TestRayleigh.test_get_reflectance_no_rsr() - Code Metrics - Inspection of "Fix Rayleigh corrector to work with dask" - pytroll/pyspectral - Measure and Improve Code Quality continuously with Scrutinizer

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created 2018-04-08 21:07 UTC

TestRayleigh.test_get_reflectance_no_rsr() B

↳ Parent: TestRayleigh

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cc	2
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f	1

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Copyright (c) 2016, 2017, 2018 Adam.Dybbroe

# Author(s):

#   Adam.Dybbroe <[email protected]>

# 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/>.

"""Unittest for the rayleigh correction utilities
"""

import os
import sys
from mock import patch
import numpy as np
import dask.array as da
from pyspectral import rayleigh
from pyspectral.rayleigh import BandFrequencyOutOfRange
from pyspectral.tests.data import (
    TEST_RAYLEIGH_LUT,
    TEST_RAYLEIGH_AZID_COORD,
    TEST_RAYLEIGH_SUNZ_COORD,
    TEST_RAYLEIGH_SATZ_COORD,
    TEST_RAYLEIGH_WVL_COORD)
from pyspectral.utils import RSR_DATA_VERSION

if sys.version_info < (2, 7):
    import unittest2 as unittest
else:
    import unittest


TEST_RAYLEIGH_RESULT1 = np.array([10.40727436,   8.69775471], dtype='float32')
TEST_RAYLEIGH_RESULT2 = np.array([9.71695252,  8.51415601], dtype='float32')
TEST_RAYLEIGH_RESULT3 = np.array([5.61532271,  8.69267476], dtype='float32')


# Mock some modules, so we don't need them for tests.

# sys.modules['pyresample'] = MagicMock()



class RelativeSpectralResponseTestData(object):

    """RSR test data"""

    def __init__(self):
        """Making a testdata set of relative spectral responses"""

        self.rsr = {}
        channel_names = ['ch12', 'ch13', 'ch10', 'ch11', 'ch16', 'ch14',
                         'ch15', 'ch1', 'ch2', 'ch3', 'ch4', 'ch5', 'ch6',
                         'ch7', 'ch8', 'ch9']
        wvl = [9.6372744012936646, 10.407492196078628, 7.3468642293967275,
               8.5926867614178715, 13.280724258676756, 11.239642285822033,
               12.380741429961382, 0.47063607733748003, 0.5099976405799187,
               0.63914891611559055, 0.85668832355426627, 1.6100814361999056,
               2.2568056299864101, 3.8853663735353847, 6.2428987228916233,
               6.9411756334211789]
        ch3_wvl = np.array([0.55518544, 0.56779468, 0.58099002, 0.59481323, 0.60931027,
                            0.62453163, 0.64053291, 0.65737575, 0.67512828, 0.69386619,
                            0.71367401])
        ch3_resp = np.array([2.61000005e-05, 1.07899999e-04, 3.26119992e-03,
                             2.90650606e-01, 9.02460396e-01, 9.60878074e-01,
                             9.97266889e-01, 9.94823873e-01, 7.18220174e-01,
                             8.31819978e-03, 9.34999989e-05])

        idx = 0
        for chname in channel_names:
            self.rsr[chname] = {'det-1': {}}
            self.rsr[chname]['det-1']['central_wavelength'] = wvl[idx]
            idx = idx + 1

        chname = 'ch3'
        self.rsr[chname]['det-1']['wavelength'] = ch3_wvl
        self.rsr[chname]['det-1']['response'] = ch3_resp


class TestRayleigh(unittest.TestCase):

    """Class for testing pyspectral.rayleigh"""

    def setUp(self):
        """Setup the test"""

        self.cwvl = 0.4440124
        self.rsr = RelativeSpectralResponseTestData()
        self._res1 = da.from_array(TEST_RAYLEIGH_RESULT1, chunks=2)
        self._res2 = da.from_array(TEST_RAYLEIGH_RESULT2, chunks=2)
        self._res3 = da.from_array(TEST_RAYLEIGH_RESULT3, chunks=2)

