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Change deprecated use of .astype() to .view() #1262

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Merged
merged 2 commits into from
Jul 27, 2021
Merged

Change deprecated use of .astype() to .view() #1262

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9a0dc8d
Change deprecated use of .astype() to .view()
Jul 15, 2021
acc8cc9
Merge entries in whatsnew
Jul 23, 2021
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4 changes: 3 additions & 1 deletion docs/sphinx/source/whatsnew/v0.9.0.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -179,7 +179,8 @@ Bug fixes
* Corrected an error affecting :py:func:`~pvlib.clearsky.detect_clearsky`
when data time step is not one minute. Error was introduced in v0.8.1.
(:issue:`1241`, :pull:`1242`)
* Corrected :py:func:`~pvlib.solarposition.spa_python` to avoid a future warning. (:pull:`1256`)
* Changed deprecated use of ``.astype()`` to ``.view()`` in :py:mod:`~pvlib.solarposition`.
(:pull:`1256`, :issue:`1261`, :pull:`1262`)

Testing
~~~~~~~
Expand Down Expand Up @@ -218,3 +219,4 @@ Contributors
* Joe Ranalli (:ghuser:`jranalli`)
* Chas Schweizer (:ghuser:`cpr-chas`)
* Yoann Louvet (:ghuser:`YoannUniKS`)
* Brandon Carpenter (:ghuser:`hashstat`)
14 changes: 7 additions & 7 deletions pvlib/solarposition.py
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Expand Up @@ -445,7 +445,7 @@ def sun_rise_set_transit_spa(times, latitude, longitude, how='numpy',

# must convert to midnight UTC on day of interest
utcday = pd.DatetimeIndex(times.date).tz_localize('UTC')
unixtime = np.array(utcday.astype(np.int64)/10**9)
unixtime = np.array(utcday.view(np.int64)/10**9)

spa = _spa_python_import(how)

Expand Down Expand Up @@ -1001,7 +1001,7 @@ def nrel_earthsun_distance(time, how='numpy', delta_t=67.0, numthreads=4):
except (TypeError, ValueError):
time = pd.DatetimeIndex([time, ])

unixtime = np.array(time.astype(np.int64)/10**9)
unixtime = np.array(time.view(np.int64)/10**9)

spa = _spa_python_import(how)

Expand Down Expand Up @@ -1381,8 +1381,8 @@ def hour_angle(times, longitude, equation_of_time):
naive_times = times.tz_localize(None) # naive but still localized
# hours - timezone = (times - normalized_times) - (naive_times - times)
hrs_minus_tzs = 1 / NS_PER_HR * (
2 * times.astype(np.int64) - times.normalize().astype(np.int64) -
naive_times.astype(np.int64))
2 * times.view(np.int64) - times.normalize().view(np.int64) -
naive_times.view(np.int64))
# ensure array return instead of a version-dependent pandas <T>Index
return np.asarray(
15. * (hrs_minus_tzs - 12.) + longitude + equation_of_time / 4.)
Expand All @@ -1392,7 +1392,7 @@ def _hour_angle_to_hours(times, hourangle, longitude, equation_of_time):
"""converts hour angles in degrees to hours as a numpy array"""
naive_times = times.tz_localize(None) # naive but still localized
tzs = 1 / NS_PER_HR * (
naive_times.astype(np.int64) - times.astype(np.int64))
naive_times.view(np.int64) - times.view(np.int64))
hours = (hourangle - longitude - equation_of_time / 4.) / 15. + 12. + tzs
return np.asarray(hours)

Expand All @@ -1406,7 +1406,7 @@ def _local_times_from_hours_since_midnight(times, hours):
# normalize local, naive times to previous midnight and add the hours until
# sunrise, sunset, and transit
return pd.DatetimeIndex(
(naive_times.normalize().astype(np.int64) +
(naive_times.normalize().view(np.int64) +
(hours * NS_PER_HR).astype(np.int64)).astype('datetime64[ns]'),
tz=tz_info)

Expand All @@ -1415,7 +1415,7 @@ def _times_to_hours_after_local_midnight(times):
"""convert local pandas datetime indices to array of hours as floats"""
times = times.tz_localize(None)
hrs = 1 / NS_PER_HR * (
times.astype(np.int64) - times.normalize().astype(np.int64))
times.view(np.int64) - times.normalize().view(np.int64))
return np.array(hrs)


Expand Down