[Python-modules-commits] [python-pysolar] 01/10: Initial import from SVN tag 0.2.0
Wolfgang Borgert
debacle at moszumanska.debian.org
Fri Oct 3 23:36:03 UTC 2014
This is an automated email from the git hooks/post-receive script.
debacle pushed a commit to annotated tag 0.2.1
in repository python-pysolar.
commit 9d810360390000ade7b445450d672d635dd504d3
Author: Brandon Stafford <brandon at farb.(none)>
Date: Sat Mar 1 18:36:54 2008 -0500
Initial import from SVN tag 0.2.0
---
COPYING | 702 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
README | 26 +++
constants.py | 374 +++++++++++++++++++++++++++++++
shade.py | 41 ++++
shade_test.py | 69 ++++++
solar.py | 342 ++++++++++++++++++++++++++++
testsolar.py | 136 ++++++++++++
7 files changed, 1690 insertions(+)
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..15dd499
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,702 @@
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+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
+ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS
+OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY
+OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it
+does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+<http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type
+`show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the
+appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or
+school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL,
+see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your
+program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications
+with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+
diff --git a/README b/README
new file mode 100644
index 0000000..bc2986b
--- /dev/null
+++ b/README
@@ -0,0 +1,26 @@
+Pysolar performs calculations useful for the development of photovoltaic
+systems. Rough steps for use, until either forever or I have time to
+write more documentation:
+
+1. Install python.
+2. Get to a prompt that looks like: >>>
+3. >>> import solar
+4. >>> import datetime
+5. >>> d = datetime.datetime.utcnow()
+6. >>> lat = 42.0
+7. >>> long = -71.0
+8. >>> solar.GetAltitude(lat, long, d)
+9. >>> solar.GetAzimuth(lat, long, d)
+
+For better examples of usage, check http://pysolar.sourceforge.net/#examples
+
+At this point, Pysolar has basic functionality, but it is relatively untested.
+I did validate it against the data in a paper by Reda and Andreas; it agrees
+to 4 significant figures, but that's just one data point.
+
+If you use Pysolar, please let me know how accurate it is. It's difficult to
+measure sun location with great precision, but I'd love to hear reports of
+"Yeah, it worked to within a degree over the course of an afternoon in Spain."
+
+Brandon Stafford
+<first_name> @ pingswept org
\ No newline at end of file
diff --git a/constants.py b/constants.py
new file mode 100644
index 0000000..f0856c4
--- /dev/null
+++ b/constants.py
@@ -0,0 +1,374 @@
+#!/usr/bin/python
+
+# Constants for calculating the position of the sun relative to the earth
+
+# Copyright 2007 Brandon Stafford
+#
+# This file is part of Pysolar.
+#
+# Pysolar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pysolar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with Pysolar. If not, see <http://www.gnu.org/licenses/>.
+
+# Note about sources for the constants below:
+#
+# Most of the constants below come from a 2005 paper by Reda and Andreas:
+#
+# I. Reda and A. Andreas, "Solar Position Algorithm for Solar Radiation Applications,"
+# National Renewable Energy Laboratory, NREL/TP-560-34302, revised November 2005.
+# http://www.osti.gov/bridge/servlets/purl/15003974-iP3z6k/native/15003974.PDF
+#
+# However, it seems that Reda and Andreas took the bulk of the constants (L0, etc.)
+# from VSOP87:
+# http://en.wikipedia.org/wiki/Secular_variations_of_the_planetary_orbits#VSOP87
+#
+# See also ftp://ftp.imcce.fr/pub/ephem/planets/vsop87/VSOP87D.ear
+
+earth_radius = 6378140.0 # meters
+
+aberration_sin_terms = [[0,0,0,0,1],
+ [-2,0,0,2,2],