        # mymock:
        with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
            instance = mymock.return_value
            instance.rsr = RelativeSpectralResponseTestData().rsr
            instance.unit = '1e-6 m'
            instance.si_scale = 1e-6

            self.viirs_rayleigh = rayleigh.Rayleigh('NOAA-20', 'viirs', atmosphere='midlatitude summer')

    def test_get_effective_wavelength(self):
        """Test getting the effective wavelength"""

        # mymock:
        with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
            instance = mymock.return_value
            instance.rsr = RelativeSpectralResponseTestData().rsr

            this = rayleigh.Rayleigh('Himawari-8', 'ahi')
            with self.assertRaises(BandFrequencyOutOfRange):
                this.get_effective_wavelength(0.9)

            # Only ch3 (~0.63) testdata implemented yet...
            ewl = this.get_effective_wavelength(0.65)
            self.assertAlmostEqual(ewl, 0.6356167)

        # mymock:
        with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
            instance = mymock.side_effect = IOError(
                'Fake that there is no spectral response file...')

            this = rayleigh.Rayleigh('Himawari-8', 'ahi')
            ewl = this.get_effective_wavelength(0.7)
            self.assertEqual(ewl, 0.7)
            ewl = this.get_effective_wavelength(0.9)
            self.assertEqual(ewl, 0.9)
            ewl = this.get_effective_wavelength(0.455)
            self.assertEqual(ewl, 0.455)

    @patch('os.path.exists')
    @patch('pyspectral.utils.download_luts')
    def test_rayleigh_init(self, download_luts, exists):
        """Test creating the Rayleigh object"""

        download_luts.return_code = None
        exists.return_code = True

        # mymock:
        with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
            instance = mymock.return_value
            instance.rsr = RelativeSpectralResponseTestData().rsr

            with self.assertRaises(AttributeError):
                this = rayleigh.Rayleigh('Himawari-8', 'ahi', atmosphere='unknown')

            with self.assertRaises(AttributeError):
                this = rayleigh.Rayleigh('Himawari-8', 'ahi', aerosol_type='unknown')

            this = rayleigh.Rayleigh('Himawari-8', 'ahi', atmosphere='subarctic winter')
            self.assertTrue(os.path.basename(this.reflectance_lut_filename).endswith('subarctic_winter.h5'))
            self.assertTrue(this.sensor == 'ahi')

            this = rayleigh.Rayleigh('NOAA-19', 'avhrr/3', atmosphere='tropical')
            self.assertTrue(this.sensor == 'avhrr3')

    @patch('pyspectral.rayleigh.HAVE_DASK', False)
    @patch('os.path.exists')
    @patch('pyspectral.utils.download_luts')
    @patch('pyspectral.rayleigh.get_reflectance_lut')
    @patch('pyspectral.rsr_reader.RelativeSpectralResponse._get_rsr_data_version')
    @patch('pyspectral.rayleigh.Rayleigh.get_effective_wavelength')
    def test_get_reflectance(self, get_effective_wvl,
                             get_rsr_version, get_reflectance_lut, download_luts, exists):
        """Test getting the reflectance correction"""

        rayl = TEST_RAYLEIGH_LUT
        wvl_coord = TEST_RAYLEIGH_WVL_COORD
        azid_coord = TEST_RAYLEIGH_AZID_COORD
        sunz_sec_coord = TEST_RAYLEIGH_SUNZ_COORD
        satz_sec_coord = TEST_RAYLEIGH_SATZ_COORD

        get_reflectance_lut.return_value = (rayl, wvl_coord, azid_coord,
                                            satz_sec_coord, sunz_sec_coord)
        download_luts.return_code = None
        exists.return_code = True
        get_rsr_version.return_code = RSR_DATA_VERSION
        get_effective_wvl.return_value = self.cwvl

