source: trunk/test/test_scantable.py @ 2801

Last change on this file since 2801 was 2801, checked in by Malte Marquarding, 11 years ago

A failed test to check jenkins email output. Remove after
File size: 8.8 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_jenkins_email(self):
45        raise RuntimeError("Just check that the email has the log attached")
46
47    def test_copy(self):
48        st = self.st.copy()
49        assert_not_equal(id(st), id(self.st))
50
51    def test_drop_scan(self):
52        st = self.st.drop_scan([1])
53        assert_equal(st.nscan(), 1)
54
55    def test_get_scan(self):
56        st = self.st.get_scan([1])
57        assert_equal(st.nscan(), 1)
58        st = self.st.get_scan("Orion_SiO_R")
59        assert_equal(st.get_sourcename()[-1], "Orion_SiO_R")
60        assert_equal(st.nscan(), 1)
61
62    def test_get_spectrum(self):
63        spec = self.st.get_spectrum(0)
64        assert_almost_equal(max(spec), 215.279830933)
65
66    def test_get_mask(self):
67        spec = self.st.get_mask(0)
68        assert_equal(len(spec), 4096)
69
70    def test_set_spectrum(self):
71        spec = [ 1.0 for i in range(self.st.nchan()) ]
72        self.st.set_spectrum(spec, 0)
73        spec1 = self.st.get_spectrum(0)
74        assert_almost_equal(max(spec1), 1.0)
75
76    def test_selection(self):
77        sel = selector()
78        sel.set_polarisations("YY")
79        self.st.set_selection(sel)
80        assert_equal(self.st.getpolnos(), [1])
81        sel1 = self.st.get_selection()
82        assert_equal(sel1.get_pols(), [1])
83        self.st.set_selection(pols="XX")
84        assert_equal(self.st.getpolnos(), [0])
85
86
87    def stats(self, key, value, mask=False):
88        msk = None
89        if mask:
90            msk = self.st.create_mask([0,100], [3900,4096])
91        sval = self.st.stats(stat=key, mask=msk)
92        assert_almost_equal(sval[0], value)
93
94    def test_masked_stats(self):
95        stats = { 'min': 113.767166138,
96                  'max':128.21571350, 'sumsq':4180516.75,
97                  'sum':35216.87890625, 'mean':118.5753479,
98                  'var':15.75608253, 'stddev':3.9693932533,
99                  'avdev':3.395271778, 'rms':118.6415405,
100                  'median':117.5024261}
101        for k,v in stats.items():
102            yield self.stats, k, v, True
103
104    def test_stats(self):
105        stats = { 'min': 113.767166138,
106                  'max':215.279830933, 'sumsq':128759200.0,
107                  'sum':720262.375, 'mean':175.845306396,
108                  'var':513.95324707, 'stddev':22.6705360413,
109                  'avdev':16.3966751099, 'rms':177.300170898,
110                  'median':182.891845703}
111        for k,v in stats.items():
112            yield self.stats, k, v
113
114    def test_get_column_names(self):
115        cnames = ['SCANNO', 'CYCLENO', 'BEAMNO', 'IFNO',
116                  'POLNO', 'FREQ_ID', 'MOLECULE_ID', 'REFBEAMNO', 'FLAGROW',
117                  'TIME', 'INTERVAL', 'SRCNAME', 'SRCTYPE',
118                  'FIELDNAME', 'SPECTRA', 'FLAGTRA', 'TSYS',
119                  'DIRECTION', 'AZIMUTH', 'ELEVATION',
120                  'OPACITY', 'TCAL_ID', 'FIT_ID',
121                  'FOCUS_ID', 'WEATHER_ID', 'SRCVELOCITY',
122                  'SRCPROPERMOTION', 'SRCDIRECTION',
123                  'SCANRATE']
124        assert_equal(self.st.get_column_names(), cnames)
125
126    def test_get_tsys(self):
127        assert_almost_equal(self.st.get_tsys()[0], 175.830429077)
128
129    def test_set_tsys(self):
130        s = self.st.copy()
131        newval = 100.0
132        s.set_tsys(newval, 0)
133        assert_almost_equal(s.get_tsys()[0], newval)
134        s2 = self.st.copy()
135        s2.set_tsys(newval)
136        out = s2.get_tsys()
137        for i in xrange(len(out)):
138            assert_almost_equal(out[i], newval)
139
140    def test_get_time(self):
141        assert_equal(self.st.get_time(0), '2008/03/12/09:32:50')
142        dt = datetime.datetime(2008,3,12,9,32,50)
143        assert_equal(self.st.get_time(0, True), dt)
144
145    def test_get_inttime(self):
146        assert_almost_equal(self.st.get_inttime()[0], 30.720016479)