+ [0,0,0,2,2],
+ [0,0,0,0,2],
+ [0,1,0,0,0],
+ [0,0,1,0,0],
+ [-2,1,0,2,2],
+ [0,0,0,2,1],
+ [0,0,1,2,2],
+ [-2,-1,0,2,2],
+ [-2,0,1,0,0],
+ [-2,0,0,2,1],
+ [0,0,-1,2,2],
+ [2,0,0,0,0],
+ [0,0,1,0,1],
+ [2,0,-1,2,2],
+ [0,0,-1,0,1],
+ [0,0,1,2,1],
+ [-2,0,2,0,0],
+ [0,0,-2,2,1],
+ [2,0,0,2,2],
+ [0,0,2,2,2],
+ [0,0,2,0,0],
+ [-2,0,1,2,2],
+ [0,0,0,2,0],
+ [-2,0,0,2,0],
+ [0,0,-1,2,1],
+ [0,2,0,0,0],
+ [2,0,-1,0,1],
+ [-2,2,0,2,2],
+ [0,1,0,0,1],
+ [-2,0,1,0,1],
+ [0,-1,0,0,1],
+ [0,0,2,-2,0],
+ [2,0,-1,2,1],
+ [2,0,1,2,2],
+ [0,1,0,2,2],
+ [-2,1,1,0,0],
+ [0,-1,0,2,2],
+ [2,0,0,2,1],
+ [2,0,1,0,0],
+ [-2,0,2,2,2],
+ [-2,0,1,2,1],
+ [2,0,-2,0,1],
+ [2,0,0,0,1],
+ [0,-1,1,0,0],
+ [-2,-1,0,2,1],
+ [-2,0,0,0,1],
+ [0,0,2,2,1],
+ [-2,0,2,0,1],
+ [-2,1,0,2,1],
+ [0,0,1,-2,0],
+ [-1,0,1,0,0],
+ [-2,1,0,0,0],
+ [1,0,0,0,0],
+ [0,0,1,2,0],
+ [0,0,-2,2,2],
+ [-1,-1,1,0,0],
+ [0,1,1,0,0],
+ [0,-1,1,2,2],
+ [2,-1,-1,2,2],
+ [0,0,3,2,2],
+ [2,-1,0,2,2]]
+
+nutation_coefficients = [[-171996,-174.2,92025,8.9],
+ [-13187,-1.6,5736,-3.1],
+ [-2274,-0.2,977,-0.5],
+ [2062,0.2,-895,0.5],
+ [1426,-3.4,54,-0.1],
+ [712,0.1,-7,0],
+ [-517,1.2,224,-0.6],
+ [-386,-0.4,200,0],
+ [-301,0,129,-0.1],
+ [217,-0.5,-95,0.3],
+ [-158,0,0,0],
+ [129,0.1,-70,0],
+ [123,0,-53,0],
+ [63,0,0,0],
+ [63,0.1,-33,0],
+ [-59,0,26,0],
+ [-58,-0.1,32,0],
+ [-51,0,27,0],
+ [48,0,0,0],
+ [46,0,-24,0],
+ [-38,0,16,0],
+ [-31,0,13,0],
+ [29,0,0,0],
+ [29,0,-12,0],
+ [26,0,0,0],
+ [-22,0,0,0],
+ [21,0,-10,0],
+ [17,-0.1,0,0],
+ [16,0,-8,0],
+ [-16,0.1,7,0],
+ [-15,0,9,0],
+ [-13,0,7,0],
+ [-12,0,6,0],
+ [11,0,0,0],
+ [-10,0,5,0],
+ [-8,0,3,0],
+ [7,0,-3,0],
+ [-7,0,0,0],
+ [-7,0,3,0],
+ [-7,0,3,0],
+ [6,0,0,0],
+ [6,0,-3,0],
+ [6,0,-3,0],
+ [-6,0,3,0],
+ [-6,0,3,0],
+ [5,0,0,0],
+ [-5,0,3,0],
+ [-5,0,3,0],
+ [-5,0,3,0],
+ [4,0,0,0],
+ [4,0,0,0],
+ [4,0,0,0],
+ [-4,0,0,0],
+ [-4,0,0,0],
+ [-4,0,0,0],
+ [3,0,0,0],
+ [-3,0,0,0],
+ [-3,0,0,0],
+ [-3,0,0,0],
+ [-3,0,0,0],
+ [-3,0,0,0],
+ [-3,0,0,0],
+ [-3,0,0,0]]
+
+L0 = [[175347046.0,0,0],
+[3341656.0,4.6692568,6283.07585],
+[34894.0,4.6261,12566.1517],
+[3497.0,2.7441,5753.3849],
+[3418.0,2.8289,3.5231],
+[3136.0,3.6277,77713.7715],
+[2676.0,4.4181,7860.4194],
+[2343.0,6.1352,3930.2097],
+[1324.0,0.7425,11506.7698],
+[1273.0,2.0371,529.691],
+[1199.0,1.1096,1577.3435],
+[990,5.233,5884.927],
+[902,2.045,26.298],
+[857,3.508,398.149],
+[780,1.179,5223.694],
+[753,2.533,5507.553],
+[505,4.583,18849.228],
+[492,4.205,775.523],
+[357,2.92,0.067],
+[317,5.849,11790.629],
+[284,1.899,796.298],
+[271,0.315,10977.079],
+[243,0.345,5486.778],
+[206,4.806,2544.314],
+[205,1.869,5573.143],
+[202,2.4458,6069.777],
+[156,0.833,213.299],
+[132,3.411,2942.463],
+[126,1.083,20.775],
+[115,0.645,0.98],
+[103,0.636,4694.003],
+[102,0.976,15720.839],
+[102,4.267,7.114],
+[99,6.21,2146.17],
+[98,0.68,155.42],
+[86,5.98,161000.69],
+[85,1.3,6275.96],
+[85,3.67,71430.7],
+[80,1.81,17260.15],
+[79,3.04,12036.46],
+[71,1.76,5088.63],
+[74,3.5,3154.69],
+[74,4.68,801.82],
+[70,0.83,9437.76],
+[62,3.98,8827.39],
+[61,1.82,7084.9],
+[57,2.78,6286.6],
+[56,4.39,14143.5],
+[56,3.47,6279.55],
+[52,0.19,12139.55],
+[52,1.33,1748.02],
+[51,0.28,5856.48],
+[49,0.49,1194.45],
+[41,5.37,8429.24],
+[41,2.4,19651.05],
+[39,6.17,10447.39],
+[37,6.04,10213.29],
+[37,2.57,1059.38],
+[36,1.71,2352.87],
+[36,1.78,6812.77],
+[33,0.59,17789.85],
+[30,0.44,83996.85],
+[30,2.74,1349.87],
+[25,3.16,4690.48]]
+
+L1 = [[628331966747.0,0,0],
+[206059.0,2.678235,6283.07585],
+[4303.0,2.6351,12566.1517],
+[425.0,1.59,3.523],
+[119.0,5.796,26.298],
+[109.0,2.966,1577.344],
+[93,2.59,18849.23],
+[72,1.14,529.69],
+[68,1.87,398.15],
+[67,4.41,5507.55],
+[59,2.89,5223.69],
+[56,2.17,155.42],
+[45,0.4,796.3],
+[36,0.47,775.52],
+[29,2.65,7.11],
+[21,5.34,0.98],
+[19,1.85,5486.78],
+[19,4.97,213.3],
+[17,2.99,6275.96],
+[16,0.03,2544.31],
+[16,1.43,2146.17],
+[15,1.21,10977.08],
+[12,2.83,1748.02],
+[12,3.26,5088.63],
+[12,5.27,1194.45],
+[12,2.08,4694],
+[11,0.77,553.57],
+[10,1.3,3286.6],
+[10,4.24,1349.87],
+[9,2.7,242.73],
+[9,5.64,951.72],
