source: trunk/test/test_scantable.py @ 2802

Last change on this file since 2802 was 2802, checked in by Malte Marquarding, 11 years ago

reverted previous jenkins test changeset
File size: 8.6 KB
Line 
1import sys
2import os
3import shutil
4import datetime
5from nose.tools import *
6import asap
7from asap import scantable, selector, mask_not
8from asap.logging import asaplog
9# no need for log messages
10asaplog.disable()
11
12def tempdir_setup():
13    os.makedirs("test_temp")
14
15def tempdir_teardown():
16    shutil.rmtree("test_temp", True)
17
18class TestScantable(object):
19    def setup(self):
20        pth = os.path.dirname(__file__)
21        s = scantable(os.path.join(pth, "data", "MOPS.rpf"), average=True)
22        sel = selector()
23        # make sure this order is always correct - in can be random
24        sel.set_order(["SCANNO", "POLNO"])
25        s.set_selection(sel)
26        self.st = s.copy()
27        restfreqs = [86.243]     # 13CO-1/0, SiO the two IF
28        self.st.set_restfreqs(restfreqs,"GHz")
29
30    def test_init(self):
31        fname = os.path.join(os.path.dirname(__file__), "data", "MOPS.rpf")
32        st = scantable(fname, average=False)
33        assert_equal(st.ncycle(), 32)
34        st = scantable(fname, average=True)
35        assert_equal(st.ncycle(), 2)
36        st = scantable(fname, unit="Jy")
37        assert_equal(st.get_fluxunit(), "Jy")
38        st = scantable(fname, unit="K")
39        assert_equal(st.get_fluxunit(), "K")
40        assert_raises(RuntimeError, scantable, fname, unit="junk")
41        st = scantable([fname,fname], average=False)
42        assert_equal(st.nscan(), 4)
43
44    def test_copy(self):
45        st = self.st.copy()
46        assert_not_equal(id(st), id(self.st))
47
48    def test_drop_scan(self):
49        st = self.st.drop_scan([1])
50        assert_equal(st.nscan(), 1)
51
52    def test_get_scan(self):
53        st = self.st.get_scan([1])
54        assert_equal(st.nscan(), 1)
55        st = self.st.get_scan("Orion_SiO_R")
56        assert_equal(st.get_sourcename()[-1], "Orion_SiO_R")
57        assert_equal(st.nscan(), 1)
58
59    def test_get_spectrum(self):
60        spec = self.st.get_spectrum(0)
61        assert_almost_equal(max(spec), 215.279830933)
62
63    def test_get_mask(self):
64        spec = self.st.get_mask(0)
65        assert_equal(len(spec), 4096)
66
67    def test_set_spectrum(self):
68        spec = [ 1.0 for i in range(self.st.nchan()) ]
69        self.st.set_spectrum(spec, 0)
70        spec1 = self.st.get_spectrum(0)
71        assert_almost_equal(max(spec1), 1.0)
72
73    def test_selection(self):
74        sel = selector()
75        sel.set_polarisations("YY")
76        self.st.set_selection(sel)
77        assert_equal(self.st.getpolnos(), [1])
78        sel1 = self.st.get_selection()
79        assert_equal(sel1.get_pols(), [1])
80        self.st.set_selection(pols="XX")
81        assert_equal(self.st.getpolnos(), [0])
82
83
84    def stats(self, key, value, mask=False):
85        msk = None
86        if mask:
87            msk = self.st.create_mask([0,100], [3900,4096])
88        sval = self.st.stats(stat=key, mask=msk)
89        assert_almost_equal(sval[0], value)
90
91    def test_masked_stats(self):
92        stats = { 'min': 113.767166138,
93                  'max':128.21571350, 'sumsq':4180516.75,
94                  'sum':35216.87890625, 'mean':118.5753479,
95                  'var':15.75608253, 'stddev':3.9693932533,
96                  'avdev':3.395271778, 'rms':118.6415405,
97                  'median':117.5024261}
98        for k,v in stats.items():
99            yield self.stats, k, v, True
100
101    def test_stats(self):
102        stats = { 'min': 113.767166138,
103                  'max':215.279830933, 'sumsq':128759200.0,
104                  'sum':720262.375, 'mean':175.845306396,
105                  'var':513.95324707, 'stddev':22.6705360413,
106                  'avdev':16.3966751099, 'rms':177.300170898,
107                  'median':182.891845703}
108        for k,v in stats.items():
109            yield self.stats, k, v
110
111    def test_get_column_names(self):
112        cnames = ['SCANNO', 'CYCLENO', 'BEAMNO', 'IFNO',
113                  'POLNO', 'FREQ_ID', 'MOLECULE_ID', 'REFBEAMNO', 'FLAGROW',
114                  'TIME', 'INTERVAL', 'SRCNAME', 'SRCTYPE',
115                  'FIELDNAME', 'SPECTRA', 'FLAGTRA', 'TSYS',
116                  'DIRECTION', 'AZIMUTH', 'ELEVATION',
117                  'OPACITY', 'TCAL_ID', 'FIT_ID',
118                  'FOCUS_ID', 'WEATHER_ID', 'SRCVELOCITY',
119                  'SRCPROPERMOTION', 'SRCDIRECTION',
120                  'SCANRATE']
121        assert_equal(self.st.get_column_names(), cnames)
122
123    def test_get_tsys(self):
124        assert_almost_equal(self.st.get_tsys()[0], 175.830429077)
125
