v0.9.5.rst

v0.9.5 (March 18, 2023)

Starting with this version, new releases are no longer distributed through the pvlib conda channel. We recommend conda users install from the conda-forge channel instead (see :ref:`installation`).

Enhancements

• Added the optional string_factor parameter to :py:func:`pvlib.snow.loss_townsend`. (:issue:`1636`, :pull:`1653`)
• Added optional n_ar parameter to :py:func:`pvlib.iam.physical` to support an anti-reflective coating. (:issue:`1501`, :pull:`1616`)
• :py:func:`~pvlib.irradiance.boland` is another diffuse fraction, DF, estimation method similar to Erbs but uses a single logistic exponential correlation between DF and clearness index, kt, that is continuously differentiable and bounded between zero and one. (:pull:`1179`)
• Add model='gueymard2003', the airmass model used for REST and REST2, to :py:func:`~pvlib.atmosphere.get_relative_airmass`. (:pull:`1655`)
• Added an optional model parameter to :py:func:`pvlib.bifacial.infinite_sheds.get_irradiance` and :py:func:`pvlib.bifacial.infinite_sheds.get_irradiance_poa` to enable use of the hay-davies sky diffuse irradiance model instead of the default isotropic model. (:pull:`1668`)
• Added an optional vectorize parameter to :py:func:`pvlib.bifacial.infinite_sheds.get_irradiance` and :py:func:`pvlib.bifacial.infinite_sheds.get_irradiance_poa` which, when set to True, enables faster calculation but with increased memory usage. (:issue:`1680`, :pull:`1682`)
• Update the ADR inverter model parameter database by appending the ADR equivalents of all inverters in the current (2019) Sandia inverter model parameter database. (:pull:`1695`)
• Use Horner's Method to evaluate polynomials in :py:func:`~pvlib.irradiance.disc`, may decrease runtime by 20%. (:issue:`1180`, :pull:`1183`)

Bug fixes

• Added a limit to :py:func:`pvlib.snow.loss_townsend` to guard against incorrect loss results for systems that are near the ground. (:issue:`1636`, :pull:`1653`)
• Fixed incorrect mapping of requested parameters names when using :py:func:`!pvlib.iotools.get_psm3`. Also fixed the random reordering of the dataframe columns. (:issue:`1629`, :issue:`1647`, :pull:`1648`)
• When using utc_time_range with :py:func:`pvlib.iotools.read_ecmwf_macc`, the time index subset is now selected with nearest instead of before and after for consistency with cftime>=1.6.0. (:issue:`1609`, :pull:`1656`)
• :py:func:`~pvlib.ivtools.sdm.pvsyst_temperature_coeff` no longer raises a scipy deprecation warning (and is slightly more accurate). (:issue:`1644`, :pull:`1674`)

Testing

• Added Python 3.11 to test suite. (:pull:`1582`)
• Updated PSM3 test data files to match the new version 3.2.2 data returned by the PSM3 API. (:issue:`1591`, :pull:`1652`)
• Testing :py:func:`pvlib.pvsystem.singlediode`, :py:func:`pvlib.pvsystem.v_from_i`, and :py:func:`pvlib.pvsystem.i_from_v` against precisely generated IV curve data. (:issue:`411`, :pull:`1573`)

Documentation

• Remove LGTM.com integration. (:issue:`1550`, :pull:`1651`)

Benchmarking

• Added benchmarks for :py:mod:`pvlib.bifacial.infinite_sheds`. (:pull:`1627`)

Requirements

• Removed unnecessary nose test requirement. (:pull:`1637`)

Contributors

• Kevin Anderson
• Will Holmgren (:ghuser:`wholmgren`)
• Cliff Hansen (:ghuser:`cwhanse`)
• Adam R. Jensen (:ghuser:`adamrjensen`)
• Pratham Chauhan (:ghuser:`ooprathamm`)
• Karel De Brabandere (:ghuser:`kdebrab`)
• Mark Mikofski (:ghuser:`mikofski`)
• Anton Driesse (:ghuser:`adriesse`)
• Michael Deceglie (:ghuser:`mdeceglie`)
• Saurabh Aneja (:ghuser:`spaneja`)
• John Moseley
• Areeba Turabi (:ghuser:`aturabi`)
• Mark Campanelli (:ghuser:`markcampanelli`)
• Taos Transue (:ghuser:`reepoi`)
• Tim Townsend
• Tom Arjannikov (:ghuser:`Arjannikov`)