+[8,5.3,2352.87],
+[6,2.65,9437.76],
+[6,4.67,4690.48]]
+
+L2 = [[52919.0,0,0],
+[8720.0,1.0721,6283.0758],
+[309.0,0.867,12566.152],
+[27,0.05,3.52],
+[16,5.19,26.3],
+[16,3.68,155.42],
+[10,0.76,18849.23],
+[9,2.06,77713.77],
+[7,0.83,775.52],
+[5,4.66,1577.34],
+[4,1.03,7.11],
+[4,3.44,5573.14],
+[3,5.14,796.3],
+[3,6.05,5507.55],
+[3,1.19,242.73],
+[3,6.12,529.69],
+[3,0.31,398.15],
+[3,2.28,553.57],
+[2,4.38,5223.69],
+[2,3.75,0.98]]
+
+L3 = [[289.0,5.844,6283.076],
+[35,0,0],
+[17,5.49,12566.15],
+[3,5.2,155.42],
+[1,4.72,3.52],
+[1,5.3,18849.23],
+[1,5.97,242.73]]
+
+L4 = [[114.0,3.142,0],
+[8,4.13,6283.08],
+[1,3.84,12566.15]]
+
+L5 = [[1,3.14,0]]
+
+B0 = [[280.0,3.199,84334.662],
+[102.0,5.422,5507.553],
+[80,3.88,5223.69],
+[44,3.7,2352.87],
+[32,4,1577.34]]
+
+B1 = [[9,3.9,5507.55],
+[6,1.73,5223.69]]
+
+
+R0 = [[100013989.0,0,0],
+[1670700.0,3.0984635,6283.07585],
+[13956.0,3.05525,12566.1517],
+[3084.0,5.1985,77713.7715],
+[1628.0,1.1739,5753.3849],
+[1576.0,2.8469,7860.4194],
+[925.0,5.453,11506.77],
+[542.0,4.564,3930.21],
+[472.0,3.661,5884.927],
+[346.0,0.964,5507.553],
+[329.0,5.9,5223.694],
+[307.0,0.299,5573.143],
+[243.0,4.273,11790.629],
+[212.0,5.847,1577.344],
+[186.0,5.022,10977.079],
+[175.0,3.012,18849.228],
+[110.0,5.055,5486.778],
+[98,0.89,6069.78],
+[86,5.69,15720.84],
+[86,1.27,161000.69],
+[85,0.27,17260.15],
+[63,0.92,529.69],
+[57,2.01,83996.85],
+[56,5.24,71430.7],
+[49,3.25,2544.31],
+[47,2.58,775.52],
+[45,5.54,9437.76],
+[43,6.01,6275.96],
+[39,5.36,4694],
+[38,2.39,8827.39],
+[37,0.83,19651.05],
+[37,4.9,12139.55],
+[36,1.67,12036.46],
+[35,1.84,2942.46],
+[33,0.24,7084.9],
+[32,0.18,5088.63],
+[32,1.78,398.15],
+[28,1.21,6286.6],
+[28,1.9,6279.55],
+[26,4.59,10447.39]]
+
+R1 = [[103019.0,1.10749,6283.07585],
+[1721.0,1.0644,12566.1517],
+[702.0,3.142,0],
+[32,1.02,18849.23],
+[31,2.84,5507.55],
+[25,1.32,5223.69],
+[18,1.42,1577.34],
+[10,5.91,10977.08],
+[9,1.42,6275.96],
+[9,0.27,5486.78]]
+
+R2 = [[4359.0,5.7846,6283.0758],
+[124.0,5.579,12566.152],
+[12,3.14,0],
+[9,3.63,77713.77],
+[6,1.87,5573.14],
+[3,5.47,18849]]
+
+R3 = [[145.0,4.273,6283.076],
+[7,3.92,12566.15]]
+
+R4 = [[4,2.56,6283.08]]
+
diff --git a/shade.py b/shade.py
new file mode 100644
index 0000000..0bcfb2d
--- /dev/null
+++ b/shade.py
@@ -0,0 +1,41 @@
+#!/usr/bin/python
+
+# Library for solar panel shading calculations
+
+# Copyright 2007 Brandon Stafford
+#
+# This file is part of Pysolar.
+#
+# Pysolar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pysolar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with Pysolar. If not, see <http://www.gnu.org/licenses/>.
+
+import math
+
+def GetSideByLawOfCosines(side_a, side_b, included_angle_deg):
+ return math.sqrt(pow((side_a), 2) + pow(side_b, 2) - (2 * side_a * side_b * math.cos(math.radians(included_angle_deg))))
+
+def GetXShade(width, x_spacing, azimuth_deg):
+ n = GetSideByLawOfCosines(width/2, x_spacing, azimuth_deg)
+ p = (width/2) * math.sin(math.radians(azimuth_deg))
+ theta_deg = math.degrees(math.asin(p/n))
+ alpha_deg = azimuth_deg + theta_deg
+ d = GetSideByLawOfCosines(width/2, n, alpha_deg)
+ gamma_deg = math.degrees(math.asin((n * math.sin(math.radians(alpha_deg)))/d))
+ shaded_width = d * math.cos(math.radians(gamma_deg))
+ if(pow(d, 2) + pow(width/2, 2) < pow(n, 2)): # check for obtuse triangle
+ shaded_width = 0
+ #print "theta in deg:", theta_deg, "gamma in deg:", gamma_deg, "shaded width:", shaded_width
+ return min(shaded_width, width)
+
+def GetYShade(height, y_spacing, altitude_deg):
+ return GetXShade(height, y_spacing, 90 - altitude_deg)
diff --git a/shade_test.py b/shade_test.py
new file mode 100644
index 0000000..ca14632
--- /dev/null
+++ b/shade_test.py
@@ -0,0 +1,69 @@
+#!/usr/bin/python
+
+# Test of solar panel shading calculations
+
+# Copyright 2007 Brandon Stafford
+#
+# This file is part of Pysolar.
+#
+# Pysolar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pysolar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with Pysolar. If not, see <http://www.gnu.org/licenses/>.