        sun_zenith = np.array([67., 32.])
        sat_zenith = np.array([45., 18.])
        azidiff = np.array([150., 110.])
        blueband = np.array([14., 5.])
        retv = self.viirs_rayleigh.get_reflectance(
            sun_zenith, sat_zenith, azidiff, 'M2', blueband)
        self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT1))

        sun_zenith = np.array([60., 20.])
        sat_zenith = np.array([49., 26.])
        azidiff = np.array([140., 130.])
        blueband = np.array([12., 8.])
        retv = self.viirs_rayleigh.get_reflectance(
            sun_zenith, sat_zenith, azidiff, 'M2', blueband)
        self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT2))

    @patch('os.path.exists')
    @patch('pyspectral.utils.download_luts')
    @patch('pyspectral.rayleigh.get_reflectance_lut')
    @patch('pyspectral.rsr_reader.RelativeSpectralResponse.'
           '_get_rsr_data_version')
    @patch('pyspectral.rayleigh.Rayleigh.get_effective_wavelength')
    def test_get_reflectance_dask(self, get_effective_wvl,
                                  get_rsr_version, get_reflectance_lut,
                                  download_luts, exists):
        """Test getting the reflectance correction with dask inputs"""
        rayl = da.from_array(TEST_RAYLEIGH_LUT, chunks=(10, 10, 10, 10))
        wvl_coord = da.from_array(TEST_RAYLEIGH_WVL_COORD,
                                  chunks=(100,)).persist()
        azid_coord = da.from_array(TEST_RAYLEIGH_AZID_COORD, chunks=(1000,))
        sunz_sec_coord = da.from_array(TEST_RAYLEIGH_SUNZ_COORD,
                                       chunks=(1000,))
        satz_sec_coord = da.from_array(TEST_RAYLEIGH_SATZ_COORD,
                                       chunks=(1000,))

        get_reflectance_lut.return_value = (rayl, wvl_coord, azid_coord,
                                            satz_sec_coord, sunz_sec_coord)
        download_luts.return_code = None
        exists.return_code = True
        get_rsr_version.return_code = RSR_DATA_VERSION
        get_effective_wvl.return_value = self.cwvl

        sun_zenith = da.from_array(np.array([67., 32.]), chunks=2)
        sat_zenith = da.from_array(np.array([45., 18.]), chunks=2)
        azidiff = da.from_array(np.array([150., 110.]), chunks=2)
        blueband = da.from_array(np.array([14., 5.]), chunks=2)
        retv = self.viirs_rayleigh.get_reflectance(sun_zenith, sat_zenith, azidiff, 'M2', blueband)
        self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT1))
        self.assertIsInstance(retv, da.Array)

        sun_zenith = da.from_array(np.array([60., 20.]), chunks=2)
        sat_zenith = da.from_array(np.array([49., 26.]), chunks=2)
        azidiff = da.from_array(np.array([140., 130.]), chunks=2)
        blueband = da.from_array(np.array([12., 8.]), chunks=2)
        retv = self.viirs_rayleigh.get_reflectance(sun_zenith, sat_zenith, azidiff, 'M2', blueband)
        self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT2))
        self.assertIsInstance(retv, da.Array)

    @patch('pyspectral.rayleigh.HAVE_DASK', False)
    @patch('os.path.exists')
    @patch('pyspectral.utils.download_luts')
    @patch('pyspectral.rayleigh.get_reflectance_lut')
    def test_get_reflectance_no_rsr(self, get_reflectance_lut, download_luts, exists):
        """Test getting the reflectance correction, simulating that we have no RSR data"""

        rayl = TEST_RAYLEIGH_LUT
        wvl_coord = TEST_RAYLEIGH_WVL_COORD
        azid_coord = TEST_RAYLEIGH_AZID_COORD
        sunz_sec_coord = TEST_RAYLEIGH_SUNZ_COORD
        satz_sec_coord = TEST_RAYLEIGH_SATZ_COORD

