, read_dataframe, and open_arrow, and correctly encode Shapefile field names and text values to the user-provided encoding for write and write_dataframe (#384).
  • Fixed bug preventing reading from bytes or file-like in read_arrow / open_arrow (#407).

Packaging

  • The GDAL library included in the wheels is updated from 3.7.2 to GDAL 3.8.5.

Potentially breaking changes

  • Using a where expression combined with a list of columns that does not include the column referenced in the expression is not recommended and will now return results based on driver-dependent behavior, which may include either returning empty results (even if non-empty results are expected from where parameter) or raise an exception (#391). Previous versions of pyogrio incorrectly set ignored fields against the data source, allowing it to return non-empty results in these cases.

0.7.2 (2023-10-30)

Bug fixes

  • Add packaging as a dependency (#320).
  • Fix conversion of WKB to geometries with missing values when using pandas.ArrowDtype (#321).

0.7.1 (2023-10-26)

Bug fixes

  • Fix unspecified dependency on packaging (#318).

0.7.0 (2023-10-25)

Improvements

  • Support reading and writing datetimes with timezones (#253).
  • Support writing dataframes without geometry column (#267).
  • Calculate feature count by iterating over features if GDAL returns an unknown count for a data layer (e.g., OSM driver); this may have signficant performance impacts for some data sources that would otherwise return an unknown count (count is used in read_info, read, read_dataframe) (#271).
  • Add arrow_to_pandas_kwargs parameter to read_dataframe + reduce memory usage with use_arrow=True (#273)
  • In read_info, the result now also contains the total_bounds of the layer as well as some extra capabilities of the data source driver (#281).
  • Raise error if read or read_dataframe is called with parameters to read no columns, geometry, or fids (#280).
  • Automatically detect supported driver by extension for all available write drivers and addition of detect_write_driver (#270).
  • Addition of mask parameter to open_arrow, read, read_dataframe, and read_bounds functions to select only the features in the dataset that intersect the mask geometry (#285). Note: GDAL < 3.8.0 returns features that intersect the bounding box of the mask when using the Arrow interface for some drivers; this has been fixed in GDAL 3.8.0.
  • Removed warning when no features are read from the data source (#299).
  • Add support for force_2d=True with use_arrow=True in read_dataframe (#300).

Other changes

  • test suite requires Shapely >= 2.0

  • using skip_features greater than the number of features available in a data layer now returns empty arrays for read and an empty DataFrame for read_dataframe instead of raising a ValueError (#282).

  • enabled skip_features and max_features for read_arrow and read_dataframe(path, use_arrow=True). Note that this incurs overhead because all features up to the next batch size above max_features (or size of data layer) will be read prior to slicing out the requested range of features (#282).

  • The use_arrow=True option can be enabled globally for testing using the PYOGRIO_USE_ARROW=1 environment variable (#296).

Bug fixes

  • Fix int32 overflow when reading int64 columns (#260)
  • Fix fid_as_index=True doesn't set fid as index using read_dataframe with use_arrow=True (#265)
  • Fix errors reading OSM data due to invalid feature count and incorrect reading of OSM layers beyond the first layer (#271)
  • Always raise an exception if there is an error when writing a data source (#284)

Potentially breaking changes

  • In read_info (#281):
    • the features property in the result will now be -1 if calculating the feature count is an expensive operation for this driver. You can force it to be calculated using the force_feature_count parameter.
    • for boolean values in the capabilities property, the values will now be booleans instead of 1 or 0.

Packaging

  • The GDAL library included in the wheels is updated from 3.6.4 to GDAL 3.7.2.

0.6.0 (2023-04-27)

Improvements

  • Add automatic detection of 3D geometries in write_dataframe (#223, #229)
  • Add "driver" property to read_info result (#224)
  • Add support for dataset open options to read, read_dataframe, and read_info (#233)
  • Add support for pandas' nullable data types in write_dataframe, or specifying a mask manually for missing values in write (#219)
  • Standardized 3-dimensional geometry type labels from "2.5D " to " Z" for consistency with well-known text (WKT) formats (#234)
  • Failure error messages from GDAL are no longer printed to stderr (they were already translated into Python exceptions as well) (#236).
  • Failure and warning error messages from GDAL are no longer printed to stderr: failures were already translated into Python exceptions and warning messages are now translated into Python warnings (#236, #242).
  • Add access to low-level pyarrow RecordBatchReader via pyogrio.raw.open_arrow, which allows iterating over batches of Arrow tables (#205).
  • Add support for writing dataset and layer metadata (where supported by driver) to write and write_dataframe, and add support for reading dataset and layer metadata in read_info (#237).

Packaging

  • The GDAL library included in the wheels is updated from 3.6.2 to GDAL 3.6.4.
  • Wheels are now available for Linux aarch64 / arm64.

0.5.1 (2023-01-26)

Bug fixes

  • Fix memory leak in reading files (#207)
  • Fix to only use transactions for writing records when supported by the driver (#203)

0.5.0 (2023-01-16)

Major enhancements

  • Support for reading based on Arrow as the transfer mechanism of the data from GDAL to Python (requires GDAL >= 3.6 and pyarrow to be installed). This can be enabled by passing use_arrow=True to pyogrio.read_dataframe (or by using pyogrio.raw.read_arrow directly), and provides a further speed-up (#155, #191).
  • Support for appending to an existing data source when supported by GDAL by passing append=True to pyogrio.write_dataframe (#197).

Potentially breaking changes

  • In floating point columns, NaN values are now by default written as "null" instead of NaN, but with an option to control this (pass nan_as_null=False to keep the previous behaviour) (#190).

