[Scipy-svn] r6679 - trunk/doc/release

scipy-svn@scip... scipy-svn@scip...
Sat Sep 4 18:33:08 CDT 2010

Author: ptvirtan
Date: 2010-09-04 18:33:08 -0500 (Sat, 04 Sep 2010)
New Revision: 6679

DOC: release: add initial 0.9.0 release notes

Added: trunk/doc/release/0.9.0-notes.rst
--- trunk/doc/release/0.9.0-notes.rst	                        (rev 0)
+++ trunk/doc/release/0.9.0-notes.rst	2010-09-04 23:33:08 UTC (rev 6679)
@@ -0,0 +1,102 @@
+SciPy 0.9.0 Release Notes
+.. note:: Scipy 0.9.0 is not released yet!
+.. contents::
+SciPy 0.9.0 is the culmination of XXX months of hard work. It contains
+many new features, numerous bug-fixes, improved test coverage and
+better documentation.  There have been a number of deprecations and
+API changes in this release, which are documented below.  All users
+are encouraged to upgrade to this release, as there are a large number
+of bug-fixes and optimizations.  Moreover, our development attention
+will now shift to bug-fix releases on the 0.9.x branch, and on adding
+new features on the development trunk.
+This release requires Python 2.4 - 2.7 or 3.1 - and NumPy 1.5 or greater.
+Please note that SciPy is still considered to have "Beta" status, as
+we work toward a SciPy 1.0.0 release.  The 1.0.0 release will mark a
+major milestone in the development of SciPy, after which changing the
+package structure or API will be much more difficult.  Whilst these
+pre-1.0 releases are considered to have "Beta" status, we are
+committed to making them as bug-free as possible.  For example, in
+addition to fixing numerous bugs in this release, we have also doubled
+the number of unit tests since the last release.
+However, until the 1.0 release, we are aggressively reviewing and
+refining the functionality, organization, and interface. This is being
+done in an effort to make the package as coherent, intuitive, and
+useful as possible.  To achieve this, we need help from the community
+of users.  Specifically, we need feedback regarding all aspects of the
+project - everything - from which algorithms we implement, to details
+about our function's call signatures.
+Python 3
+.. note:: This is the goal, we aren't there yet!
+Scipy 0.9.0 is the first release to have full support for Python 3.
+Deprecated features
+Obsolete nonlinear solvers (in ``scipy.optimize``)
+The following nonlinear solvers from ``scipy.optimize`` are
+- ``broyden_modified`` (bad performance)
+- ``broyden1_modified`` (bad performance)
+- ``broyden_generalized`` (equivalent to ``anderson``)
+- ``anderson2`` (equivalent to ``anderson``)
+- ``broyden3`` (obsoleted by new limited-memory broyden methods)
+- ``vackar`` (renamed to ``diagbroyden``)
+New features
+Delaunay tesselations (``scipy.spatial``)
+Scipy now includes routines for computing Delaunay tesselations in N
+dimensions, powered by the Qhull_ computational geometry library. Such
+calculations can now make use of the new ``scipy.spatial.Delaunay``
+.. _Qhull: http://www.qhull.org/
+N-dimensional interpolation (``scipy.interpolate``)
+Support for scattered data interpolation is now significantly
+improved.  This version includes a ``scipy.interpolate.griddata``
+function that can perform linear and nearest-neighbour interpolation
+for N-dimensional scattered data, in addition to cubic spline
+(C1-smooth) interpolation in 2D and 1D.  An object-oriented interface
+to each interpolator type is also available.
+Nonlinear equation solvers (``scipy.optimize``)
+Scipy includes new routines for large-scale nonlinear equation solving
+in ``scipy.optimize``.  The following methods are implemented:
+* Newton-Krylov (``scipy.optimize.newton_krylov``)
+* (Generalized) secant methods:
+  - Limited-memory Broyden methods (``scipy.optimize.broyden1``,
+    ``scipy.optimize.broyden2``)
+  - Anderson method (``scipy.optimize.anderson``)
+* Simple iterations (``scipy.optimize.diagbroyden``,
+  ``scipy.optimize.excitingmixing``, ``scipy.optimize.linearmixing``)
+The ``scipy.optimize.nonlin`` module was completely rewritten, and
+some of the functions were deprecated (see above).
+Removed features

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