        get_reflectance_lut.return_value = (rayl, wvl_coord, azid_coord,
                                            satz_sec_coord, sunz_sec_coord)
        download_luts.return_code = None
        exists.return_code = True

        with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
            instance = mymock.return_value
            mymock.side_effect = IOError("No rsr data in pyspectral for this platform and sensor")
            instance.rsr = None
            instance.unit = '1e-6 m'
            instance.si_scale = 1e-6
            sun_zenith = np.array([50., 10.])
            sat_zenith = np.array([39., 16.])
            azidiff = np.array([170., 110.])
            blueband = np.array([29., 12.])
            ufo = rayleigh.Rayleigh('UFO', 'unknown')

            retv = ufo.get_reflectance(sun_zenith, sat_zenith, azidiff, 0.441, blueband)
            self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT3))

    def tearDown(self):
        """Clean up"""
        pass


def suite():
    """The test suite for test_rayleigh.
    """
    loader = unittest.TestLoader()
    mysuite = unittest.TestSuite()
    mysuite.addTest(loader.loadTestsFromTestCase(TestRayleigh))

    return mysuite


1		#!/usr/bin/env python
2		# -- coding: utf-8 --
3
4		# Copyright (c) 2016, 2017, 2018 Adam.Dybbroe
5
6		# Author(s):
7
8		# Adam.Dybbroe <[email protected]>
9
10		# This program is free software: you can redistribute it and/or modify
11		# it under the terms of the GNU General Public License as published by
12		# the Free Software Foundation, either version 3 of the License, or
13		# (at your option) any later version.
14
15		# This program is distributed in the hope that it will be useful,
16		# but WITHOUT ANY WARRANTY; without even the implied warranty of
17		# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18		# GNU General Public License for more details.
19
20		# You should have received a copy of the GNU General Public License
21		# along with this program. If not, see <http://www.gnu.org/licenses/>.
22
23		"""Unittest for the rayleigh correction utilities
24		"""
25
26		import os
27		import sys
28		from mock import patch
29		import numpy as np
30		import dask.array as da
31		from pyspectral import rayleigh
32		from pyspectral.rayleigh import BandFrequencyOutOfRange
33		from pyspectral.tests.data import (
34		TEST_RAYLEIGH_LUT,
35		TEST_RAYLEIGH_AZID_COORD,
36		TEST_RAYLEIGH_SUNZ_COORD,
37		TEST_RAYLEIGH_SATZ_COORD,
38		TEST_RAYLEIGH_WVL_COORD)
39		from pyspectral.utils import RSR_DATA_VERSION
40
41		if sys.version_info < (2, 7):
42		import unittest2 as unittest
43		else:
44		import unittest
45
46
47		TEST_RAYLEIGH_RESULT1 = np.array([10.40727436, 8.69775471], dtype='float32')
48		TEST_RAYLEIGH_RESULT2 = np.array([9.71695252, 8.51415601], dtype='float32')
49		TEST_RAYLEIGH_RESULT3 = np.array([5.61532271, 8.69267476], dtype='float32')
50
51
52		# Mock some modules, so we don't need them for tests.
53
54		# sys.modules['pyresample'] = MagicMock()
55
56	View Code Duplication
		0 ignored issues – show Duplication introduced 2018-03-22 18:53 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
57		class RelativeSpectralResponseTestData(object):
58
59		"""RSR test data"""
60