Improvements

  • It is now possible to pass GDAL's dataset creation options in addition to layer creation options in pyogrio.write_dataframe (#189).
  • When specifying a subset of columns to read, unnecessary IO or parsing is now avoided (#195).

Packaging

  • The GDAL library included in the wheels is updated from 3.4 to GDAL 3.6.2, and is now built with GEOS and sqlite with rtree support enabled (which allows writing a spatial index for GeoPackage).
  • Wheels are now available for Python 3.11.
  • Wheels are now available for MacOS arm64.

0.4.2 (2022-10-06)

Improvements

  • new get_gdal_data_path() utility funtion to check the path of the data directory detected by GDAL (#160)

Bug fixes

  • register GDAL drivers during initial import of pyogrio (#145)
  • support writing "not a time" (NaT) values in a datetime column (#146)
  • fixes an error when reading GPKG with bbox filter (#150)
  • properly raises error when invalid where clause is used on a GPKG (#150)
  • avoid duplicate count of available features (#151)

0.4.1 (2022-07-25)

Bug fixes

  • use user-provided encoding when reading files instead of using default encoding of data source type (#139)
  • always convert curve or surface geometry types to linear geometry types, such as lines or polygons (#140)

0.4.0 (2022-06-20)

Major enhancements

  • support for reading from file-like objects and in-memory buffers (#25)
  • index of GeoDataFrame created by read_dataframe can now optionally be set to the FID of the features that are read, as int64 dtype. Note that some drivers start FID numbering at 0 whereas others start numbering at 1.
  • generalize check for VSI files from /vsizip to /vsi (#29)
  • add dtype for each field to read_info (#30)
  • support writing empty GeoDataFrames (#38)
  • support URI schemes (zip://, s3://) (#43)
  • add keyword to promote mixed singular/multi geometry column to multi geometry type (#56)
  • Python wheels built for Windows, MacOS (x86_64), and Linux (x86_64) (#49, #55, #57, #61, #63)
  • automatically prefix zip files with URI scheme (#68)
  • support use of a sql statement in read_dataframe (#70)
  • correctly write geometry type for layer when dataset has multiple geometry types (#82)
  • support reading bool, int16, float32 into correct dtypes (#83)
  • add geometry_type to write_dataframe to set geometry type for layer (#85)
  • Use certifi to set GDAL_CURL_CA_BUNDLE / PROJ_CURL_CA_BUNDLE defaults (#97)
  • automatically detect driver for .geojson, .geojsonl and .geojsons files (#101)
  • read DateTime fields with millisecond accuracy (#111)
  • support writing object columns with np.nan values (#118)
  • add support to write object columns that contain types different than string (#125)
  • support writing datetime columns (#120)
  • support for writing missing (null) geometries (#59)

Breaking changes

  • read now also returns an optional FIDs ndarray in addition to meta, geometries, and fields; this is the 2nd item in the returned tuple.

Potentially breaking changes

  • Consolidated error handling to better use GDAL error messages and specific exception classes (#39). Note that this is a breaking change only if you are relying on specific error classes to be emitted.
  • by default, writing GeoDataFrames with mixed singular and multi geometry types will automatically promote to the multi type if the driver does not support mixed geometry types (e.g., FGB, though it can write mixed geometry types if geometry_type is set to "Unknown")
  • the geometry type of datasets with multiple geometry types will be set to "Unknown" unless overridden using geometry_type. Note: "Unknown" may be ignored by some drivers (e.g., shapefile)

Bug fixes

  • use dtype object instead of numpy.object to eliminate deprecation warnings (#34)
  • raise error if layer cannot be opened (#35)
  • fix passing gdal creation parameters in write_dataframe (#62)
  • fix passing kwargs to GDAL in write_dataframe (#67)

Changes from 0.4.0a1

  • layer_geometry_type introduced in 0.4.0a1 was renamed to geometry_type for consistency

Contributors

People with a “+” by their names contributed a patch for the first time.

  • Brendan Ward
  • Joris Van den Bossche
  • Martin Fleischmann
  • Pieter Roggemans +
  • Wei Ji Leong +

0.3.0 (2021-12-22)

Major enhancements

  • Auto-discovery of GDAL_VERSION on Windows, if gdalinfo.exe is discoverable on the PATH.
  • Addition of read_bounds function to read the bounds of each feature.
  • Addition of a fids keyword to read and read_dataframe to selectively read features based on a list of the FIDs.

0.2.0 (2021-04-02)

Major enhancements

  • initial support for building on Windows.
  • Windows: enabled search for GDAL dll directory for Python >= 3.8.
  • Addition of where parameter to read and read_dataframe to enable GDAL-compatible SQL WHERE queries to filter data sources.
  • Addition of force_2d parameter to read and read_dataframe to force coordinates to always be returned as 2 dimensional, dropping the 3rd dimension if present.
  • Addition of bbox parameter to read and read_dataframe to select only the features in the dataset that intersect the bbox.
  • Addition of set_gdal_config_options to set GDAL configuration options and get_gdal_config_option to get a GDAL configuration option.
  • Addition of pyogrio.__gdal_version__ attribute to return GDAL version tuple and __gdal_version_string__ to return string version.
  • Addition of list_drivers function to list all available GDAL drivers.
  • Addition of read and write support for FlatGeobuf driver when available in GDAL.

0.1.0 (2020-08-28)

Major enhancements

  • Addition of list_layers to list layers in a data source.
  • Addition of read_info to read basic information for a layer.
  • Addition of read_dataframe to read from supported file formats (Shapefile, GeoPackage, GeoJSON) into GeoDataFrames.
  • Addition of write_dataframe to write GeoDataFrames into supported file formats.