Pvlib

This is a bug fix release. See the 0.3.1 whats new documentation for details.

This is a major release from 0.2.2. It creates a cleaner separation between the use of procedural and object oriented code by changing the way that Location objects are used and adding ModelChain, PVSystem, LocalizedPVSystem classes. See the What's New documentation for much more.

This is a minor release from 0.2.1. It adds Python 3.5 compatibility, a `lookup_linke_turbidity` function, and fixes several small bugs.

This is a minor release from 0.2. It includes a large number of bug fixes for the IPython notebook tutorials and links to updated SAM files.

This is a major release from 0.1 and includes a large number of API changes,
several new features and enhancements along with a number of bug fixes.
We recommend that all users upgrade to this version.

Due to the large number of API changes, you will probably need to update your
code.

API changes
- Change variable names to conform with new
`Variables and style rules wiki <https://github.com/pvlib/pvlib-python/wiki/Variables-and-style-rules>`_.
This impacts many function declarations and return values.
Your existing code probably will not work! (:issue:`37`, :issue:`54`).
- Move `dirint` and `disc` algorithms from `clearsky.py`
to `irradiance.py` (:issue:`42`)
- Mark some `pvsystem.py` methods as private (:issue:`20`)
- Make output of `pvsystem.sapm_celltemp` a DataFrame (:issue:`54`)

Enhancements
- Add conda installer
- PEP8 fixups to solarposition.py and spa.py (:issue:`50`)
- Add optional `projection_ratio` keyword argument to the `haydavies`
calculator. Speeds calculations when irradiance changes but
solar position remains the same (:issue:`58`)
- Improved installation instructions in README.

Bug fixes
- fix local build of the documentation (:issue:`49`, :issue:`56`)
- The release date of 0.1 was fixed in the documentation
(see :ref:`whatsnew_0100`)
- fix casting of DateTimeIndex to int64 epoch timestamp on machines with 32 bit python int (:issue:`63`)
- fixed some docstrings with failing doctests (:issue:`62`)

Contributors
- Will Holmgren
- Rob Andrews
- bmu
- Tony Lorenzo