61		def __init__(self):
62		"""Making a testdata set of relative spectral responses"""
63
64		self.rsr = {}
65		channel_names = ['ch12', 'ch13', 'ch10', 'ch11', 'ch16', 'ch14',
66		'ch15', 'ch1', 'ch2', 'ch3', 'ch4', 'ch5', 'ch6',
67		'ch7', 'ch8', 'ch9']
68		wvl = [9.6372744012936646, 10.407492196078628, 7.3468642293967275,
69		8.5926867614178715, 13.280724258676756, 11.239642285822033,
70		12.380741429961382, 0.47063607733748003, 0.5099976405799187,
71		0.63914891611559055, 0.85668832355426627, 1.6100814361999056,
72		2.2568056299864101, 3.8853663735353847, 6.2428987228916233,
73		6.9411756334211789]
74		ch3_wvl = np.array([0.55518544, 0.56779468, 0.58099002, 0.59481323, 0.60931027,
75		0.62453163, 0.64053291, 0.65737575, 0.67512828, 0.69386619,
76		0.71367401])
77		ch3_resp = np.array([2.61000005e-05, 1.07899999e-04, 3.26119992e-03,
78		2.90650606e-01, 9.02460396e-01, 9.60878074e-01,
79		9.97266889e-01, 9.94823873e-01, 7.18220174e-01,
80		8.31819978e-03, 9.34999989e-05])
81
82		idx = 0
83		for chname in channel_names:
84		self.rsr[chname] = {'det-1': {}}
85		self.rsr[chname]['det-1']['central_wavelength'] = wvl[idx]
86		idx = idx + 1
87
88		chname = 'ch3'
89		self.rsr[chname]['det-1']['wavelength'] = ch3_wvl
90		self.rsr[chname]['det-1']['response'] = ch3_resp
91
92
93		class TestRayleigh(unittest.TestCase):
94
95		"""Class for testing pyspectral.rayleigh"""
96
97		def setUp(self):
98		"""Setup the test"""
99
100		self.cwvl = 0.4440124
101		self.rsr = RelativeSpectralResponseTestData()
102		self._res1 = da.from_array(TEST_RAYLEIGH_RESULT1, chunks=2)
103		self._res2 = da.from_array(TEST_RAYLEIGH_RESULT2, chunks=2)
104		self._res3 = da.from_array(TEST_RAYLEIGH_RESULT3, chunks=2)
105
106		# mymock:
107		with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
108		instance = mymock.return_value
109		instance.rsr = RelativeSpectralResponseTestData().rsr
110		instance.unit = '1e-6 m'
111		instance.si_scale = 1e-6
112
113		self.viirs_rayleigh = rayleigh.Rayleigh('NOAA-20', 'viirs', atmosphere='midlatitude summer')
114
115		def test_get_effective_wavelength(self):
116		"""Test getting the effective wavelength"""
117
118		# mymock:
119		with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
120		instance = mymock.return_value
121		instance.rsr = RelativeSpectralResponseTestData().rsr
122
123		this = rayleigh.Rayleigh('Himawari-8', 'ahi')
124		with self.assertRaises(BandFrequencyOutOfRange):
125		this.get_effective_wavelength(0.9)
126
127		# Only ch3 (~0.63) testdata implemented yet...
128		ewl = this.get_effective_wavelength(0.65)
129		self.assertAlmostEqual(ewl, 0.6356167)
130
131		# mymock:
132		with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
133		instance = mymock.side_effect = IOError(
134		'Fake that there is no spectral response file...')
135
136		this = rayleigh.Rayleigh('Himawari-8', 'ahi')
137		ewl = this.get_effective_wavelength(0.7)
138		self.assertEqual(ewl, 0.7)
139		ewl = this.get_effective_wavelength(0.9)
140		self.assertEqual(ewl, 0.9)
141		ewl = this.get_effective_wavelength(0.455)
142		self.assertEqual(ewl, 0.455)
143
144		@patch('os.path.exists')
145		@patch('pyspectral.utils.download_luts')
146		def test_rayleigh_init(self, download_luts, exists):
