Mailman 3 April 2019 - SciPy-Dev

scipy.org logo original?
by Ralf Gommers May 5, 2019

May 5, 2019

Hi, Does anyone have the original files from which the current logo on scipy.org (it has the scipy symbol, white letter scipy.org and "sponsored by Enthough") was created? The quality is not great, and editing a tiny gif doesn't make it better .... Thanks, Ralf

7 19

ANN: SciPy 1.3.0rc1 -- please test
by Tyler Reddy May 1, 2019

May 1, 2019

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, On behalf of the SciPy development team I'm pleased to announce the release candidate SciPy 1.3.0rc1. Please help us test this pre-release. Sources and binary wheels can be found at:https://pypi.org/project/scipy/ and at:https://github.com/scipy/scipy/releases/tag/v1.3.0rc1 One of a few ways to install the release candidate with pip: pip install scipy==1.3.0rc1 ========================== SciPy 1.3.0 Release Notes ========================== Note: Scipy 1.3.0 is not released yet! SciPy 1.3.0 is the culmination of 5 months of hard work. It contains many new features, numerous bug-fixes, improved test coverage and better documentation. There have been some 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. Before upgrading, we recommend that users check that their own code does not use deprecated SciPy functionality (to do so, run your code with ``python -Wd`` and check for ``DeprecationWarning`` s). Our development attention will now shift to bug-fix releases on the 1.3.x branch, and on adding new features on the master branch. This release requires Python 3.5+ and NumPy 1.13.3 or greater. For running on PyPy, PyPy3 6.0+ and NumPy 1.15.0 are required. Highlights of this release -------------------------- - Three new ``stats`` functions, a rewrite of ``pearsonr``, and an exact computation of the Kolmogorov-Smirnov two-sample test - A new Cython API for bounded scalar-function root-finders in `scipy.optimize` - Substantial ``CSR`` and ``CSC`` sparse matrix indexing performance improvements - Added support for interpolation of rotations with continuous angular rate and acceleration in ``RotationSpline`` New features ============ `scipy.interpolate` improvements -------------------------------- A new class ``CubicHermiteSpline`` is introduced. It is a piecewise-cubic interpolator which matches observed values and first derivatives. Existing cubic interpolators ``CubicSpline``, ``PchipInterpolator`` and ``Akima1DInterpolator`` were made subclasses of ``CubicHermiteSpline``. `scipy.io` improvements ----------------------- For the Attribute-Relation File Format (ARFF) `scipy.io.arff.loadarff` now supports relational attributes. `scipy.io.mmread` can now parse Matrix Market format files with empty lines. `scipy.linalg` improvements --------------------------- Added wrappers for ``?syconv`` routines, which convert a symmetric matrix given by a triangular matrix factorization into two matrices and vice versa. `scipy.linalg.clarkson_woodruff_transform` now uses an algorithm that leverages sparsity. This may provide a 60-90 percent speedup for dense input matrices. Truly sparse input matrices should also benefit from the improved sketch algorithm, which now correctly runs in ``O(nnz(A))`` time. Added new functions to calculate symmetric Fiedler matrices and Fiedler companion matrices, named `scipy.linalg.fiedler` and `scipy.linalg.fiedler_companion`, respectively. These may be used for root finding. `scipy.ndimage` improvements ---------------------------- Gaussian filter performances may improve by an order of magnitude in some cases, thanks to removal of a dependence on ``np.polynomial``. This may impact `scipy.ndimage.gaussian_filter` for example. `scipy.optimize` improvements ----------------------------- The `scipy.optimize.brute` minimizer obtained a new keyword ``workers``, which can be used to parallelize computation. A Cython API for bounded scalar-function root-finders in `scipy.optimize` is available in a new module `scipy.optimize.cython_optimize` via ``cimport``. This API may be used with ``nogil`` and ``prange`` to loop over an array of function arguments to solve for an array of roots more quickly than with pure Python. ``'interior-point'`` is now the default method for ``linprog``, and ``'interior-point'`` now uses SuiteSparse for sparse problems when the required scikits (scikit-umfpack and scikit-sparse) are available. On benchmark problems (gh-10026), execution time reductions by factors of 2-3 were typical. Also, a new ``method='revised simplex'`` has been added. It is not as fast or robust as ``method='interior-point'``, but it is a faster, more robust, and equally accurate substitute for the legacy ``method='simplex'``. ``differential_evolution`` can now use a ``Bounds`` class to specify the bounds for the optimizing argument of a function. `scipy.optimize.dual_annealing` performance improvements related to vectorisation of some internal code. `scipy.signal` improvements --------------------------- Two additional methods of discretization are now supported by `scipy.signal.cont2discrete`: ``impulse`` and ``foh``. `scipy.signal.firls` now uses faster solvers `scipy.signal.detrend` now has a lower physical memory footprint in some cases, which may be leveraged using the new ``overwrite_data`` keyword argument `scipy.signal.firwin` ``pass_zero`` argument now accepts new string arguments that allow specification of the desired filter type: ``'bandpass'``, ``'lowpass'``, ``'highpass'``, and ``'bandstop'`` `scipy.signal.sosfilt` may have improved performance due to lower retention of the global interpreter lock (GIL) in algorithm `scipy.sparse` improvements --------------------------- A new keyword was added to ``csgraph.dijsktra`` that allows users to query the shortest path to ANY of the passed in indices, as opposed to the shortest path to EVERY passed index. `scipy.sparse.linalg.lsmr` performance has been improved by roughly 10 percent on large problems Improved performance and reduced physical memory footprint of the algorithm used by `scipy.sparse.linalg.lobpcg` ``CSR`` and ``CSC`` sparse matrix fancy indexing performance has been improved substantially `scipy.spatial` improvements ---------------------------- `scipy.spatial.ConvexHull` now has a ``good`` attribute that can be used alongsize the ``QGn`` Qhull options to determine which external facets of a convex hull are visible from an external query point. `scipy.spatial.cKDTree.query_ball_point` has been modernized to