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from builtins import zip 

import matplotlib 

matplotlib.use("Agg") 

import numpy as np 

import unittest 

import lsst.sims.maf.metrics as metrics 

import lsst.utils.tests 

 

 

class TestTechnicalMetrics(unittest.TestCase): 

 

def testNChangesMetric(self): 

""" 

Test the NChanges metric. 

""" 

filters = np.array(['u', 'u', 'g', 'g', 'r']) 

visitTimes = np.arange(0, filters.size, 1) 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.NChangesMetric() 

result = metric.run(data) 

self.assertEqual(result, 2) 

filters = np.array(['u', 'g', 'u', 'g', 'r']) 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.NChangesMetric() 

result = metric.run(data) 

self.assertEqual(result, 4) 

 

def testMinTimeBetweenStatesMetric(self): 

""" 

Test the minTimeBetweenStates metric. 

""" 

filters = np.array(['u', 'g', 'g', 'r']) 

visitTimes = np.array([0, 5, 6, 7]) # days 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.MinTimeBetweenStatesMetric() 

result = metric.run(data) # minutes 

self.assertEqual(result, 2*24.0*60.0) 

data['filter'] = np.array(['u', 'u', 'u', 'u']) 

result = metric.run(data) 

self.assertEqual(result, metric.badval) 

 

def testNStateChangesFasterThanMetric(self): 

""" 

Test the NStateChangesFasterThan metric. 

""" 

filters = np.array(['u', 'g', 'g', 'r']) 

visitTimes = np.array([0, 5, 6, 7]) # days 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.NStateChangesFasterThanMetric(cutoff=3*24*60) 

result = metric.run(data) # minutes 

self.assertEqual(result, 1) 

 

def testMaxStateChangesWithinMetric(self): 

""" 

Test the MaxStateChangesWithin metric. 

""" 

filters = np.array(['u', 'g', 'r', 'u', 'g', 'r']) 

visitTimes = np.array([0, 1, 1, 4, 6, 7]) # days 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.MaxStateChangesWithinMetric(timespan=1*24*60) 

result = metric.run(data) # minutes 

self.assertEqual(result, 2) 

filters = np.array(['u', 'g', 'g', 'u', 'g', 'r', 'g', 'r']) 

visitTimes = np.array([0, 1, 1, 4, 4, 7, 8, 8]) # days 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.MaxStateChangesWithinMetric(timespan=1*24*60) 

result = metric.run(data) # minutes 

self.assertEqual(result, 3) 

 

filters = np.array(['u', 'g']) 

visitTimes = np.array([0, 1]) # days 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.MaxStateChangesWithinMetric(timespan=1*24*60) 

result = metric.run(data) # minutes 

self.assertEqual(result, 1) 

 

filters = np.array(['u', 'u']) 

visitTimes = np.array([0, 1]) # days 

data = np.core.records.fromarrays([visitTimes, filters], 

names=['observationStartMJD', 'filter']) 

metric = metrics.MaxStateChangesWithinMetric(timespan=1*24*60) 

result = metric.run(data) # minutes 

self.assertEqual(result, 0) 

 

def testTeffMetric(self): 

""" 

Test the Teff (time_effective) metric. 

""" 

filters = np.array(['g', 'g', 'g', 'g', 'g']) 

m5 = np.zeros(len(filters), float) + 25.0 

data = np.core.records.fromarrays([m5, filters], 

names=['fiveSigmaDepth', 'filter']) 

metric = metrics.TeffMetric(fiducialDepth={'g': 25}, teffBase=30.0) 

result = metric.run(data) 

self.assertEqual(result, 30.0*m5.size) 

filters = np.array(['g', 'g', 'g', 'u', 'u']) 

m5 = np.zeros(len(filters), float) + 25.0 

m5[3:5] = 20.0 

data = np.core.records.fromarrays([m5, filters], 

names=['fiveSigmaDepth', 'filter']) 

metric = metrics.TeffMetric(fiducialDepth={'u': 20, 'g': 25}, teffBase=30.0) 

result = metric.run(data) 

self.assertEqual(result, 30.0*m5.size) 

 

def testOpenShutterFractionMetric(self): 

""" 

Test the open shutter fraction metric. 

