Merge pull request #48 from alorenzo175/numba-spa

Python translation of NREL SPA code

Author: wholmgren

.travis.yml

@@ -26,6 +26,7 @@ before_install:
 install:
     - echo "install"
     - conda install --yes python=$TRAVIS_PYTHON_VERSION numpy scipy pandas=$PD_VERSION nose pytz ephem
+    - test $PD_VERSION != 0.13.1 && conda install --yes "numba>=0.17" || echo "Not installing numba"
     - conda install --yes coverage
     - pip install coveralls
     - python setup.py install

docs/sphinx/source/whatsnew/v0.1.0.txt

@@ -24,6 +24,7 @@ New features
 * Library is Python 3.3 and 3.4 compatible
 * Add What's New section to docs (:issue:`10`)
 * Add PyEphem option to solar position calculations. 
+* Add a Python translation of NREL's SPA algorithm.
 * ``irradiance.py`` has more AOI, projection, and irradiance sum and calculation functions
 * TMY data import has a ``coerce_year`` option
 * TMY data can be loaded from a url (:issue:`5`)

pvlib/__init__.py

@@ -10,3 +10,4 @@
 from pvlib import tmy
 from pvlib import tracking
 from pvlib import pvsystem
+from pvlib import spa