+
+import solar
+import shade
+import datetime
+from pylab import *
+#from itertools import izip
+
+def ShadeTest():
+ latitude_deg = 42.364908
+ longitude_deg = -71.112828
+ width = 100
+ height = 200
+ area = width * height
+ d = datetime.datetime.utcnow()
+ thirty_minutes = datetime.timedelta(hours = 0.5)
+ times = []
+ powers = []
+ shade_x = []
+ shade_y = []
+ shaded_powers = []
+ for i in range(48):
+ timestamp = d.ctime()
+ altitude_deg = solar.GetAltitude(latitude_deg, longitude_deg, d)
+ azimuth_deg = solar.GetAzimuth(latitude_deg, longitude_deg, d)
+ power = solar.GetRadiationDirect(d, altitude_deg)
+ xs = shade.GetXShade(width, 120, azimuth_deg)
+ ys = shade.GetYShade(height, 120, altitude_deg)
+ shaded_area = xs * ys
+ shaded_percentage = shaded_area/area
+ if (altitude_deg > 0):
+ times.append(float(d.hour) + (float(d.minute)/60) - 5) # - 5 to adjust to EST
+ powers.append(power)
+ shade_x.append(xs)
+ shade_y.append(ys)
+ shaded_powers.append(power * (1 - shaded_percentage))
+ #print timestamp, "UTC", altitude_deg, azimuth_deg, power
+ d = d + thirty_minutes
+ print times
+ print powers
+ print shade_x
+
+ plot(times, shaded_powers, times, powers) # plot ends up with a line across it because x values wrap around
+ show() # could fix that with sort function below
+
+#def sort(list_to_sort, order): # based on a function by Ron Adam on some Python mailing list
+# d = dict(izip(order, list_to_sort))
+# assert len(d) == len(list_to_sort)
+# list_to_sort[:] = list(d[v] for v in sorted(d))
+# return list_to_sort
diff --git a/solar.py b/solar.py
new file mode 100644
index 0000000..e23aa6a
--- /dev/null
+++ b/solar.py
@@ -0,0 +1,342 @@
+#!/usr/bin/python
+
+# Library for calculating location of the sun
+
+# Copyright 2007 Brandon Stafford
+#
+# This file is part of Pysolar.
+#
+# Pysolar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pysolar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with Pysolar. If not, see <http://www.gnu.org/licenses/>.
+
+import math
+import datetime
+import constants
+import sys
+
+#if __name__ == "__main__":
+def SolarTest():
+ latitude_deg = 42.364908
+ longitude_deg = -71.112828
+ d = datetime.datetime.utcnow()
+ thirty_minutes = datetime.timedelta(hours = 0.5)
+ for i in range(48):
+ timestamp = d.ctime()
+ altitude_deg = GetAltitude(latitude_deg, longitude_deg, d)
+ azimuth_deg = GetAzimuth(latitude_deg, longitude_deg, d)
+ power = GetRadiationDirect(d, altitude_deg)
+ if (altitude_deg > 0):
+ print timestamp, "UTC", altitude_deg, azimuth_deg, power
+ d = d + thirty_minutes
+
+def EquationOfTime(day):
+ b = (2 * math.pi / 364.0) * (day - 81)
+ return (9.87 * math.sin(2 *b)) - (7.53 * math.cos(b)) - (1.5 * math.sin(b))
+
+def GetAberrationCorrection(r): # r is earth radius vector [astronomical units]
+ return -20.4898/(3600.0 * r)
+
+def GetAirMassRatio(altitude_deg):
+ # from Masters, p. 412
+ # warning: pukes on input of zero
+ return (1/math.sin(math.radians(altitude_deg)))
+
+def GetAltitude(latitude_deg, longitude_deg, utc_datetime):
+
+# expect 19 degrees for solar.GetAltitude(42.364908,-71.112828,datetime.datetime(2007, 2, 18, 20, 13, 1, 130320))
+
+ day = GetDayOfYear(utc_datetime)
+ declination_rad = math.radians(GetDeclination(day))
+ latitude_rad = math.radians(latitude_deg)
+ hour_angle = GetHourAngle(utc_datetime, longitude_deg)
+
+ first_term = math.cos(latitude_rad) * math.cos(declination_rad) * math.cos(math.radians(hour_angle))
+ second_term = math.sin(latitude_rad) * math.sin(declination_rad)
+ return math.degrees(math.asin(first_term + second_term))
+
+def GetApparentExtraterrestrialFlux(day):
+ # from Masters, p. 412
+ return 1160 + (75 * math.sin((360/365) * (day - 275)))
+
+def GetApparentSiderealTime(julian_day, jme, nutation):
+ return GetMeanSiderealTime(julian_day) + nutation['longitude'] * math.cos(GetTrueEclipticObliquity(jme, nutation))
+
+def GetApparentSunLongitude(geocentric_longitude, nutation, ab_correction):
+ return geocentric_longitude + nutation['longitude'] + ab_correction
+
+def GetArgumentOfLatitudeOfMoon(jce):
+ return 93.27191 + (483202.017538 * jce) - (0.0036825 * pow(jce, 2)) + (pow(jce, 3) / 327270.0)
+
+def GetAzimuth(latitude_deg, longitude_deg, utc_datetime):
+# expect -50 degrees for solar.GetAzimuth(42.364908,-71.112828,datetime.datetime(2007, 2, 18, 20, 18, 0, 0))
