File: CHANGES.txt

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Changes
=======

1.6.4 (2017-01-24)
------------------

- Handle a ``TypeError`` that can occur when geometries are torn down (#473,
  #528).

- 
1.6.3 (2017-12-09)
------------------

- AttributeError is no longer raised when accessing __geo_interface__ of an
  empty polygon (#450).
- ``asShape`` now handles empty coordinates in mappings as ``shape`` does
  (#542). Please note that ``asShape`` is likely to be deprecated in a future
  version of Shapely.
- Check for length of LineString coordinates in speed mode, preventing crashes
  when using LineStrings with only one coordinate (#546).

1.6.2 (2017-10-30)
------------------

- A 1.6.2.post1 release has been made to fix a problem with macosx wheels
  uploaded to PyPI.

1.6.2 (2017-10-26)
------------------

- Splitting a linestring by one of its end points will now succeed instead of
  failing with a ``ValueError`` (#524, #533).
- Missing documentation of a geometry's ``overlaps`` predicate has been added
  (#522).

1.6.1 (2017-09-01)
------------------

- Avoid ``STRTree`` crashes due to dangling references (#505) by maintaining
  references to added geometries.
- Reduce log level to debug when reporting on calls to ctypes ``CDLL()`` that
  don't succeed and are retried (#515).
- Clarification: applications like GeoPandas that need an empty geometry object
  should use ``BaseGeometry()`` instead of ``Point()`` or ``Polygon()``. An
  ``EmptyGeometry`` class has been added in the master development branch and
  will be available in the next non-bugfix release.

1.6.0 (2017-08-21)
------------------

Shapely 1.6.0 adds new attributes to existing geometry classes and new
functions (``split()`` and ``polylabel()``) to the shapely.ops module.
Exceptions are consolidated in a shapely.errors module and logging practices
have been improved. Shapely's optional features depending on Numpy are now
gathered into a requirements set named "vectorized" and these may be installed
like ``pip install shapely[vectorized]``.

Much of the work on 1.6.0 was aimed to improve the project's build and
packaging scripts and to minimize run-time dependencies. Shapely now vendorizes
packaging to use during builds only and never again invokes the geos-config
utility at run-time.

In addition to the changes listed under the alpha and beta pre-releases below,
the following change has been made to the project:

- Project documentation is now hosted at 
  https://shapely.readthedocs.io/en/latest/.

Thank you all for using, promoting, and contributing to the Shapely project.

1.6b5 (2017-08-18)
------------------

Bug fixes:

- Passing a single coordinate to ``LineString()`` with speedups disabled now
  raises a ValueError as happens with speedups enabled. This resolves #509.

1.6b4 (2017-02-15)
------------------

Bug fixes:

- Isolate vendorized packaging in a _vendor directory, remove obsolete
  dist-info, and remove packaging from project requirements (resolves #468).

1.6b3 (2016-12-31)
------------------

Bug fixes:

- Level for log messages originating from the GEOS notice handler reduced from
  WARNING to INFO (#447).
- Permit speedups to be imported again without Numpy (#444).

1.6b2 (2016-12-12)
------------------

New features:

- Add support for GeometryCollection to shape and asShape functions (#422).

1.6b1 (2016-12-12)
------------------

Bug fixes:

- Implemented __array_interface__ for empty Points and LineStrings (#403).

1.6a3 (2016-12-01)
------------------

Bug fixes:

- Remove accidental hard requirement of Numpy (#431).

Packaging:

- Put Numpy in an optional requirement set named "vectorized" (#431).

1.6a2 (2016-11-09)
------------------

Bug fixes:

- Shapely no longer configures logging in ``geos.py`` (#415).

Refactoring:

- Consolidation of exceptions in ``shapely.errors``.
- ``UnsupportedGEOSVersionError`` is raised when GEOS < 3.3.0 (#407).