use some newer Cython features, including GIL handling and exception translation. An issue with ``return_sorted=True`` and scalar queries was fixed, and a new mode named ``return_length`` was added. ``return_length`` only computes the length of the returned indices list instead of allocating the array every time. `scipy.spatial.transform.RotationSpline` has been added to enable interpolation of rotations with continuous angular rates and acceleration `scipy.stats` improvements -------------------------- Added a new function to compute the Epps-Singleton test statistic, `scipy.stats.epps_singleton_2samp`, which can be applied to continuous and discrete distributions. New functions `scipy.stats.median_absolute_deviation` and `scipy.stats.gstd` (geometric standard deviation) were added. The `scipy.stats.combine_pvalues` method now supports ``pearson``, ``tippett`` and ``mudholkar_george`` pvalue combination methods. The `scipy.stats.ortho_group` and `scipy.stats.special_ortho_group` ``rvs(dim)`` functions' algorithms were updated from a ``O(dim^4)`` implementation to a ``O(dim^3)`` which gives large speed improvements for ``dim>100``. A rewrite of `scipy.stats.pearsonr` to use a more robust algorithm, provide meaningful exceptions and warnings on potentially pathological input, and fix at least five separate reported issues in the original implementation. Improved the precision of ``hypergeom.logcdf`` and ``hypergeom.logsf``. Added exact computation for Kolmogorov-Smirnov (KS) two-sample test, replacing the previously approximate computation for the two-sided test `stats.ks_2samp`. Also added a one-sided, two-sample KS test, and a keyword ``alternative`` to `stats.ks_2samp`. Backwards incompatible changes ============================== `scipy.interpolate` changes --------------------------- Functions from ``scipy.interpolate`` (``spleval``, ``spline``, ``splmake``, and ``spltopp``) and functions from ``scipy.misc`` (``bytescale``, ``fromimage``, ``imfilter``, ``imread``, ``imresize``, ``imrotate``, ``imsave``, ``imshow``, ``toimage``) have been removed. The former set has been deprecated since v0.19.0 and the latter has been deprecated since v1.0.0. Similarly, aliases from ``scipy.misc`` (``comb``, ``factorial``, ``factorial2``, ``factorialk``, ``logsumexp``, ``pade``, ``info``, ``source``, ``who``) which have been deprecated since v1.0.0 are removed. `SciPy documentation for v1.1.0 <https://docs.scipy.org/doc/scipy-1.1.0/reference/misc.html>`__ can be used to track the new import locations for the relocated functions. `scipy.linalg` changes ---------------------- For ``pinv``, ``pinv2``, and ``pinvh``, the default cutoff values are changed for consistency (see the docs for the actual values). `scipy.stats` changes --------------------- Previously, ``ks_2samp(data1, data2)`` would run a two-sided test and return the approximated p-value. The new signature, ``ks_2samp(data1, data2, alternative="two-sided", method="auto")``, still runs the two-sided test by default but returns the exact p-value for small samples and the approximated value for large samples. ``method="asymp"`` would be equivalent to the old version but ``auto`` is the better choice. Other changes ============= Our tutorial has been expanded with a new section on global optimizers There has been a rework of the ``stats.distributions`` tutorials. `scipy.optimize` now correctly sets the convergence flag of the result to ``CONVERR``, a convergence error, for bounded scalar-function root-finders if the maximum iterations has been exceeded, ``disp`` is false, and ``full_output`` is true. `scipy.optimize.curve_fit` no longer fails if ``xdata`` and ``ydata`` dtypes differ; they are both now automatically cast to ``float64``. `scipy.ndimage` functions including ``binary_erosion``, ``binary_closing``, and ``binary_dilation`` now require an integer value for the number of iterations, which alleviates a number of reported issues. Fixed normal approximation in case ``zero_method == "pratt"`` in `scipy.stats.wilcoxon`. Fixes for incorrect probabilities, broadcasting issues and thread-safety related to stats distributions setting member variables inside ``_argcheck()``. `scipy.optimize.newton` now correctly raises a ``RuntimeError``, when default arguments are used, in the case that a derivative of value zero is obtained, which is a special case of failing to converge. A draft toolchain roadmap is now available, laying out a compatibility plan including Python versions, C standards, and NumPy versions. Authors ======= * ananyashreyjain + * ApamNapat + * Scott Calabrese Barton + * Christoph Baumgarten * Peter Bell + * Jacob Blomgren + * Doctor Bob + * Mana Borwornpadungkitti + * Matthew Brett * Evgeni Burovski * CJ Carey * Vega Theil Carstensen + * Robert Cimrman * Forrest Collman + * Pietro Cottone + * David + * Idan David + * Christoph Deil * Dieter Werthmüller * Conner DiPaolo + * Dowon * Michael Dunphy + * Peter Andreas Entschev + * Gökçen Eraslan + * Johann Faouzi + * Yu Feng * Piotr Figiel + * Matthew H Flamm * Franz Forstmayr + * Christoph Gohlke * Richard Janis Goldschmidt + * Ralf Gommers * Lars Grueter * Sylvain Gubian * Matt Haberland * Yaroslav Halchenko * Charles Harris * Lindsey Hiltner * JakobStruye + * He Jia + * Jwink3101 + * Greg Kiar + * Julius Bier Kirkegaard * John Kirkham + * Thomas Kluyver * Vladimir Korolev + * Joseph Kuo + * Michael Lamparski + * Eric Larson * Denis Laxalde * Katrin Leinweber * Jesse Livezey * ludcila + * Dhruv Madeka + * Magnus + * Nikolay Mayorov * Mark Mikofski * Jarrod Millman * Markus Mohrhard + * Eric Moore * Andrew Nelson * Aki Nishimura + * OGordon100 + * Petar Mlinarić + * Stefan Peterson * Matti Picus + * Ilhan Polat * Aaron Pries + * Matteo Ravasi + * Tyler Reddy * Ashton Reimer + * Joscha Reimer * rfezzani + * Riadh + * Lucas Roberts * Heshy Roskes + * Mirko Scholz + * Taylor D. Scott + * Srikrishna Sekhar + * Kevin Sheppard + * Sourav Singh * skjerns + * Kai Striega * SyedSaifAliAlvi + * Gopi Manohar T + * Albert Thomas + * Timon + * Paul van Mulbregt * Jacob Vanderplas * Daniel Vargas + * Pauli Virtanen * VNMabus + * Stefan van der Walt * Warren Weckesser * Josh Wilson * Nate Yoder + * Roman Yurchak A total of 97 people contributed to this release. People with a "+" by their names contributed a patch for the first time. This list of names is automatically generated, and may not be fully complete. Issues closed for 1.3.0 ----------------------- * `#1320 <https://github.com/scipy/scipy/issues/1320>`__: scipy.stats.distribution: problem with self.a, self.b if they... * `#2002 <https://github.com/scipy/scipy/issues/2002>`__: members set in scipy.stats.distributions.