+ day = GetDayOfYear(utc_datetime)
+ declination_rad = math.radians(GetDeclination(day))
+ latitude_rad = math.radians(latitude_deg)
+ hour_angle_rad = math.radians(GetHourAngle(utc_datetime, longitude_deg))
+ altitude_rad = math.radians(GetAltitude(latitude_deg, longitude_deg, utc_datetime))
+
+ azimuth_rad = math.asin(math.cos(declination_rad) * math.sin(hour_angle_rad) / math.cos(altitude_rad))
+
+ if(math.cos(hour_angle_rad) >= (math.tan(declination_rad) / math.tan(latitude_rad))):
+ return math.degrees(azimuth_rad)
+ else:
+ return (180 - math.degrees(azimuth_rad))
+
+def GetCoefficient(jme, constant_array):
+ total = 0
+ for i in range(len(constant_array)):
+ total = total + (constant_array[i-1][0] * math.cos(constant_array[i-1][1] + (constant_array[i-1][2] * jme)))
+ return total
+
+def GetDayOfYear(utc_datetime):
+ year_start = datetime.datetime(utc_datetime.year, 1, 1,)
+ delta = (utc_datetime - year_start)
+ return delta.days
+
+def GetDeclination(day):
+ return 23.45 * math.sin((2 * math.pi / 365.0) * (day - 81))
+
+def GetEquatorialHorizontalParallax( radius_vector):
+ return 8.794 / (3600 / radius_vector)
+
+def GetFlattenedLatitude(latitude):
+ latitude_rad = math.radians(latitude)
+ return math.degrees(math.atan(0.99664719 * math.tan(latitude_rad)))
+
+def GetGeocentricLatitude(jme):
+ return -1 * GetHeliocentricLatitude(jme)
+
+def GetGeocentricLongitude(jme):
+ return (GetHeliocentricLongitude(jme) + 180) % 360
+
+def GetGeocentricSunDeclination(apparent_sun_longitude, true_ecliptic_obliquity, geocentric_latitude):
+ apparent_sun_longitude_rad = math.radians(apparent_sun_longitude)
+ true_ecliptic_obliquity_rad = math.radians(true_ecliptic_obliquity)
+ geocentric_latitude_rad = math.radians(geocentric_latitude)
+
+ a = math.sin(geocentric_latitude_rad) * math.cos(true_ecliptic_obliquity_rad)
+ b = math.cos(geocentric_latitude_rad) * math.sin(true_ecliptic_obliquity_rad) * math.sin(apparent_sun_longitude_rad)
+ delta = math.asin(a + b)
+ return math.degrees(delta)
+
+def GetGeocentricSunRightAscension(apparent_sun_longitude, true_ecliptic_obliquity, geocentric_latitude):
+ apparent_sun_longitude_rad = math.radians(apparent_sun_longitude)
+ true_ecliptic_obliquity_rad = math.radians(true_ecliptic_obliquity)
+ geocentric_latitude_rad = math.radians(geocentric_latitude)
+
+ a = math.sin(apparent_sun_longitude_rad) * math.cos(true_ecliptic_obliquity_rad)
+ b = math.tan(geocentric_latitude_rad) * math.sin(true_ecliptic_obliquity_rad)
+ c = math.cos(apparent_sun_longitude_rad)
+ alpha = math.atan2((a - b), c)
+ return math.degrees(alpha) % 360
+
+def GetHeliocentricLatitude(jme):
+ b0 = GetCoefficient(jme, constants.B0)
+ b1 = GetCoefficient(jme, constants.B1)
+ return math.degrees((b0 + (b1 * jme)) / pow(10, 8))
+
+def GetHeliocentricLongitude(jme):
+ l0 = GetCoefficient(jme, constants.L0)
+ l1 = GetCoefficient(jme, constants.L1)
+ l2 = GetCoefficient(jme, constants.L2)
+ l3 = GetCoefficient(jme, constants.L3)
+ l4 = GetCoefficient(jme, constants.L4)
+ l5 = GetCoefficient(jme, constants.L5)
+
+ l = (l0 + (l1 * jme) + (l2 * pow(jme, 2)) + (l3 * pow(jme, 3)) + (l4 * pow(jme, 4)) + (l5 * pow(jme, 5))) / pow(10, 8)
+ return math.degrees(l) % 360
+
+def GetHourAngle(utc_datetime, longitude_deg):
+ solar_time = GetSolarTime(longitude_deg, utc_datetime)
+ return 15 * (12 - solar_time)
+
+def GetIncidenceAngle(topocentric_zenith_angle, slope, slope_orientation, topocentric_azimuth_angle):
+ tza_rad = math.radians(topocentric_zenith_angle)
+ slope_rad = math.radians(slope)
+ so_rad = math.radians(slope_orientation)
+ taa_rad = math.radians(topocentric_azimuth_angle)
+ return math.degrees(math.acos(math.cos(tza_rad) * math.cos(slope_rad) + math.sin(slope_rad) * math.sin(tza_rad) * math.cos(taa_rad - math.pi - so_rad)))
+
+def GetJulianCentury(julian_day):
+ """You get the Julian century or Julian ephemeris century back, depending on whether you supply
+ the Julian day or the Julian ephemeris day."""
+ return (julian_day - 2451545.0) / 36525.0
+
+def GetJulianDay(utc_datetime): # based on NREL/TP-560-34302 by Andreas and Reda
+ # does not accept years before 0 because of bounds check on Python's datetime.year field
+ year = utc_datetime.year
+ month = utc_datetime.month
+ if(month <= 2): # shift to accomodate leap years?