Packaging:

- Added new library search paths to assist Anaconda (#413).
- geos-config will now be bypassed when NO_GEOS_CONFIG env var is set. This
  allows configuration of Shapely builds on Linux systems that for whatever
  reasons do not include the geos-config program (#322).

1.6a1 (2016-09-14)
------------------

New features:

- A new error derived from NotImplementedError, with a more useful message, is
  raised when the GEOS backend doesn't support a called method (#216).
- The ``project()`` method of LineString has been extended to LinearRing
  geometries (#286).
- A new ``minimum_rotated_rectangle`` attribute has been added to the base
  geometry class (#354).
- A new ``shapely.ops.polylabel()`` function has been added. It
  computes a point suited for labeling concave polygons (#395).
- A new ``shapely.ops.split()`` function has been added. It splits a
  geometry by another geometry of lesser dimension: polygon by line, line by
  point (#293, #371).
- ``Polygon.from_bounds()`` constructs a Polygon from bounding coordinates
  (#392).
- Support for testing with Numpy 1.4.1 has been added (#301).
- Support creating all kinds of empty geometries from empty lists of Python
  objects (#397, #404).

Refactoring:

- Switch from ``SingleSidedBuffer()`` to ``OffsetCurve()`` for GEOS >= 3.3
  (#270).
- Cython speedups are now enabled by default (#252).

Packaging:

- Packaging 16.7, a setup dependency, is vendorized (#314).
- Infrastructure for building manylinux1 wheels has been added (#391).
- The system's ``geos-config`` program is now only checked when ``setup.py``
  is executed, never during normal use of the module (#244).
- Added new library search paths to assist PyInstaller (#382) and Windows
  (#343).

1.5.17 (2016-08-31)
-------------------
- Bug fix: eliminate memory leak in geom_factory() (#408).
- Bug fix: remove mention of negative distances in parallel_offset and note
  that vertices of right hand offset lines are reversed (#284).

1.5.16 (2016-05-26)
-------------------
- Bug fix: eliminate memory leak when unpickling geometry objects (#384, #385).
- Bug fix: prevent crashes when attempting to pickle a prepared geometry,
  raising ``PicklingError`` instead (#386).
- Packaging: extension modules in the OS X wheels uploaded to PyPI link only
  libgeos_c.dylib now (you can verify and compare to previous releases with
  ``otool -L shapely/vectorized/_vectorized.so``).

1.5.15 (2016-03-29)
-------------------
- Bug fix: use uintptr_t to store pointers instead of long in _geos.pxi,
  preventing an overflow error (#372, #373). Note that this bug fix was
  erroneously reported to have been made in 1.5.14, but was not.

1.5.14 (2016-03-27)
-------------------
- Bug fix: use ``type()`` instead of ``isinstance()`` when evaluating geometry
  equality, preventing instances of base and derived classes from 
  being mistaken for equals (#317).
- Bug fix: ensure that empty geometries are created when constructors have no
  args (#332, #333).
- Bug fix: support app "freezing" better on Windows by not relying on the
  ``__file__`` attribute (#342, #377).
- Bug fix: ensure that empty polygons evaluate to be ``==`` (#355).
- Bug fix: filter out empty geometries that can cause segfaults when creating
  and loading STRtrees (#345, #348).
- Bug fix: no longer attempt to reuse GEOS DLLs already loaded by Rasterio
  or Fiona on OS X (#374, #375).

1.5.13 (2015-10-09)
-------------------
- Restore setup and runtime discovery and loading of GEOS shared library to
  state at version 1.5.9 (#326).
- On OS X we try to reuse any GEOS shared library that may have been loaded
  via import of Fiona or Rasterio in order to avoid a bug involving the
  GEOS AbstractSTRtree (#324, #327).

1.5.12 (2015-08-27)
-------------------
- Remove configuration of root logger from libgeos.py (#312).
- Skip test_fallbacks on Windows (#308).
- Call setlocale(locale.LC_ALL, "") instead of resetlocale() on Windows when
  tearing down the locale test (#308).
- Fix for Sphinx warnings (#309).
- Addition of .cache, .idea, .pyd, .pdb to .gitignore (#310).