##._argcheck (Trac #1477) * `#2823 <https://github.com/scipy/scipy/issues/2823>`__: distribution methods add tmp * `#3220 <https://github.com/scipy/scipy/issues/3220>`__: Scipy.opimize.fmin_powell direc argument syntax unclear * `#3728 <https://github.com/scipy/scipy/issues/3728>`__: scipy.stats.pearsonr: possible bug with zero variance input * `#6805 <https://github.com/scipy/scipy/issues/6805>`__: error-in-scipy-wilcoxon-signed-rank-test-for-equal-series * `#6873 <https://github.com/scipy/scipy/issues/6873>`__: 'stats.boxcox' return all same values * `#7117 <https://github.com/scipy/scipy/issues/7117>`__: Warn users when using float32 input data to curve_fit and friends * `#7632 <https://github.com/scipy/scipy/issues/7632>`__: it's not possible to tell the \`optimize.least_squares\` solver... * `#7730 <https://github.com/scipy/scipy/issues/7730>`__: stats.pearsonr: Potential division by zero for dataset of length... * `#7933 <https://github.com/scipy/scipy/issues/7933>`__: stats.truncnorm fails when providing values outside truncation... * `#8033 <https://github.com/scipy/scipy/issues/8033>`__: Add standard filter types to firwin to set pass_zero intuitively... * `#8600 <https://github.com/scipy/scipy/issues/8600>`__: lfilter.c.src zfill has erroneous header * `#8692 <https://github.com/scipy/scipy/issues/8692>`__: Non-negative values of \`stats.hypergeom.logcdf\` * `#8734 <https://github.com/scipy/scipy/issues/8734>`__: Enable pip build isolation * `#8861 <https://github.com/scipy/scipy/issues/8861>`__: scipy.linalg.pinv gives wrong result while scipy.linalg.pinv2... * `#8915 <https://github.com/scipy/scipy/issues/8915>`__: need to fix macOS build against older numpy versions * `#8980 <https://github.com/scipy/scipy/issues/8980>`__: scipy.stats.pearsonr overflows with high values of x and y * `#9226 <https://github.com/scipy/scipy/issues/9226>`__: BUG: signal: SystemError: <built-in function _linear_filter>... * `#9254 <https://github.com/scipy/scipy/issues/9254>`__: BUG: root finders brentq, etc, flag says "converged" even if... * `#9308 <https://github.com/scipy/scipy/issues/9308>`__: Test failure - test_initial_constraints_as_canonical * `#9353 <https://github.com/scipy/scipy/issues/9353>`__: scipy.stats.pearsonr returns r=1 if r_num/r_den = inf * `#9359 <https://github.com/scipy/scipy/issues/9359>`__: Planck distribution is a geometric distribution * `#9381 <https://github.com/scipy/scipy/issues/9381>`__: linregress should warn user in 2x2 array case * `#9406 <https://github.com/scipy/scipy/issues/9406>`__: BUG: stats: In pearsonr, when r is nan, the p-value must also... * `#9437 <https://github.com/scipy/scipy/issues/9437>`__: Cannot create sparse matrix from size_t indexes * `#9518 <https://github.com/scipy/scipy/issues/9518>`__: Relational attributes in loadarff * `#9551 <https://github.com/scipy/scipy/issues/9551>`__: BUG: scipy.optimize.newton says the root of x^2+1 is zero. * `#9564 <https://github.com/scipy/scipy/issues/9564>`__: rv_sample accepts invalid input in scipy.stats * `#9565 <https://github.com/scipy/scipy/issues/9565>`__: improper handling of multidimensional input in stats.rv_sample * `#9581 <https://github.com/scipy/scipy/issues/9581>`__: Least-squares minimization fails silently when x and y data are... * `#9587 <https://github.com/scipy/scipy/issues/9587>`__: Outdated value for scipy.constants.au * `#9611 <https://github.com/scipy/scipy/issues/9611>`__: Overflow error with new way of p-value calculation in kendall... * `#9645 <https://github.com/scipy/scipy/issues/9645>`__: \`scipy.stats.mode\` crashes with variable length arrays (\`dtype=object\`) * `#9734 <https://github.com/scipy/scipy/issues/9734>`__: PendingDeprecationWarning for np.matrix with pytest * `#9786 <https://github.com/scipy/scipy/issues/9786>`__: stats.ks_2samp() misleading for small data sets. * `#9790 <https://github.com/scipy/scipy/issues/9790>`__: Excessive memory usage on detrend * `#9801 <https://github.com/scipy/scipy/issues/9801>`__: dual_annealing does not set the success attribute in OptimizeResult * `#9833 <https://github.com/scipy/scipy/issues/9833>`__: IntegrationWarning from mielke.stats() during build of html doc. * `#9835 <https://github.com/scipy/scipy/issues/9835>`__: scipy.signal.firls seems to be inefficient versus MATLAB firls * `#9864 <https://github.com/scipy/scipy/issues/9864>`__: Curve_fit does not check for empty input data if called with... * `#9869 <https://github.com/scipy/scipy/issues/9869>`__: scipy.ndimage.label: Minor documentation issue * `#9882 <https://github.com/scipy/scipy/issues/9882>`__: format at the wrong paranthesis in scipy.spatial.transform * `#9889 <https://github.com/scipy/scipy/issues/9889>`__: scipy.signal.find_peaks minor documentation issue * `#9890 <https://github.com/scipy/scipy/issues/9890>`__: Minkowski p-norm Issues in cKDTree For Values Other Than 2 Or... * `#9896 <https://github.com/scipy/scipy/issues/9896>`__: scipy.stats._argcheck sets (not just checks) values * `#9905 <https://github.com/scipy/scipy/issues/9905>`__: Memory error in ndimage.binary_erosion * `#9909 <https://github.com/scipy/scipy/issues/9909>`__: binary_dilation/erosion/closing crashes when iterations is float * `#9919 <https://github.com/scipy/scipy/issues/9919>`__: BUG: \`coo_matrix\` does not validate the \`shape\` argument. * `#9982 <https://github.com/scipy/scipy/issues/9982>`__: lsq_linear hangs/infinite loop with 'trf' method * `#10003 <https://github.com/scipy/scipy/issues/10003>`__: exponnorm.pdf returns NAN for small K * `#10011 <https://github.com/scipy/scipy/issues/10011>`__: Incorrect check for invalid rotation plane in scipy.ndimage.rotate * `#10024 <https://github.com/scipy/scipy/issues/10024>`__: Fails to build from git * `#10048 <https://github.com/scipy/scipy/issues/10048>`__: DOC: scipy.optimize.root_scalar * `#10068 <https://github.com/scipy/scipy/issues/10068>`__: DOC: scipy.interpolate.splev * `#10074 <https://github.com/scipy/scipy/issues/10074>`__: BUG: \`expm\` calculates the wrong coefficients in the backward... Pull requests for 1.3.0 ----------------------- * `#7827 <https://github.com/scipy/scipy/pull/7827>`__: ENH: sparse: overhaul of sparse matrix indexing * `#8431 <https://github.com/scipy/scipy/pull/8431>`__: ENH: Cython optimize