147		"""Test creating the Rayleigh object"""
148
149		download_luts.return_code = None
150		exists.return_code = True
151
152		# mymock:
153		with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
154		instance = mymock.return_value
155		instance.rsr = RelativeSpectralResponseTestData().rsr
156
157		with self.assertRaises(AttributeError):
158		this = rayleigh.Rayleigh('Himawari-8', 'ahi', atmosphere='unknown')
159
160		with self.assertRaises(AttributeError):
161		this = rayleigh.Rayleigh('Himawari-8', 'ahi', aerosol_type='unknown')
162
163		this = rayleigh.Rayleigh('Himawari-8', 'ahi', atmosphere='subarctic winter')
164		self.assertTrue(os.path.basename(this.reflectance_lut_filename).endswith('subarctic_winter.h5'))
165		self.assertTrue(this.sensor == 'ahi')
166
167		this = rayleigh.Rayleigh('NOAA-19', 'avhrr/3', atmosphere='tropical')
168		self.assertTrue(this.sensor == 'avhrr3')
169
170		@patch('pyspectral.rayleigh.HAVE_DASK', False)
171		@patch('os.path.exists')
172		@patch('pyspectral.utils.download_luts')
173		@patch('pyspectral.rayleigh.get_reflectance_lut')
174		@patch('pyspectral.rsr_reader.RelativeSpectralResponse._get_rsr_data_version')
175		@patch('pyspectral.rayleigh.Rayleigh.get_effective_wavelength')
176		def test_get_reflectance(self, get_effective_wvl,
177		get_rsr_version, get_reflectance_lut, download_luts, exists):
178		"""Test getting the reflectance correction"""
179
180		rayl = TEST_RAYLEIGH_LUT
181		wvl_coord = TEST_RAYLEIGH_WVL_COORD
182		azid_coord = TEST_RAYLEIGH_AZID_COORD
183		sunz_sec_coord = TEST_RAYLEIGH_SUNZ_COORD
184		satz_sec_coord = TEST_RAYLEIGH_SATZ_COORD
185
186		get_reflectance_lut.return_value = (rayl, wvl_coord, azid_coord,
187		satz_sec_coord, sunz_sec_coord)
188		download_luts.return_code = None
189		exists.return_code = True
190		get_rsr_version.return_code = RSR_DATA_VERSION
191		get_effective_wvl.return_value = self.cwvl
192
193		sun_zenith = np.array([67., 32.])
194		sat_zenith = np.array([45., 18.])
195		azidiff = np.array([150., 110.])
196		blueband = np.array([14., 5.])
197		retv = self.viirs_rayleigh.get_reflectance(
198		sun_zenith, sat_zenith, azidiff, 'M2', blueband)
199		self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT1))
200
201		sun_zenith = np.array([60., 20.])
202		sat_zenith = np.array([49., 26.])
203		azidiff = np.array([140., 130.])
204		blueband = np.array([12., 8.])
205		retv = self.viirs_rayleigh.get_reflectance(
206		sun_zenith, sat_zenith, azidiff, 'M2', blueband)
207		self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT2))
208
209		@patch('os.path.exists')
210		@patch('pyspectral.utils.download_luts')
211		@patch('pyspectral.rayleigh.get_reflectance_lut')
212		@patch('pyspectral.rsr_reader.RelativeSpectralResponse.'
213		'_get_rsr_data_version')
214		@patch('pyspectral.rayleigh.Rayleigh.get_effective_wavelength')
215		def test_get_reflectance_dask(self, get_effective_wvl,
216		get_rsr_version, get_reflectance_lut,
217		download_luts, exists):
218		"""Test getting the reflectance correction with dask inputs"""
219		rayl = da.from_array(TEST_RAYLEIGH_LUT, chunks=(10, 10, 10, 10))
220		wvl_coord = da.from_array(TEST_RAYLEIGH_WVL_COORD,
221		chunks=(100,)).persist()
222		azid_coord = da.from_array(TEST_RAYLEIGH_AZID_COORD, chunks=(1000,))