147
148    def test_get_sourcename(self):
149        assert_equal(self.st.get_sourcename(0), 'Orion_SiO_R')
150        assert_equal(self.st.get_sourcename(),
151                         ['Orion_SiO_R', 'Orion_SiO_R',
152                          'Orion_SiO', 'Orion_SiO'])
153
154    def test_get_azimuth(self):
155        assert_almost_equal(self.st.get_azimuth()[0], 5.628767013)
156
157    def test_get_elevation(self):
158        assert_almost_equal(self.st.get_elevation()[0], 1.01711678504)
159
160    def test_get_parangle(self):
161        assert_almost_equal(self.st.get_parangle()[0], 2.5921990871)
162
163    def test_get_direction(self):
164        assert_equal(self.st.get_direction()[0], 'J2000 05:35:14.5 -04.52.29.5')
165
166    def test_get_directionval(self):
167        dv = self.st.get_directionval()[0]
168        assert_almost_equal(dv[0], 1.4627692699)
169        assert_almost_equal(dv[1], -0.0850824415)
170
171    def test_unit(self):
172        self.st.set_unit('')
173        self.st.set_unit('GHz')
174        self.st.set_unit('km/s')
175        assert_raises(RuntimeError, self.st.set_unit, 'junk')
176        assert_equals(self.st.get_unit(), 'km/s')
177
178    def test_average_pol(self):
179        ap = self.st.average_pol()
180        assert_equal(ap.npol(), 1)
181
182    def test_drop_scan(self):
183        s0 = self.st.drop_scan(1)
184        assert_equal(s0.getscannos(), [0])
185        s1 = self.st.drop_scan([0])
186        assert_equal(s1.getscannos(), [1])
187
188    def test_flag(self):
189        q = self.st.auto_quotient()
190        q.set_unit('km/s')
191        q0 = q.copy()
192        q1 = q.copy()
193        msk = q0.create_mask([-10,20])
194        q0.flag(mask=mask_not(msk))
195        q1.flag(mask=msk)
196        assert_almost_equal(q0.stats(stat='max')[0], 95.62171936)
197        assert_almost_equal(q1.stats(stat='max')[0], 2.66563416)
198
199    @with_setup(tempdir_setup, tempdir_teardown)
200    def test_save(self):
201        fname = os.path.join("test_temp", 'scantable_test.%s')
202        formats = [(fname % 'sdfits', 'SDFITS', True),
203                   (fname % 'ms', 'MS2', True),
204                   (fname % 'class.fits', 'CLASS', False),
205                   (fname % 'fits', 'FITS', False),
206                   (fname % 'txt', 'ASCII', False),
207                   ]
208        for format in formats:
209            yield self.save, format
210
211    def save(self, args):
212        fname = args[0]
213        self.st.save(fname, args[1], True)
214        # do some verification args[2] == True
215        if args[-1]:
216            s = scantable(fname)
217            ds = self.st - s
218            assert_equals(self.st.getpolnos(), s.getpolnos())
219            assert_equals(self.st.getscannos(), s.getscannos())
220            assert_equals(self.st.getifnos(), s.getifnos())
221            assert_equals(self.st.getbeamnos(), s.getbeamnos())
222            # see if the residual spectra are ~ 0.0
223            for spec in ds:
224                assert_almost_equals(sum(spec)/len(spec), 0.0, 5)
225
226    def test_auto_poly_baseline(self):
227        q = self.st.auto_quotient()
228        b = q.auto_poly_baseline(insitu=False)
229        res_rms = (q-b).stats('rms')
230        assert_almost_equals(res_rms[0], 0.38370, 5)
231        assert_almost_equals(res_rms[1], 0.38780, 5)       
232       
233
234    def test_poly_baseline(self):
235        q = self.st.auto_quotient()
236        msk = q.create_mask([0.0, 1471.0], [1745.0, 4095.0])
237        b = q.poly_baseline(order=0, mask=msk,insitu=False)
238        res_rms = (q-b).stats('rms')
239        assert_almost_equals(res_rms[0], 0.38346, 5)
240        assert_almost_equals(res_rms[1], 0.38780, 5)       
241
242
243    def test_reshape(self):
244        cp = self.st.copy()
245        n = cp.nchan()
246        rs = cp.reshape(10,-10,False)
247        assert_equals(n-20, rs.nchan())
248        assert_equals(cp.nchan(), n)
249        rs = cp.reshape(10,n-11,False)
250        assert_equals(n-20, rs.nchan())
251        cp.reshape(10,-10,True)
252        assert_equals(n-20, cp.nchan())
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