zeros api * `#8743 <https://github.com/scipy/scipy/pull/8743>`__: DOC: Updated linalg.pinv, .pinv2, .pinvh docstrings * `#8744 <https://github.com/scipy/scipy/pull/8744>`__: DOC: added examples to remez docstring * `#9227 <https://github.com/scipy/scipy/pull/9227>`__: DOC: update description of "direc" parameter of "fmin_powell" * `#9263 <https://github.com/scipy/scipy/pull/9263>`__: ENH: optimize: added "revised simplex" for scipy.optimize.linprog * `#9325 <https://github.com/scipy/scipy/pull/9325>`__: DEP: Remove deprecated functions for 1.3.0 * `#9330 <https://github.com/scipy/scipy/pull/9330>`__: Add note on push and pull affine transformations * `#9423 <https://github.com/scipy/scipy/pull/9423>`__: DOC: Clearly state how 2x2 input arrays are handled in stats.linregress * `#9428 <https://github.com/scipy/scipy/pull/9428>`__: ENH: parallelised brute * `#9438 <https://github.com/scipy/scipy/pull/9438>`__: BUG: Initialize coo matrix with size_t indexes * `#9455 <https://github.com/scipy/scipy/pull/9455>`__: MAINT: Speed up get_(lapack,blas)_func * `#9465 <https://github.com/scipy/scipy/pull/9465>`__: MAINT: Clean up optimize.zeros C solvers interfaces/code. * `#9477 <https://github.com/scipy/scipy/pull/9477>`__: DOC: linalg: fix lstsq docstring on residues shape * `#9478 <https://github.com/scipy/scipy/pull/9478>`__: DOC: Add docstring examples for rosen functions * `#9479 <https://github.com/scipy/scipy/pull/9479>`__: DOC: Add docstring example for ai_zeros and bi_zeros * `#9480 <https://github.com/scipy/scipy/pull/9480>`__: MAINT: linalg: lstsq clean up * `#9489 <https://github.com/scipy/scipy/pull/9489>`__: DOC: roadmap update for changes over the last year. * `#9492 <https://github.com/scipy/scipy/pull/9492>`__: MAINT: stats: Improve implementation of chi2 ppf method. * `#9497 <https://github.com/scipy/scipy/pull/9497>`__: DOC: Improve docstrings sparse.linalg.isolve * `#9499 <https://github.com/scipy/scipy/pull/9499>`__: DOC: Replace "Scipy" with "SciPy" in the .rst doc files for consistency. * `#9500 <https://github.com/scipy/scipy/pull/9500>`__: DOC: Document the toolchain and its roadmap. * `#9505 <https://github.com/scipy/scipy/pull/9505>`__: DOC: specify which definition of skewness is used * `#9511 <https://github.com/scipy/scipy/pull/9511>`__: DEP: interpolate: remove deprecated interpolate_wrapper * `#9517 <https://github.com/scipy/scipy/pull/9517>`__: BUG: improve error handling in stats.iqr * `#9522 <https://github.com/scipy/scipy/pull/9522>`__: ENH: Add Fiedler and fiedler companion to special matrices * `#9526 <https://github.com/scipy/scipy/pull/9526>`__: TST: relax precision requirements in signal.correlate tests * `#9529 <https://github.com/scipy/scipy/pull/9529>`__: DOC: fix missing random seed in optimize.newton example * `#9533 <https://github.com/scipy/scipy/pull/9533>`__: MAINT: Use list comprehension when possible * `#9537 <https://github.com/scipy/scipy/pull/9537>`__: DOC: add a "big picture" roadmap * `#9538 <https://github.com/scipy/scipy/pull/9538>`__: DOC: Replace "Numpy" with "NumPy" in .py, .rst and .txt doc files... * `#9539 <https://github.com/scipy/scipy/pull/9539>`__: ENH: add two-sample test (Epps-Singleton) to scipy.stats * `#9559 <https://github.com/scipy/scipy/pull/9559>`__: DOC: add section on global optimizers to tutorial * `#9561 <https://github.com/scipy/scipy/pull/9561>`__: ENH: remove noprefix.h, change code appropriately * `#9562 <https://github.com/scipy/scipy/pull/9562>`__: MAINT: stats: Rewrite pearsonr. * `#9563 <https://github.com/scipy/scipy/pull/9563>`__: BUG: Minor bug fix Callback in linprog(method='simplex') * `#9568 <https://github.com/scipy/scipy/pull/9568>`__: MAINT: raise runtime error for newton with zeroder if disp true,... * `#9570 <https://github.com/scipy/scipy/pull/9570>`__: Correct docstring in show_options in optimize. Fixes #9407 * `#9573 <https://github.com/scipy/scipy/pull/9573>`__: BUG fixes range of pk variable pre-check * `#9577 <https://github.com/scipy/scipy/pull/9577>`__: TST: fix minor issue in a signal.stft test. * `#9580 <https://github.com/scipy/scipy/pull/9580>`__: Included blank line before list - Fixes #8658 * `#9582 <https://github.com/scipy/scipy/pull/9582>`__: MAINT: drop Python 2.7 and 3.4 * `#9588 <https://github.com/scipy/scipy/pull/9588>`__: MAINT: update \`constants.astronomical_unit\` to new 2012 value. * `#9592 <https://github.com/scipy/scipy/pull/9592>`__: TST: Add 32-bit testing to CI * `#9593 <https://github.com/scipy/scipy/pull/9593>`__: DOC: Replace cumulative density with cumulative distribution * `#9596 <https://github.com/scipy/scipy/pull/9596>`__: TST: remove VC 9.0 from Azure CI * `#9599 <https://github.com/scipy/scipy/pull/9599>`__: Hyperlink DOI to preferred resolver * `#9601 <https://github.com/scipy/scipy/pull/9601>`__: DEV: try to limit GC memory use on PyPy * `#9603 <https://github.com/scipy/scipy/pull/9603>`__: MAINT: improve logcdf and logsf of hypergeometric distribution * `#9605 <https://github.com/scipy/scipy/pull/9605>`__: Reference to pylops in LinearOperator notes and ARPACK example * `#9617 <https://github.com/scipy/scipy/pull/9617>`__: TST: reduce max memory usage for sparse.linalg.lgmres test * `#9619 <https://github.com/scipy/scipy/pull/9619>`__: FIX: Sparse matrix addition/subtraction eliminates explicit zeros * `#9621 <https://github.com/scipy/scipy/pull/9621>`__: bugfix in rv_sample in scipy.stats * `#9622 <https://github.com/scipy/scipy/pull/9622>`__: MAINT: Raise error in directed_hausdorff distance * `#9623 <https://github.com/scipy/scipy/pull/9623>`__: DOC: Build docs with warnings as errors * `#9625 <https://github.com/scipy/scipy/pull/9625>`__: Return the number of calls to 'hessp' (not just 'hess') in trust... * `#9627 <https://github.com/scipy/scipy/pull/9627>`__: BUG: ignore empty lines in mmio * `#9637 <https://github.com/scipy/scipy/pull/9637>`__: Function to calculate the MAD of an array * `#9646 <https://github.com/scipy/scipy/pull/9646>`__: BUG: stats: mode for objects w/ndim > 1 * `#9648 <https://github.com/scipy/scipy/pull/9648>`__: Add \`stats.contingency\` to refguide-check * `#9650 <https://github.com/scipy/scipy/pull/9650>`__: ENH: many lobpcg() algorithm improvements * `#9652 <https://github.com/scipy/scipy/pull/9652>`__: Move misc.doccer to _lib.doccer * `#9660 <https://github.com/scipy/scipy/pull/9660>`__: ENH: add pearson, tippett, and mudholkar-george to combine_pvalues * `#9661 <https://github.com/scipy/scipy/pull/9661>`__: BUG: Fix ksone right-hand endpoint, documentation and tests. * `#9664 <https://github.com/scipy/scipy/pull/9664>`__: ENH: adding multi-target dijsktra performance enhancement * `#9670 <https://github.com/scipy/scipy/pull/9670>`__: MAINT: link planck and geometric distribution in scipy.stats * `#9676 <https://github.com/scipy/scipy/pull/9676>`__: ENH: optimize: change default linprog method to interior-point * `#9685 <https://github.com/scipy/scipy/pull/9685>`__: Added reference to ndimage.filters.median_filter * `#9705 <https://github.com/scipy/scipy/pull/9705>`__: Fix coefficients in expm helper function * `#9711 <https://github.com/scipy/scipy/pull/9711>`__: Release the GIL during sosfilt processing for simple types * `#9721 <https://github.com/scipy/scipy/pull/9721>`__: ENH: Convexhull visiblefacets * `#9723 <https://github.com/scipy/scipy/pull/9723>`__: BLD: Modify rv_generic._construct_doc to print out failing distribution... * `#9726 <https://github.com/scipy/scipy/pull/9726>`__: BUG: Fix small issues with \`signal.lfilter' * `#9729 <https://github.com/scipy/scipy/pull/9729>`__: BUG: Typecheck iterations for binary image operations * `#9730 <https://github.com/scipy/scipy/pull/9730>`__: ENH: reduce sizeof(NI_WatershedElement) by 20% * `#9731 <https://github.com/scipy/scipy/pull/9731>`__: ENH: remove suspicious sequence of type castings * `#9739 <https://github.com/scipy/scipy/pull/9739>`__: BUG: qr_updates fails if u is exactly in span Q * `#9749 <https://github.com/scipy/scipy/pull/9749>`__: BUG: MapWrapper.__exit__ should terminate * `#9753 <https://github.com/scipy/scipy/pull/9753>`__: ENH: Added exact computation for Kolmogorov-Smirnov two-sample... * `#9755 <https://github.com/scipy/scipy/pull/9755>`__: DOC: Added example for signal.impulse, copied from impulse2 * `#9756 <https://github.com/scipy/scipy/pull/9756>`__: DOC: Added docstring example for iirdesign * `#9757 <https://github.com/scipy/scipy/pull/9757>`__: DOC: Added examples for step functions * `#9759 <https://github.com/scipy/scipy/pull/9759>`__: ENH: Allow pass_zero to act like btype * `#9760 <https://github.com/scipy/scipy/pull/9760>`__: DOC: Added docstring for lp2bs * `#9761 <https://github.com/scipy/scipy/pull/9761>`__: DOC: Added docstring and example for lp2bp * `#9764 <https://github.com/scipy/scipy/pull/9764>`__: BUG: Catch internal warnings for matrix * `#9766 <https://github.com/scipy/scipy/pull/9766>`__: ENH: Speed up _gaussian_kernel1d by removing dependence on np.polynomial * `#9769 <https://github.com/scipy/scipy/pull/9769>`__: BUG: Fix Cubic Spline Read Only issues * `#9773 <https://github.com/scipy/scipy/pull/9773>`__: DOC: Several docstrings * `#9774 <https://github.com/scipy/scipy/pull/9774>`__: TST: bump Azure CI OpenBLAS version to match wheels * `#9775 <https://github.com/scipy/scipy/pull/9775>`__: DOC: Improve clarity of cov_x documentation for scipy.optimize.leastsq * `#9779 <https://github.com/scipy/scipy/pull/9779>`__: ENH: dual_annealing vectorise visit_fn * `#9788 <https://github.com/scipy/scipy/pull/9788>`__: TST, BUG: f2py-related issues with NumPy < 1.14.0 * `#9791 <https://github.com/scipy/scipy/pull/9791>`__: BUG: fix amax constraint not enforced in scalar_search_wolfe2 * `#9792 <https://github.com/scipy/scipy/pull/9792>`__: ENH: Allow inplace copying in place in "detrend" function * `#9795 <https://github.com/scipy/scipy/pull/9795>`__: DOC: Fix/update docstring for dstn and dst * `#9796 <https://github.com/scipy/scipy/pull/9796>`__: MAINT: Allow None tolerances in least_squares * `#9798 <https://github.com/scipy/scipy/pull/9798>`__: BUG: fixes abort trap 6 error in scipy issue 9785 in unit tests * `#9807 <https://github.com/scipy/scipy/pull/9807>`__: MAINT: improve doc and add alternative keyword to wilcoxon in... * `#9808 <https://github.com/scipy/scipy/pull/9808>`__: Fix PPoly integrate and test for CubicSpline * `#9810 <https://github.com/scipy/scipy/pull/9810>`__: ENH: Add the geometric standard deviation function * `#9811 <https://github.com/scipy/scipy/pull/9811>`__: MAINT: remove invalid derphi default None value in scalar_search_wolfe2 * `#9813 <https://github.com/scipy/scipy/pull/9813>`__: Adapt hamming distance in C to support weights * `#9817 <https://github.com/scipy/scipy/pull/9817>`__: DOC: Copy solver description to solver modules * `#9829 <https://github.com/scipy/scipy/pull/9829>`__: ENH: Add FOH and equivalent impulse response discretizations... * `#9831 <https://github.com/scipy/scipy/pull/9831>`__: ENH: Implement RotationSpline * `#9834 <https://github.com/scipy/scipy/pull/9834>`__: DOC: Change mielke distribution default parameters to ensure... * `#9838 <https://github.com/scipy/scipy/pull/9838>`__: ENH: Use faster solvers for firls * `#9854 <https://github.com/scipy/scipy/pull/9854>`__: ENH: loadarff now supports relational attributes. * `#9856 <https://github.com/scipy/scipy/pull/9856>`__: integrate.bvp - improve handling of nonlinear boundary conditions * `#9862 <https://github.com/scipy/scipy/pull/9862>`__: TST: reduce Appveyor CI load * `#9874 <https://github.com/scipy/scipy/pull/9874>`__: DOC: Update requirements in release notes * `#9883 <https://github.com/scipy/scipy/pull/9883>`__: BUG: fixed parenthesis in spatial.rotation * `#9884 <https://github.com/scipy/scipy/pull/9884>`__: ENH: Use Sparsity in Clarkson-Woodruff Sketch * `#9888 <https://github.com/scipy/scipy/pull/9888>`__: MAINT: Replace NumPy aliased functions * `#9892 <https://github.com/scipy/scipy/pull/9892>`__: BUG: Fix 9890 query_ball_point returns wrong result when p is... * `#9893 <https://github.com/scipy/scipy/pull/9893>`__: BUG: curve_fit doesn't check for empty input if called with bounds * `#9894 <https://github.com/scipy/scipy/pull/9894>`__: scipy.signal.find_peaks documentation error * `#9898 <https://github.com/scipy/scipy/pull/9898>`__: BUG: Set success attribute in OptimizeResult. See #9801 * `#9900 <https://github.com/scipy/scipy/pull/9900>`__: BUG: Restrict rv_generic._argcheck() and its overrides from setting... * `#9906 <https://github.com/scipy/scipy/pull/9906>`__: fixed a bug in kde logpdf * `#9911 <https://github.com/scipy/scipy/pull/9911>`__: DOC: replace example for "np.select" with the one from numpy... * `#9912 <https://github.com/scipy/scipy/pull/9912>`__: BF(DOC): point to numpy.select instead of plain (python) .select * `#9914 <https://github.com/scipy/scipy/pull/9914>`__: DOC: change ValueError message in _validate_pad of signaltools. * `#9915 <https://github.com/scipy/scipy/pull/9915>`__: cKDTree query_ball_point improvements * `#9918 <https://github.com/scipy/scipy/pull/9918>`__: Update ckdtree.pyx with boxsize argument in docstring * `#9920 <https://github.com/scipy/scipy/pull/9920>`__: BUG: sparse: Validate explicit shape if given with dense argument... * `#9924 <https://github.com/scipy/scipy/pull/9924>`__: BLD: add back pyproject.toml * `#9931 <https://github.com/scipy/scipy/pull/9931>`__: Fix empty constraint * `#9935 <https://github.com/scipy/scipy/pull/9935>`__: DOC: fix references for stats.f_oneway * `#9936 <https://github.com/scipy/scipy/pull/9936>`__: Revert gh-9619: "FIX: Sparse matrix addition/subtraction eliminates... * `#9937 <https://github.com/scipy/scipy/pull/9937>`__: MAINT: fix PEP8 issues and update to pycodestyle 2.5.0 * `#9939 <https://github.com/scipy/scipy/pull/9939>`__: DOC: correct \`structure\` description in \`ndimage.label\` docstring * `#9940 <https://github.com/scipy/scipy/pull/9940>`__: MAINT: remove extraneous distutils copies * `#9945 <https://github.com/scipy/scipy/pull/9945>`__: ENH: differential_evolution can use Bounds object * `#9949 <https://github.com/scipy/scipy/pull/9949>`__: Added 'std' to add doctstrings since it is a \`known_stats\`... * `#9953 <https://github.com/scipy/scipy/pull/9953>`__: DOC: Documentation cleanup for stats tutorials. * `#9962 <https://github.com/scipy/scipy/pull/9962>`__: __repr__ for Bounds * `#9971 <https://github.com/scipy/scipy/pull/9971>`__: ENH: Improve performance of lsmr * `#9987 <https://github.com/scipy/scipy/pull/9987>`__: CI: pin Sphinx version to 1.8.5 * `#9990 <https://github.com/scipy/scipy/pull/9990>`__: ENH: constraint violation * `#9991 <https://github.com/scipy/scipy/pull/9991>`__: BUG: Avoid inplace modification of input array in newton * `#9995 <https://github.com/scipy/scipy/pull/9995>`__: MAINT: sparse.csgraph: Add cdef to stop build warning. * `#9996 <https://github.com/scipy/scipy/pull/9996>`__: BUG: Make minimize_quadratic_1d work with infinite bounds correctly * `#10004 <https://github.com/scipy/scipy/pull/10004>`__: BUG: Fix unbound local error in linprog - simplex. * `#10007 <https://github.com/scipy/scipy/pull/10007>`__: BLD: fix Python 3.7 build with build isolation * `#10009 <https://github.com/scipy/scipy/pull/10009>`__: BUG: Make sure that _binary_erosion only accepts an integer number... * `#10016 <https://github.com/scipy/scipy/pull/10016>`__: Update link to airspeed-velocity * `#10017 <https://github.com/scipy/scipy/pull/10017>`__: DOC: Update \`interpolate.LSQSphereBivariateSpline\` to include... * `#10018 <https://github.com/scipy/scipy/pull/10018>`__: MAINT: special: Fix a few warnings that occur when compiling... * `#10019 <https://github.com/scipy/scipy/pull/10019>`__: TST: Azure summarizes test failures * `#10021 <https://github.com/scipy/scipy/pull/10021>`__: ENH: Introduce CubicHermiteSpline * `#10022 <https://github.com/scipy/scipy/pull/10022>`__: BENCH: Increase cython version in asv to fix benchmark builds * `#10023 <https://github.com/scipy/scipy/pull/10023>`__: BUG: Avoid exponnorm producing nan for small K values. * `#10025 <https://github.com/scipy/scipy/pull/10025>`__: BUG: optimize: tweaked linprog status 4 error message * `#10026 <https://github.com/scipy/scipy/pull/10026>`__: ENH: optimize: use SuiteSparse in linprog interior-point when... * `#10027 <https://github.com/scipy/scipy/pull/10027>`__: MAINT: cluster: clean up the use of malloc() in the function... * `#10028 <https://github.com/scipy/scipy/pull/10028>`__: Fix rotate invalid plane check * `#10040 <https://github.com/scipy/scipy/pull/10040>`__: MAINT: fix pratt method of wilcox test in scipy.stats * `#10041 <https://github.com/scipy/scipy/pull/10041>`__: MAINT: special: Fix a warning generated when building the AMOS... * `#10044 <https://github.com/scipy/scipy/pull/10044>`__: DOC: fix up spatial.transform.Rotation docstrings * `#10047 <https://github.com/scipy/scipy/pull/10047>`__: MAINT: interpolate: Fix a few build warnings. * `#10051 <https://github.com/scipy/scipy/pull/10051>`__: Add project_urls to setup * `#10052 <https://github.com/scipy/scipy/pull/10052>`__: don't set flag to "converged" if max iter exceeded * `#10054 <https://github.com/scipy/scipy/pull/10054>`__: MAINT: signal: Fix a few build warnings and modernize some C... * `#10056 <https://github.com/scipy/scipy/pull/10056>`__: BUG: Ensure factorial is not too large in kendaltau * `#10058 <https://github.com/scipy/scipy/pull/10058>`__: Small speedup in samping from ortho and special_ortho groups * `#10059 <https://github.com/scipy/scipy/pull/10059>`__: BUG: optimize: fix #10038 by increasing tol * `#10061 <https://github.com/scipy/scipy/pull/10061>`__: BLD: DOC: make building docs easier by parsing python version. * `#10064 <https://github.com/scipy/scipy/pull/10064>`__: ENH: Significant speedup for ortho and special ortho group * `#10065 <https://github.com/scipy/scipy/pull/10065>`__: DOC: Reword parameter descriptions in \`optimize.root_scalar\` * `#10066 <https://github.com/scipy/scipy/pull/10066>`__: BUG: signal: Fix error raised by savgol_coeffs when deriv > polyorder. * `#10067 <https://github.com/scipy/scipy/pull/10067>`__: MAINT: Fix the cutoff value inconsistency for pinv2 and pinvh * `#10072 <https://github.com/scipy/scipy/pull/10072>`__: BUG: stats: Fix boxcox_llf to avoid loss of precision. * `#10075 <https://github.com/scipy/scipy/pull/10075>`__: ENH: Add wrappers for ?syconv routines * `#10076 <https://github.com/scipy/scipy/pull/10076>`__: BUG: optimize: fix curve_fit for mixed float32/float64 input * `#10077 <https://github.com/scipy/scipy/pull/10077>`__: DOC: Replace undefined \`k\` in \`interpolate.splev\` docstring * `#10079 <https://github.com/scipy/scipy/pull/10079>`__: DOC: Fixed typo, rearranged some doc of stats.morestats.wilcoxon. * `#10080 <https://github.com/scipy/scipy/pull/10080>`__: TST: install scikit-sparse for full TravisCI tests * `#10083 <https://github.com/scipy/scipy/pull/10083>`__: Clean \`\`_clean_inputs\`\` in optimize.linprog * `#10088 <https://github.com/scipy/scipy/pull/10088>`__: ENH: optimize: linprog test CHOLMOD/UMFPACK solvers when available * `#10090 <https://github.com/scipy/scipy/pull/10090>`__: MAINT: Fix CubicSplinerInterpolator for pandas * `#10091 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ANN: NumPy and SciPy accepted in Summer of Docs, technical writer exploration phase open
by Ralf Gommers April 30, 2019