""" 

nvisit = 10 

exptime = 30. 

slewtime = 30. 

visitExpTime = np.ones(nvisit, dtype='float')*exptime 

visitTime = np.ones(nvisit, dtype='float')*(exptime+0.0) 

slewTime = np.ones(nvisit, dtype='float')*slewtime 

data = np.core.records.fromarrays([visitExpTime, visitTime, slewTime], 

names=['visitExposureTime', 'visitTime', 'slewTime']) 

metric = metrics.OpenShutterFractionMetric() 

result = metric.run(data) 

self.assertEqual(result, .5) 

 

def testBruteOSFMetric(self): 

""" 

Test the open shutter fraction metric. 

""" 

nvisit = 10 

exptime = 30. 

slewtime = 30. 

visitExpTime = np.ones(nvisit, dtype='float')*exptime 

visitTime = np.ones(nvisit, dtype='float')*(exptime+0.0) 

slewTime = np.ones(nvisit, dtype='float')*slewtime 

mjd = np.zeros(nvisit) + np.add.accumulate(visitExpTime) + np.add.accumulate(slewTime) 

mjd = mjd/60./60./24. 

data = np.core.records.fromarrays([visitExpTime, visitTime, slewTime, mjd], 

names=['visitExposureTime', 'visitTime', 'slewTime', 

'observationStartMJD']) 

metric = metrics.BruteOSFMetric() 

result = metric.run(data) 

self.assertGreater(result, 0.5) 

self.assertLess(result, 0.6) 

 

def testCompletenessMetric(self): 

""" 

Test the completeness metric. 

""" 

# Generate some test data. 

data = np.zeros(600, dtype=list(zip(['filter'], ['<U1']))) 

data['filter'][:100] = 'u' 

data['filter'][100:200] = 'g' 

data['filter'][200:300] = 'r' 

data['filter'][300:400] = 'i' 

data['filter'][400:550] = 'z' 

data['filter'][550:600] = 'y' 

slicePoint = [0] 

# Test completeness metric when requesting all filters. 

metric = metrics.CompletenessMetric(u=100, g=100, r=100, i=100, z=100, y=100) 

completeness = metric.run(data, slicePoint) 

print('xxx-metric.reduceu(completeness)=', metric.reduceu(completeness)) 

print('xxx-metric.reduceg(completeness)=', metric.reduceg(completeness)) 

assert(metric.reduceu(completeness) == 1) 

assert(metric.reduceg(completeness) == 1) 

assert(metric.reducer(completeness) == 1) 

assert(metric.reducei(completeness) == 1) 

assert(metric.reducez(completeness) == 1.5) 

assert(metric.reducey(completeness) == 0.5) 

assert(metric.reduceJoint(completeness) == 0.5) 

# Test completeness metric when requesting only some filters. 

metric = metrics.CompletenessMetric(u=0, g=100, r=100, i=100, z=100, y=100) 

completeness = metric.run(data, slicePoint) 

assert(metric.reduceu(completeness) == 1) 

assert(metric.reduceg(completeness) == 1) 

assert(metric.reducer(completeness) == 1) 

assert(metric.reducei(completeness) == 1) 

assert(metric.reducez(completeness) == 1.5) 

assert(metric.reducey(completeness) == 0.5) 

assert(metric.reduceJoint(completeness) == 0.5) 

# Test completeness metric when some filters not observed at all. 

metric = metrics.CompletenessMetric(u=100, g=100, r=100, i=100, z=100, y=100) 

data['filter'][550:600] = 'z' 

data['filter'][:100] = 'g' 

completeness = metric.run(data, slicePoint) 

assert(metric.reduceu(completeness) == 0) 

assert(metric.reduceg(completeness) == 2) 

assert(metric.reducer(completeness) == 1) 

assert(metric.reducei(completeness) == 1) 

assert(metric.reducez(completeness) == 2) 

assert(metric.reducey(completeness) == 0) 

assert(metric.reduceJoint(completeness) == 0) 

# And test that if you forget to set any requested visits, that you get the useful error message 

self.assertRaises(ValueError, metrics.CompletenessMetric, 'filter') 

 

 

class TestMemory(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

207 ↛ 208line 207 didn't jump to line 208, because the condition on line 207 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()