1.5.11 (2015-08-23)
-------------------
- Remove packaging module requirement added in 1.5.10 (#305). Distutils can't 
  parse versions using 'rc', but if we stick to 'a' and 'b' we will be fine.

1.5.10 (2015-08-22)
-------------------
- Monkey patch affinity module by absolute reference (#299).
- Raise TopologicalError in relate() instead of crashing (#294, #295, #303).

1.5.9 (2015-05-27)
------------------
- Fix for 64 bit speedups compatibility (#274).

1.5.8 (2015-04-29)
------------------
- Setup file encoding bug fix (#254).
- Support for pyinstaller (#261).
- Major prepared geometry operation fix for Windows (#268, #269).
- Major fix for OS X binary wheel (#262).

1.5.7 (2015-03-16)
------------------
- Test and fix buggy error and notice handlers (#249).

1.5.6 (2015-02-02)
------------------
- Fix setup regression (#232, #234).
- SVG representation improvements (#233, #237).

1.5.5 (2015-01-20)
------------------
- MANIFEST changes to restore _geox.pxi (#231).

1.5.4 (2015-01-19)
------------------
- Fixed OS X binary wheel library load path (#224).

1.5.3 (2015-01-12)
------------------
- Fixed ownership and potential memory leak in polygonize (#223).
- Wider release of binary wheels for OS X.

1.5.2 (2015-01-04)
------------------
- Fail installation if GEOS dependency is not met, preventing update breakage
  (#218, #219).

1.5.1 (2014-12-04)
------------------
- Restore geometry hashing (#209).

1.5.0 (2014-12-02)
------------------
- Affine transformation speedups (#197).
- New `==` rich comparison (#195).
- Geometry collection constructor (#200).
- ops.snap() backed by GEOSSnap (#201).
- Clearer exceptions in cases of topological invalidity (#203).

1.4.4 (2014-11-02)
------------------
- Proper conversion of numpy float32 vals to coords (#186).

1.4.3 (2014-10-01)
------------------
- Fix for endianness bug in WKB writer (#174).

1.4.2 (2014-09-29)
------------------
- Fix bungled 1.4.1 release (#176).

1.4.1 (2014-09-23)
------------------
- Return of support for GEOS 3.2 (#176, #178).

1.4.0 (2014-09-08)
------------------
- SVG representations for IPython's inline image protocol.
- Efficient and fast vectorized contains().
- Change mitre_limit default to 5.0; raise ValueError with 0.0 (#139).
- Allow mix of tuples and Points in sped-up LineString ctor (#152).
- New STRtree class (#73).
- Add ops.nearest_points() (#147).
- Faster creation of geometric objects from others (cloning) (#165).
- Removal of tests from package.

1.3.3 (2014-07-23)
------------------
- Allow single-part geometries as argument to ops.cacaded_union() (#135).
- Support affine transformations of LinearRings (#112).

1.3.2 (2014-05-13)
------------------
- Let LineString() take a sequence of Points (#130).

1.3.1 (2014-04-22)
------------------
- More reliable proxy cleanup on exit (#106).
- More robust DLL loading on all platforms (#114).

1.3.0 (2013-12-31)
------------------
- Include support for Python 3.2 and 3.3 (#56), minimum version is now 2.6.
- Switch to GEOS WKT/WKB Reader/Writer API, with defaults changed to enable 3D
  output dimensions, and to 'trim' WKT output for GEOS >=3.3.0.
- Use GEOS version instead of GEOS C API version to determine library
  capabilities (#65).

1.2.19 (2013-12-30)
-------------------
- Add buffering style options (#55).

1.2.18 (2013-07-23)
--------------------
- Add shapely.ops.transform.
- Permit empty sequences in collection constructors (#49, #50).
- Individual polygons in MultiPolygon.__geo_interface__ are changed to tuples
  to match Polygon.__geo_interface__ (#51).
- Add shapely.ops.polygonize_full (#57).