+ year = year - 1
+ month = month + 12
+ day = utc_datetime.day + (((utc_datetime.hour * 3600.0) + (utc_datetime.minute * 60.0) + utc_datetime.second) / 86400.0)
+ gregorian_offset = 2 - math.floor(year / 100) + math.floor(math.floor(year / 100) / 4)
+ julian_day = math.floor(365.25*(year + 4716)) + math.floor(30.6001 *(month + 1)) + day - 1524.5
+ if (julian_day <= 2299160):
+ return julian_day # before October 5, 1852
+ else:
+ return julian_day + gregorian_offset # after October 5, 1852
+
+def GetJulianEphemerisDay(julian_day, delta_seconds):
+ return julian_day + (delta_seconds / 86400.0)
+
+def GetJulianEphemerisMillenium(julian_ephemeris_century):
+ return (julian_ephemeris_century / 10.0)
+
+def GetLongitudeOfAscendingNode(jce):
+ return 125.04452 - (1934.136261 * jce) + (0.0020708 * pow(jce, 2)) + (pow(jce, 3) / 450000.0)
+
+def GetLocalHourAngle(apparent_sidereal_time, longitude, geocentric_sun_right_ascension):
+ return (apparent_sidereal_time + longitude - geocentric_sun_right_ascension) % 360
+
+def GetMeanElongationOfMoon(jce):
+ return 297.85036 + (445267.111480 * jce) - (0.0019142 * pow(jce, 2)) + (pow(jce, 3) / 189474.0)
+
+def GetMeanAnomalyOfMoon(jce):
+ return 134.96298 + (477198.867398 * jce) + (0.0086972 * pow(jce, 2)) + (pow(jce, 3) / 56250.0)
+
+def GetMeanAnomalyOfSun(jce):
+ return 357.52772 + (35999.050340 * jce) - (0.0001603 * pow(jce, 2)) - (pow(jce, 3) / 300000.0)
+
+def GetMeanSiderealTime(julian_day):
+ jc = GetJulianCentury(julian_day)
+ sidereal_time = 280.46061837 + (360.98564736629 * (julian_day - 2451545.0)) + (0.000387933 * pow(jc, 2)) \
+ - (pow(jc, 3) / 38710000)
+ return sidereal_time % 360
+
+def GetNutationAberrationXY(jce):
+ y = constants.aberration_sin_terms
+ x = []
+ # order of 5 x.append lines below is important
+ x.append(GetMeanElongationOfMoon(jce))
+ x.append(GetMeanAnomalyOfSun(jce))
+ x.append(GetMeanAnomalyOfMoon(jce))
+ x.append(GetArgumentOfLatitudeOfMoon(jce))
+ x.append(GetLongitudeOfAscendingNode(jce))
+ sigmaxy = 0.0
+ for j in range(len(x)):
+ sigmaxy += x[j] * y[0][j]
+ return sigmaxy
+
+def GetNutation(jde):
+ abcd = constants.nutation_coefficients
+ jce = GetJulianCentury(jde)
+ sigmaxy = GetNutationAberrationXY(jce)
+ nutation_long = []
+ nutation_oblique = []
+
+ for i in range(len(abcd)):
+ nutation_long.append((abcd[i][0] + (abcd[i][1] * jce)) * math.sin(math.radians(sigmaxy)))
+ nutation_oblique.append((abcd[i][2] + (abcd[i][3] * jce)) * math.cos(math.radians(sigmaxy)))
+
+ # 36000000 scales from 0.0001 arcseconds to degrees
+ nutation = {'longitude' : sum(nutation_long)/36000000.0, 'obliquity' : sum(nutation_oblique)/36000000.0}
+
+ return nutation
+
+def GetOpticalDepth(day):
+ # from Masters, p. 412
+ return 0.174 + (0.035 * math.sin((360/365) * (day - 100)))
+
+def GetParallaxSunRightAscension(projected_radial_distance, equatorial_horizontal_parallax, local_hour_angle, geocentric_sun_declination, projected_axial_distance):
+ prd = projected_radial_distance
+ ehp_rad = math.radians(equatorial_horizontal_parallax)
+ lha_rad = math.radians(local_hour_angle)
+ gsd_rad = math.radians(geocentric_sun_declination)
+ pad = projected_axial_distance
+ a = -1 * prd * math.sin(ehp_rad) * math.sin(lha_rad)
+ b = math.cos(gsd_rad) - pad * math.sin(ehp_rad) * math.cos(lha_rad)
+ parallax = math.atan2(a, b)
+ return math.degrees(parallax)
+
+def GetProjectedRadialDistance(elevation, latitude):
+ flattened_latitude_rad = math.radians(GetFlattenedLatitude(latitude))
+ latitude_rad = math.radians(latitude)
+ return math.cos(flattened_latitude_rad) + (elevation * math.cos(latitude_rad) / constants.earth_radius)
+
+def GetProjectedAxialDistance(elevation, latitude):
+ flattened_latitude_rad = math.radians(GetFlattenedLatitude(latitude))
+ latitude_rad = math.radians(latitude)
+ return 0.99664719 * math.sin(flattened_latitude_rad) + (elevation * math.sin(latitude_rad) / constants.earth_radius)
+
+def GetRadiationDirect(utc_datetime, altitude_deg):
+ # from Masters, p. 412
+ day = GetDayOfYear(utc_datetime)
+ flux = GetApparentExtraterrestrialFlux(day)
+ optical_depth = GetOpticalDepth(day)
+ air_mass_ratio = GetAirMassRatio(altitude_deg)
+ return flux * math.exp(-1 * optical_depth * air_mass_ratio)
+
+def GetRadiusVector(jme):
+ r0 = GetCoefficient(jme, constants.R0)
+ r1 = GetCoefficient(jme, constants.R1)
+ r2 = GetCoefficient(jme, constants.R2)
+ r3 = GetCoefficient(jme, constants.R3)
+ r4 = GetCoefficient(jme, constants.R4)
+
+ return (r0 + (r1 * jme) + (r2 * pow(jme, 2)) + (r3 * pow(jme, 3)) + (r4 * pow(jme, 4))) / pow(10, 8)
+
+def GetRefractionCorrection(pressure_millibars, temperature_celsius, topocentric_elevation_angle):
+ tea = topocentric_elevation_angle
+ temperature_kelvin = temperature_celsius + 273.15
+ a = pressure_millibars * 283.0 * 1.02
+ b = 1010.0 * temperature_kelvin * 60.0 * math.tan(math.radians(tea + (10.3/(tea + 5.11))))
+ return a / b
+
+def GetSolarTime(longitude_deg, utc_datetime):
+ day = GetDayOfYear(utc_datetime)
+ return (((utc_datetime.hour * 60) + utc_datetime.minute + (4 * longitude_deg) + EquationOfTime(day))/60)