126    def test_set_tsys(self):
127        s = self.st.copy()
128        newval = 100.0
129        s.set_tsys(newval, 0)
130        assert_almost_equal(s.get_tsys()[0], newval)
131        s2 = self.st.copy()
132        s2.set_tsys(newval)
133        out = s2.get_tsys()
134        for i in xrange(len(out)):
135            assert_almost_equal(out[i], newval)
136
137    def test_get_time(self):
138        assert_equal(self.st.get_time(0), '2008/03/12/09:32:50')
139        dt = datetime.datetime(2008,3,12,9,32,50)
140        assert_equal(self.st.get_time(0, True), dt)
141
142    def test_get_inttime(self):
143        assert_almost_equal(self.st.get_inttime()[0], 30.720016479)
144
145    def test_get_sourcename(self):
146        assert_equal(self.st.get_sourcename(0), 'Orion_SiO_R')
147        assert_equal(self.st.get_sourcename(),
148                         ['Orion_SiO_R', 'Orion_SiO_R',
149                          'Orion_SiO', 'Orion_SiO'])
150
151    def test_get_azimuth(self):
152        assert_almost_equal(self.st.get_azimuth()[0], 5.628767013)
153
154    def test_get_elevation(self):
155        assert_almost_equal(self.st.get_elevation()[0], 1.01711678504)
156
157    def test_get_parangle(self):
158        assert_almost_equal(self.st.get_parangle()[0], 2.5921990871)
159
160    def test_get_direction(self):
161        assert_equal(self.st.get_direction()[0], 'J2000 05:35:14.5 -04.52.29.5')
162
163    def test_get_directionval(self):
164        dv = self.st.get_directionval()[0]
165        assert_almost_equal(dv[0], 1.4627692699)
166        assert_almost_equal(dv[1], -0.0850824415)
167
168    def test_unit(self):
169        self.st.set_unit('')
170        self.st.set_unit('GHz')
171        self.st.set_unit('km/s')
172        assert_raises(RuntimeError, self.st.set_unit, 'junk')
173        assert_equals(self.st.get_unit(), 'km/s')
174
175    def test_average_pol(self):
176        ap = self.st.average_pol()
177        assert_equal(ap.npol(), 1)
178
179    def test_drop_scan(self):
180        s0 = self.st.drop_scan(1)
181        assert_equal(s0.getscannos(), [0])
182        s1 = self.st.drop_scan([0])
183        assert_equal(s1.getscannos(), [1])
184
185    def test_flag(self):
186        q = self.st.auto_quotient()
187        q.set_unit('km/s')
188        q0 = q.copy()
189        q1 = q.copy()
190        msk = q0.create_mask([-10,20])
191        q0.flag(mask=mask_not(msk))
192        q1.flag(mask=msk)
193        assert_almost_equal(q0.stats(stat='max')[0], 95.62171936)
194        assert_almost_equal(q1.stats(stat='max')[0], 2.66563416)
195
196    @with_setup(tempdir_setup, tempdir_teardown)
197    def test_save(self):
198        fname = os.path.join("test_temp", 'scantable_test.%s')
199        formats = [(fname % 'sdfits', 'SDFITS', True),
200                   (fname % 'ms', 'MS2', True),
201                   (fname % 'class.fits', 'CLASS', False),
202                   (fname % 'fits', 'FITS', False),
203                   (fname % 'txt', 'ASCII', False),
204                   ]
205        for format in formats:
206            yield self.save, format
207
208    def save(self, args):
209        fname = args[0]
210        self.st.save(fname, args[1], True)
211        # do some verification args[2] == True
212        if args[-1]:
213            s = scantable(fname)
214            ds = self.st - s
215            assert_equals(self.st.getpolnos(), s.getpolnos())
216            assert_equals(self.st.getscannos(), s.getscannos())
217            assert_equals(self.st.getifnos(), s.getifnos())
218            assert_equals(self.st.getbeamnos(), s.getbeamnos())
219            # see if the residual spectra are ~ 0.0
220            for spec in ds:
221                assert_almost_equals(sum(spec)/len(spec), 0.0, 5)
222
223    def test_auto_poly_baseline(self):
224        q = self.st.auto_quotient()
225        b = q.auto_poly_baseline(insitu=False)
226        res_rms = (q-b).stats('rms')
227        assert_almost_equals(res_rms[0], 0.38370, 5)
228        assert_almost_equals(res_rms[1], 0.38780, 5)       
229       
230
231    def test_poly_baseline(self):
232        q = self.st.auto_quotient()
233        msk = q.create_mask([0.0, 1471.0], [1745.0, 4095.0])
234        b = q.poly_baseline(order=0, mask=msk,insitu=False)
235        res_rms = (q-b).stats('rms')
236        assert_almost_equals(res_rms[0], 0.38346, 5)
237        assert_almost_equals(res_rms[1], 0.38780, 5)       
238
239
240    def test_reshape(self):
241        cp = self.st.copy()
242        n = cp.nchan()
243        rs = cp.reshape(10,-10,False)
244        assert_equals(n-20, rs.nchan())
245        assert_equals(cp.nchan(), n)
246        rs = cp.reshape(10,n-11,False)
247        assert_equals(n-20, rs.nchan())
248        cp.reshape(10,-10,True)
249        assert_equals(n-20, cp.nchan())
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