1.2.17 (2013-01-27)
-------------------
- Avoid circular import between wkt/wkb and geometry.base by moving calls
  to GEOS serializers to the latter module.
- Set _ndim when unpickling (issue #6).
- Don't install DLLs to Python's DLL directory (#37).
- Add affinity module of affine transformation (#31).
- Fix NameError that blocked installation with PyPy (#40, #41).

1.2.16 (2012-09-18)
-------------------
- Add ops.unary_union function.
- Alias ops.cascaded_union to ops.unary_union when GEOS CAPI >= (1,7,0).
- Add geos_version_string attribute to shapely.geos.
- Ensure parent is set when child geometry is accessed.
- Generate _speedups.c using Cython when building from repo when missing,
  stale, or the build target is "sdist".
- The is_simple predicate of invalid, self-intersecting linear rings now
  returns ``False``.
- Remove VERSION.txt from repo, it's now written by the distutils setup script
  with value of shapely.__version__.

1.2.15 (2012-06-27)
-------------------
- Eliminate numerical sensitivity in a method chaining test (Debian bug
  #663210).
- Account for cascaded union of random buffered test points being a polygon
  or multipolygon (Debian bug #666655).
- Use Cython to build speedups if it is installed.
- Avoid stumbling over SVN revision numbers in GEOS C API version strings.

1.2.14 (2012-01-23)
-------------------
- A geometry's coords property is now sliceable, yielding a list of coordinate
  values.
- Homogeneous collections are now sliceable, yielding a new collection of the
  same type.

1.2.13 (2011-09-16)
-------------------
- Fixed errors in speedups on 32bit systems when GEOS references memory above
  2GB.
- Add shapely.__version__ attribute.
- Update the manual.

1.2.12 (2011-08-15)
-------------------
- Build Windows distributions with VC7 or VC9 as appropriate.
- More verbose report on failure to speed up.
- Fix for prepared geometries broken in 1.2.11.
- DO NOT INSTALL 1.2.11

1.2.11 (2011-08-04)
-------------------
- Ignore AttributeError during exit.
- PyPy 1.5 support.
- Prevent operation on prepared geometry crasher (#12).
- Optional Cython speedups for Windows.
- Linux 3 platform support.

1.2.10 (2011-05-09)
-------------------
- Add optional Cython speedups.
- Add is_cww predicate to LinearRing.
- Add function that forces orientation of Polygons.
- Disable build of speedups on Windows pending packaging work.

1.2.9 (2011-03-31)
------------------
- Remove extra glob import.
- Move examples to shapely.examples.
- Add box() constructor for rectangular polygons.
- Fix extraneous imports.

1.2.8 (2011-12-03)
------------------
- New parallel_offset method (#6).
- Support for Python 2.4.

1.2.7 (2010-11-05)
------------------
- Support for Windows eggs.

1.2.6 (2010-10-21)
------------------
- The geoms property of an empty collection yields [] instead of a ValueError
  (#3).
- The coords and geometry type sproperties have the same behavior as above.
- Ensure that z values carry through into products of operations (#4).

1.2.5 (2010-09-19)
------------------
- Stop distributing docs/_build.
- Include library fallbacks in test_dlls.py for linux platform.

1.2.4 (2010-09-09)
------------------
- Raise AttributeError when there's no backend support for a method.
- Raise OSError if libgeos_c.so (or variants) can't be found and loaded.
- Add geos_c DLL loading support for linux platforms where find_library doesn't
  work.

1.2.3 (2010-08-17)
------------------
- Add mapping function.
- Fix problem with GEOSisValidReason symbol for GEOS < 3.1.

1.2.2 (2010-07-23)
------------------
- Add representative_point method.

1.2.1 (2010-06-23)
------------------
- Fixed bounds of singular polygons.
- Added shapely.validation.explain_validity function (#226).