+
+def GetTopocentricAzimuthAngle(topocentric_local_hour_angle, latitude, topocentric_sun_declination):
+ tlha_rad = math.radians(topocentric_local_hour_angle)
+ latitude_rad = math.radians(latitude)
+ tsd_rad = math.radians(topocentric_sun_declination)
+ a = math.sin(tlha_rad)
+ b = math.cos(tlha_rad) * math.sin(latitude_rad) - math.tan(tsd_rad) * math.cos(latitude_rad)
+ return 180.0 + math.degrees(math.atan2(a, b)) % 360
+
+def GetTopocentricElevationAngle(latitude, topocentric_sun_declination, topocentric_local_hour_angle):
+ latitude_rad = math.radians(latitude)
+ tsd_rad = math.radians(topocentric_sun_declination)
+ tlha_rad = math.radians(topocentric_local_hour_angle)
+ return math.degrees(math.asin((math.sin(latitude_rad) * math.sin(tsd_rad)) + math.cos(latitude_rad) * math.cos(tsd_rad) * math.cos(tlha_rad)))
+
+def GetTopocentricLocalHourAngle(local_hour_angle, parallax_sun_right_ascension):
+ return local_hour_angle - parallax_sun_right_ascension
+
+def GetTopocentricSunDeclination(geocentric_sun_declination, projected_axial_distance, equatorial_horizontal_parallax, parallax_sun_right_ascension, local_hour_angle):
+ gsd_rad = math.radians(geocentric_sun_declination)
+ pad = projected_axial_distance
+ ehp_rad = math.radians(equatorial_horizontal_parallax)
+ a = (math.sin(gsd_rad) - pad * math.sin(ehp_rad)) * math.cos(parallax_sun_right_ascension)
+ b = math.cos(gsd_rad) - (pad * math.sin(ehp_rad) * math.cos(local_hour_angle))
+ return math.degrees(math.atan2(a, b))
+
+def GetTopocentricSunRightAscension(projected_radial_distance, equatorial_horizontal_parallax, local_hour_angle, projected_axial_distance,
+ apparent_sun_longitude, true_ecliptic_obliquity, geocentric_latitude):
+ gsd = GetGeocentricSunDeclination(apparent_sun_longitude, true_ecliptic_obliquity, geocentric_latitude)
+ psra = GetParallaxSunRightAscension(projected_radial_distance, equatorial_horizontal_parallax, local_hour_angle, gsd, projected_axial_distance)
+ gsra = GetGeocentricSunRightAscension(apparent_sun_longitude, true_ecliptic_obliquity, geocentric_latitude)
+ return psra + gsra
+
+def GetTopocentricZenithAngle(latitude, topocentric_sun_declination, topocentric_local_hour_angle, pressure_millibars, temperature_celsius):
+ tea = GetTopocentricElevationAngle(latitude, topocentric_sun_declination, topocentric_local_hour_angle)
+ return 90 - tea - GetRefractionCorrection(pressure_millibars, temperature_celsius, tea)
+
+def GetTrueEclipticObliquity(jme, nutation):
+ u = jme/10.0
+ mean_obliquity = 84381.448 - (4680.93 * u) - (1.55 * pow(u, 2)) + (1999.25 * pow(u, 3)) \
+ - (51.38 * pow(u, 4)) -(249.67 * pow(u, 5)) - (39.05 * pow(u, 6)) + (7.12 * pow(u, 7)) \
+ + (27.87 * pow(u, 8)) + (5.79 * pow(u, 9)) + (2.45 * pow(u, 10))
+ return (mean_obliquity / 3600.0) + nutation['obliquity']
+
diff --git a/testsolar.py b/testsolar.py
new file mode 100644
index 0000000..5b2f0ba
--- /dev/null
+++ b/testsolar.py
@@ -0,0 +1,136 @@
+#!/usr/bin/python
+
+# Library for calculating location of the sun
+
+# Copyright 2007 Brandon Stafford
+#
+# This file is part of Pysolar.
+#
+# Pysolar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pysolar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with Pysolar. If not, see <http://www.gnu.org/licenses/>.
+
+import solar
+import constants
+import datetime
+import unittest
+
+class testSolar(unittest.TestCase):
+
+ def setUp(self):
+ self.d = datetime.datetime(2003, 10, 17, 19, 30, 30)
+ self.longitude = -105.1786
+ self.latitude = 39.742476
+ self.pressure = 820.0 # millibars
+ self.elevation = 1830.14 # meters
+ self.temperature = 11.0 # degrees Celsius
+ self.slope = 30.0 # degrees
+ self.slope_orientation = -10.0 # degrees east from south
+ self.jd = solar.GetJulianDay(self.d)
+ self.jde = solar.GetJulianEphemerisDay(self.jd, 65.284)
+ self.jce = solar.GetJulianCentury(self.jde)
+ self.jme = solar.GetJulianEphemerisMillenium(self.jce)
+ self.geocentric_longitude = solar.GetGeocentricLongitude(self.jme)
+ self.geocentric_latitude = solar.GetGeocentricLatitude(self.jme)
+ self.nutation = solar.GetNutation(self.jde)
+ self.radius_vector = solar.GetRadiusVector(self.jme)
+ self.true_ecliptic_obliquity = solar.GetTrueEclipticObliquity(self.jme, self.nutation)
+ self.aberration_correction = solar.GetAberrationCorrection(self.radius_vector)
+ self.apparent_sun_longitude = solar.GetApparentSunLongitude(self.geocentric_longitude, self.nutation, self.aberration_correction)
+ self.apparent_sidereal_time = solar.GetApparentSiderealTime(self.jd, self.jme, self.nutation)
+ self.geocentric_sun_right_ascension = solar.GetGeocentricSunRightAscension(self.apparent_sun_longitude, self.true_ecliptic_obliquity, self.geocentric_latitude)
+ self.geocentric_sun_declination = solar.GetGeocentricSunDeclination(self.apparent_sun_longitude, self.true_ecliptic_obliquity, self.geocentric_latitude)
+ self.local_hour_angle = solar.GetLocalHourAngle(self.apparent_sidereal_time, self.longitude, self.geocentric_sun_right_ascension)