April 30, 2019

Hi all, Good news: NumPy and SciPy both were accepted as participating organizations for Google Summer of Docs! This could potentially be very interesting and impactful. If you have any tech writer friends that could be interested or that may have friends, colleagues or a community that may be: please point them to the announcement! Links for program details below. Our ideas pages are at: https://github.com/numfocus/gsod/blob/master/2019/NumPy_ideas_list.md https://github.com/numfocus/gsod/blob/master/2019/SciPy_ideas_list.md Cheers, Ralf ---------- Forwarded message --------- From: 'Andrew Chen' via Season of Docs - Announce < season-of-docs-announce(a)googlegroups.com> Date: Tue, Apr 30, 2019 at 2:30 PM Subject: [Season of Docs - Announcements] Participating organizations announced and technical writer exploration phase open To: Season of Docs - Announce <season-of-docs-announce(a)googlegroups.com> Thank you for your enthusiasm and support for Season of Docs. We received nearly 200 organization applications! There were many high quality applications, so the selection of organizations was not easy. The list of 50 participating open source organizations for Season of Docs 2019 is now available at https://developers.google.com/season-of-docs/docs/participants/. Are you a technical writer interested in taking part in Season of Docs? Please explore the list of participating organizations and their project ideas. If any of the projects interest you, you can contact the open source organization now to start fleshing out your project proposal. You can explore more than one project, and when the technical writer application phase opens you can submit more than one project proposal, but only one proposal will be accepted. The exploration phase runs from April 30 to May 28. Take a look at the technical writer guidelines <https://developers.google.com/season-of-docs/docs/tech-writer-guide#tech-wr…> for this phase. You can submit your project proposals to Season of Docs when the technical writer application phase opens on May 29. See the full timeline <https://developers.google.com/season-of-docs/docs/timeline> on the Season of Docs website. We hope you enjoy exploring the available open source projects and choosing the project you’d like to work with! If you have any questions about the program, please email the Season of Docs team at season-of-docs-support(a)googlegroups.com. -- You received this message because you are subscribed to the Google Groups "Season of Docs - Announce" group. To unsubscribe from this group and stop receiving emails from it, send an email to season-of-docs-announce+unsubscribe(a)googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/season-of-docs-announce/aac7c948-d19f-48d… <https://groups.google.com/d/msgid/season-of-docs-announce/aac7c948-d19f-48d…> . For more options, visit https://groups.google.com/d/optout.

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[ANN] Release of scikit-spatial package
by Andrew Hynes April 28, 2019

April 28, 2019

Hello everyone, I'm completing my master's in computer engineering, and it involved writing several functions for computations in 3D space, such as finding the line of best fit from multiple points and projecting a point onto a line. I decided to package my code into 'scikit-spatial', which provides objects for points, vectors, lines and planes, and computations between them. I know SymPy has similar objects in their geometry package, but my package is based on NumPy for the objects and computations. The Point and Vector objects are actually subclasses of the NumPy ndarray. It's my first Python package, so any feedback or contributions would be greatly appreciated. The code is at https://github.com/ajhynes7/scikit-spatial. I apologize if this is the wrong mailing list to post this. The "Scikits" page (https://www.scipy.org/scikits.html) just says "It can however be useful to let people know about it by discussing the new project e.g. on the Scipy mailing lists.", but it doesn't specify which one. Maybe the website can be edited to specify a mailing list for future reference? Thanks, Andrew Hynes

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SciPy now fiscally sponsored by NumFOCUS
by Ralf Gommers April 27, 2019

April 27, 2019

Hi everyone, I'm happy to tell you that, finally, SciPy is now fiscally sponsored by NumFOCUS. We signed a "Fiscal Sponsorship Agreement" between the SciPy Steering Council and NumFOCUS, see https://numfocus.org/information-fiscal-sponsorship (comprehensive model). What this means is basically that we can have access to services like administrative, legal, marketing support, and can through NumFOCUS accept donations, grants, etc. and use those funds to further improve SciPy. Until now we were only an "affiliated project", which didn't give us our own account or the right to use funds that were donated to NumFOCUS dedicated to SciPy (note that we did get some financial support before, e.g. the small grants for optimize.linprog and pydata/sparse). One thing we do need to do is clarify the situation around sponsors on scipy.org. Right now it says "sponsored by Enthought" fairly prominently on every page, and all other sponsors are hidden away at https://scipy.org/scipylib/donations.html#infrastructure-non-financial-supp…. NumFOCUS asked that we fix this. The situation is: 1. NumFOCUS is our fiscal sponsor 2. We have a number of former and current sponsors (both money and things like free infrastructure or services). Those all need to be acknowledged in a fair and visible way. I will work on an update to scipy.org (aiming for next week) to fix this. A more comprehensive overhaul of scipy.org would also be nice at some point, but that's for later. Cheers, Ralf