1.2 (2010-05-27)
----------------
- Final release.

1.2rc2 (2010-05-26)
-------------------
- Add examples and tests to MANIFEST.in.
- Release candidate 2.

1.2rc1 (2010-05-25)
-------------------
- Release candidate.

1.2b7 (2010-04-22)
------------------
- Memory leak associated with new empty geometry state fixed.

1.2b6 (2010-04-13)
------------------
- Broken GeometryCollection fixed.

1.2b5 (2010-04-09)
------------------
- Objects can be constructed from others of the same type, thereby making
  copies. Collections can be constructed from sequences of objects, also making
  copies.
- Collections are now iterators over their component objects.
- New code for manual figures, using the descartes package.

1.2b4 (2010-03-19)
------------------
- Adds support for the "sunos5" platform.

1.2b3 (2010-02-28)
------------------
- Only provide simplification implementations for GEOS C API >= 1.5.

1.2b2 (2010-02-19)
------------------
- Fix cascaded_union bug introduced in 1.2b1 (#212).

1.2b1 (2010-02-18)
------------------
- Update the README. Remove cruft from setup.py. Add some version 1.2 metadata
  regarding required Python version (>=2.5,<3) and external dependency
  (libgeos_c >= 3.1).

1.2a6 (2010-02-09)
------------------
- Add accessor for separate arrays of X and Y values (#210).

TODO: fill gap here

1.2a1 (2010-01-20)
------------------
- Proper prototyping of WKB writer, and avoidance of errors on 64-bit systems
  (#191).
- Prototype libgeos_c functions in a way that lets py2exe apps import shapely
  (#189).

1.2 Branched (2009-09-19)

1.0.12 (2009-04-09)
-------------------
- Fix for references held by topology and predicate descriptors.

1.0.11 (2008-11-20)
-------------------
- Work around bug in GEOS 2.2.3, GEOSCoordSeq_getOrdinate not exported properly
  (#178).

1.0.10 (2008-11-17)
-------------------
- Fixed compatibility with GEOS 2.2.3 that was broken in 1.0.8 release (#176).

1.0.9 (2008-11-16)
------------------
- Find and load MacPorts libgeos.

1.0.8 (2008-11-01)
------------------
- Fill out GEOS function result and argument types to prevent faults on a
  64-bit arch.

1.0.7 (2008-08-22)
------------------
- Polygon rings now have the same dimensions as parent (#168).
- Eliminated reference cycles in polygons (#169).

1.0.6 (2008-07-10)
------------------
- Fixed adaptation of multi polygon data.
- Raise exceptions earlier from binary predicates.
- Beginning distributing new windows DLLs (#166).

1.0.5 (2008-05-20)
------------------
- Added access to GEOS polygonizer function.
- Raise exception when insufficient coordinate tuples are passed to LinearRing
  constructor (#164).

1.0.4 (2008-05-01)
------------------
- Disentangle Python and topological equality (#163).
- Add shape(), a factory that copies coordinates from a geo interface provider.
  To be used instead of asShape() unless you really need to store coordinates
  outside shapely for efficient use in other code.
- Cache GEOS geometries in adapters (#163).

1.0.3 (2008-04-09)
------------------
- Do not release GIL when calling GEOS functions (#158).
- Prevent faults when chaining multiple GEOS operators (#159).

1.0.2 (2008-02-26)
------------------
- Fix loss of dimensionality in polygon rings (#155).

1.0.1 (2008-02-08)
------------------
- Allow chaining expressions involving coordinate sequences and geometry parts
  (#151).
- Protect against abnormal use of coordinate accessors (#152).
- Coordinate sequences now implement the numpy array protocol (#153).

1.0 (2008-01-18)
----------------
- Final release.

1.0 RC2 (2008-01-16)
--------------------
- Added temporary solution for #149.

1.0 RC1 (2008-01-14)
--------------------
- First release candidate