+ self.equatorial_horizontal_parallax = solar.GetEquatorialHorizontalParallax(self.radius_vector)
+ self.projected_radial_distance = solar.GetProjectedRadialDistance(self.elevation, self.latitude)
+ self.projected_axial_distance = solar.GetProjectedAxialDistance(self.elevation, self.latitude)
+ self.topocentric_sun_right_ascension = solar.GetTopocentricSunRightAscension(self.projected_radial_distance,
+ self.equatorial_horizontal_parallax, self.local_hour_angle, self.projected_axial_distance, self.apparent_sun_longitude, self.true_ecliptic_obliquity, self.geocentric_latitude)
+ self.parallax_sun_right_ascension = solar.GetParallaxSunRightAscension(self.projected_radial_distance, self.equatorial_horizontal_parallax, self.local_hour_angle, self.geocentric_sun_declination, self.projected_axial_distance)
+ self.topocentric_sun_declination = solar.GetTopocentricSunDeclination(self.geocentric_sun_declination, self.projected_axial_distance, self.equatorial_horizontal_parallax, self.parallax_sun_right_ascension, self.local_hour_angle)
+ self.topocentric_local_hour_angle = solar.GetTopocentricLocalHourAngle(self.local_hour_angle, self.parallax_sun_right_ascension)
+ self.topocentric_zenith_angle = solar.GetTopocentricZenithAngle(self.latitude, self.topocentric_sun_declination, self.topocentric_local_hour_angle, self.pressure, self.temperature)
+ self.topocentric_azimuth_angle = solar.GetTopocentricAzimuthAngle(self.topocentric_local_hour_angle, self.latitude, self.topocentric_sun_declination)
+ self.incidence_angle = solar.GetIncidenceAngle(self.topocentric_zenith_angle, self.slope, self.slope_orientation, self.topocentric_azimuth_angle)
+
+ def testGetJulianDay(self):
+ self.assertAlmostEqual(2452930.312847, self.jd, 6) # value from Reda and Andreas (2005)
+
+ def testGetJulianEphemerisDay(self):
+ self.assertAlmostEqual(2452930.3136, self.jde, 4) # value not validated
+
+ def testGetJulianCentury(self):
+ self.assertAlmostEqual(0.0379278193792, self.jce, 12) # value not validated
+
+ def testGetJulianEphemerisMillenium(self):
+ self.assertAlmostEqual(0.00379278193792, self.jme, 13) # value not validated
+
+ def testGetGeocentricLongitude(self):
+ self.assertAlmostEqual(204.0182635175, self.geocentric_longitude, 4) # value from Reda and Andreas (2005)
+
+ def testGetGeocentricLatitude(self):
+ self.assertAlmostEqual(0.0001011219, self.geocentric_latitude, 9) # value from Reda and Andreas (2005)
+
+ def testGetNutation(self):
+ self.assertAlmostEqual(0.00166657, self.nutation['obliquity'], 4) # value from Reda and Andreas (2005)
+ self.assertAlmostEqual(-0.00399840, self.nutation['longitude'], 4) # value from Reda and Andreas (2005)
+
+ def testGetRadiusVector(self):
+ self.assertAlmostEqual(0.9965421031, self.radius_vector, 7) # value from Reda and Andreas (2005)
+
+ def testGetTrueEclipticObliquity(self):
+ self.assertAlmostEqual(23.440465, self.true_ecliptic_obliquity, 4) # value from Reda and Andreas (2005)
+
+ def testGetAberrationCorrection(self):
+ self.assertAlmostEqual(-0.0057113603, self.aberration_correction, 9) # value not validated
+
+ def testGetApparentSunLongitude(self):
+ self.assertAlmostEqual(204.0085537528, self.apparent_sun_longitude, 4) # value from Reda and Andreas (2005)
+
+# apparent_sidereal_time: 318.516064565
+
+ def testGetGeocentricSunRightAscension(self):
+ self.assertAlmostEqual(202.22741, self.geocentric_sun_right_ascension, 4) # value from Reda and Andreas (2005)
+
+ def testGetGeocentricSunDeclination(self):
+ self.assertAlmostEqual(-9.31434, self.geocentric_sun_declination, 5) # value from Reda and Andreas (2005)
+
+ def testGetLocalHourAngle(self):
+ self.assertAlmostEqual(11.105900, self.local_hour_angle, 2) # value from Reda and Andreas (2005)
+
+ def testGetProjectedRadialDistance(self):
+ self.assertAlmostEqual(0.7702006, self.projected_radial_distance, 6) # value not validated
+
+ def testGetTopocentricSunRightAscension(self):
+ self.assertAlmostEqual(202.22741, self.topocentric_sun_right_ascension, 3) # value from Reda and Andreas (2005)
+
+ def testGetParallaxSunRightAscension(self):
+ self.assertAlmostEqual(-0.00036612, self.parallax_sun_right_ascension, 8) # value not validated
+
+ def testGetTopocentricSunDeclination(self):
+ self.assertAlmostEqual(-9.316179, self.topocentric_sun_declination, 3) # value from Reda and Andreas (2005)
+
+ def testGetTopocentricLocalHourAngle(self):
+ self.assertAlmostEqual(11.10629, self.topocentric_local_hour_angle, 2) # value from Reda and Andreas (2005)
+
+ def testGetTopocentricZenithAngle(self):
+ self.assertAlmostEqual(50.11162, self.topocentric_zenith_angle, 2) # value from Reda and Andreas (2005)
+
+ def testGetTopocentricAzimuthAngle(self):
+ self.assertAlmostEqual(194.34024, self.topocentric_azimuth_angle, 1) # value from Reda and Andreas (2005)
+
+ def testGetIncidenceAngle(self):
+ self.assertAlmostEqual(25.18700, self.incidence_angle, 2) # value from Reda and Andreas (2005)
+
+if __name__ == "__main__":
+ unittest.main()
+
--
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