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Proposed SciPy 1.3.0 Release Schedule
by Tyler Reddy April 27, 2019

April 27, 2019

Hi All, It is almost 4 months after the (slightly-delayed) 1.2.0 release on December 17/ 2018, so probably time to plan the 1.3.0 release. It would be a good idea to look over the PRs with a 1.3.0 milestone, and tag anything else that should have this milestone appropriately. I'd like to propose the following schedule: April 25: branch 1.3.x April 28: rc1 May 11: rc2 (if needed) May 20: final release Thoughts? Tyler

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toolchain roadmap
by Ralf Gommers April 22, 2019

April 22, 2019

Hi all, This is worth a mention: Paul van Mulbregt wrote a very nice "toolchain roadmap" that was just merged. So if you want to know when you can use C99, or what LAPACK versions are supported, or any such question: http://scipy.github.io/devdocs/toolchain.html Cheers, Ralf

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NumPy 1.16. 3 release
by Charles R Harris April 21, 2019

April 21, 2019

Hi All, On behalf of the NumPy team I am pleased to announce the release of NumPy 1.16.3 which contains several fixes for newly reported bugs. The Python versions supported in this release are 2.7 and 3.5-3.7. There are several notable changes. - Unpickling object arrays when loading *.npy or *.npz files now requires an explicit opt-in. This backwards incompatible change was made in response to CVE-2019-6446 <https://nvd.nist.gov/vuln/detail/CVE-2019-6446>. - The covariance in 'random.mvnormal' is cast to double. This should make the tolerance more useful when checking the singular values of the covariance matrix. - The '__array_interface__' offset now works as documented. The offset value was being mistakenly ignored. Downstream developers building this release should use Cython >= 0.29.2 and, if using OpenBLAS, OpenBLAS > v0.3.4. Wheels for this release can be downloaded from PyPI <https://pypi.org/project/numpy/1.16.3/>, source archives and release notes are available from Github <https://github.com/numpy/numpy/releases/tag/v1.16.3>. If you are installing using pip, you may encounter a problem with older installed versions of NumPy that pip did not delete becoming mixed with the current version, resulting in an ``ImportError``. That problem is particularly common on Debian derived distributions due to a modified pip. The fix is to make sure all previous NumPy versions installed by pip have been removed. See #12736 <https://github.com/numpy/numpy/issues/12736> for discussion of the issue. *Contributors* A total of 16 people contributed to this release. People with a "+" by their names contributed a patch for the first time. - Andreas Schwab - Bharat Raghunathan + - Bran + - Charles Harris - Eric Wieser - Jakub Wilk - Kevin Sheppard - Marten van Kerkwijk - Matti Picus - Paul Ivanov - Ralf Gommers - Sebastian Berg - Tyler Reddy - Warren Weckesser - Yu Feng - adeak + *Pull requests merged* A total of 26 pull requests were merged for this release. - gh-13072 : BUG: Fixes to numpy.distutils.Configuration.get_version (#13056) - gh-13082 : BUG: Fix errors in string formatting while producing an error - gh-13083 : BUG: Convert fortran flags in environment variable - gh-13084 : BUG: Remove error-prone borrowed reference handling - gh-13085 : BUG: Add error checks when converting integers to datetime types - gh-13091 : BUG: Remove our patched version of `distutils.split_quoted` - gh-13141 : BUG: Fix testsuite failures on ppc and riscv - gh-13142 : BUG: Fix parameter validity checks in ``random.choice`` - gh-13143 : BUG: Ensure linspace works on object input. - gh-13144 : BLD: fix include list for sdist building. - gh-13145 : BUG: __array_interface__ offset was always ignored - gh-13274 : MAINT: f2py: Add a cast to avoid a compiler warning. - gh-13275 : BUG, MAINT: fix reference count error on invalid input to ndarray.flat - gh-13276 : ENH: Cast covariance to double in random mvnormal - gh-13278 : BUG: Fix null pointer dereference in PyArray_DTypeFromObjectHelper - gh-13339 : BUG: Use C call to sysctlbyname for AVX detection on MacOS. - gh-13340 : BUG: Fix crash when calling savetxt on a padded array - gh-13341 : BUG: ufunc.at iteration variable size fix - gh-13342 : DOC: Add as_ctypes_type to the documentation - gh-13350 : BUG: Return the coefficients array directly - gh-13351 : BUG/MAINT: Tidy typeinfo.h and .c - gh-13359 : BUG: Make allow_pickle=False the default for loading - gh-13360 : DOC: fix some doctest failures - gh-13363 : BUG/MAINT: Tidy typeinfo.h and .c - gh-13381 : BLD: address mingw-w64 issue. Follow-up to gh-9977 - gh-13382 : REL: Prepare for the NumPy release. Cheers, Charles Harris

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grant proposal for core scientific Python projects (rejected)
by Ralf Gommers April 18, 2019

April 18, 2019

Hi all, A number of core projects (NumPy, SciPy, Matplotlib, Pandas, scikit-learn) got together and put in a proposal to NSF for a large 5 year grant, and it was unfortunately just rejected. We now published the proposal, which may be of interest: https://figshare.com/articles/Mid-Scale_Research_Infrastructure_-_The_Scien… . Those of you who are on Twitter may already know about this. First mention of this rejection on Twitter with a lot of conversation following: https://twitter.com/amuellerml/status/1117455802598662144. Full quote from Andreas Mueller, replying to a tweet that the first ever image of a black hole was built on Matplotlib, SciPy, NumPy, Pandas, Jupyter, AstroPy: "Slightly ironic that in the same week @NSF rejects a grant to fund the scipy ecosystem saying that working on it is not impactful enough and hiring developers to work on it is too expensive." And a follow-up conversation on Twitter about the rejection: https://twitter.com/amuellerml/status/1118617331058475008 This proposal was led by Columbia, who submitted it together with NumFOCUS and Quansight. It was largely written by Andreas Mueller (scikit-learn, also the PI), Andy Terrel (NumFOCUS) and myself (NumPy/SciPy), with a lot of valuable input from Thomas Caswell (Matplotlib), Jeff Reback (Pandas), Gina Helfrich (NumFOCUS), the other co-PIs, the core teams of the projects, and many others who pitched in ideas and advice. This was the first time we tried a proposal of this scale and ambition (as far as I know), and while it's disappointing that the NSF doesn't seem to value software much (not really news, nor unique to NSF), rejections are a normal part of submitting grant proposals and we now have a much better idea of what it will take to submit further proposals in the future. Which we plan on doing. Cheers, Ralf

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pinv2 and pinvh cutoff accuracy
by Ilhan Polat April 16, 2019

April 16, 2019

Dear all, In https://github.com/scipy/scipy/pull/10067 I proposed to change the default cutoff values for pinv2 and pinvh to match the values of pinv (which are also widely used). Please let me know if there is any objections to this. Feedback is most welcome. best, ilhan

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