223		sunz_sec_coord = da.from_array(TEST_RAYLEIGH_SUNZ_COORD,
224		chunks=(1000,))
225		satz_sec_coord = da.from_array(TEST_RAYLEIGH_SATZ_COORD,
226		chunks=(1000,))
227
228		get_reflectance_lut.return_value = (rayl, wvl_coord, azid_coord,
229		satz_sec_coord, sunz_sec_coord)
230		download_luts.return_code = None
231		exists.return_code = True
232		get_rsr_version.return_code = RSR_DATA_VERSION
233		get_effective_wvl.return_value = self.cwvl
234
235		sun_zenith = da.from_array(np.array([67., 32.]), chunks=2)
236		sat_zenith = da.from_array(np.array([45., 18.]), chunks=2)
237		azidiff = da.from_array(np.array([150., 110.]), chunks=2)
238		blueband = da.from_array(np.array([14., 5.]), chunks=2)
239		retv = self.viirs_rayleigh.get_reflectance(sun_zenith, sat_zenith, azidiff, 'M2', blueband)
240		self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT1))
241		self.assertIsInstance(retv, da.Array)
242
243		sun_zenith = da.from_array(np.array([60., 20.]), chunks=2)
244		sat_zenith = da.from_array(np.array([49., 26.]), chunks=2)
245		azidiff = da.from_array(np.array([140., 130.]), chunks=2)
246		blueband = da.from_array(np.array([12., 8.]), chunks=2)
247		retv = self.viirs_rayleigh.get_reflectance(sun_zenith, sat_zenith, azidiff, 'M2', blueband)
248		self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT2))
249		self.assertIsInstance(retv, da.Array)
250
251		@patch('pyspectral.rayleigh.HAVE_DASK', False)
252		@patch('os.path.exists')
253		@patch('pyspectral.utils.download_luts')
254		@patch('pyspectral.rayleigh.get_reflectance_lut')
255		def test_get_reflectance_no_rsr(self, get_reflectance_lut, download_luts, exists):
256		"""Test getting the reflectance correction, simulating that we have no RSR data"""
257
258		rayl = TEST_RAYLEIGH_LUT
259		wvl_coord = TEST_RAYLEIGH_WVL_COORD
260		azid_coord = TEST_RAYLEIGH_AZID_COORD
261		sunz_sec_coord = TEST_RAYLEIGH_SUNZ_COORD
262		satz_sec_coord = TEST_RAYLEIGH_SATZ_COORD
263
264		get_reflectance_lut.return_value = (rayl, wvl_coord, azid_coord,
265		satz_sec_coord, sunz_sec_coord)
266		download_luts.return_code = None
267		exists.return_code = True
268
269		with patch('pyspectral.rayleigh.RelativeSpectralResponse') as mymock:
270		instance = mymock.return_value
271		mymock.side_effect = IOError("No rsr data in pyspectral for this platform and sensor")
272		instance.rsr = None
273		instance.unit = '1e-6 m'
274		instance.si_scale = 1e-6
275		sun_zenith = np.array([50., 10.])
276		sat_zenith = np.array([39., 16.])
277		azidiff = np.array([170., 110.])
278		blueband = np.array([29., 12.])
279		ufo = rayleigh.Rayleigh('UFO', 'unknown')
280
281		retv = ufo.get_reflectance(sun_zenith, sat_zenith, azidiff, 0.441, blueband)
282		self.assertTrue(np.allclose(retv, TEST_RAYLEIGH_RESULT3))
283
284		def tearDown(self):
285		"""Clean up"""
286		pass
287
288
289		def suite():
290		"""The test suite for test_rayleigh.
291		"""
292		loader = unittest.TestLoader()
293		mysuite = unittest.TestSuite()
294		mysuite.addTest(loader.loadTestsFromTestCase(TestRayleigh))
295
296		return mysuite
297

pytroll / pyspectral

Pull Request — develop (#33)

TestRayleigh.test_get_reflectance_no_rsr() B

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