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from __future__ import with_statement 

from builtins import next 

from builtins import object 

import os 

import numpy as np 

import unittest 

import lsst.utils.tests 

 

from lsst.utils import getPackageDir 

from lsst.sims.catalogs.db import fileDBObject 

from lsst.sims.utils import ObservationMetaData 

from lsst.sims.catalogs.definitions import InstanceCatalog 

from lsst.sims.catalogs.decorators import compound 

from lsst.sims.catUtils.mixins import PhotometryStars 

from lsst.sims.photUtils import BandpassDict, Bandpass, Sed, PhotometricParameters, calcMagError_m5 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

class PhotometryCartoon(object): 

 

@compound('cartoon_u', 'cartoon_g', 'cartoon_r', 'cartoon_i', 'cartoon_z') 

def get_cartoon_mags(self): 

if not hasattr(self, 'cartoonBandpassDict'): 

 

bandpassDir = os.path.join(getPackageDir('sims_photUtils'), 'tests', 'cartoonSedTestData') 

 

self.cartoonBandpassDict = \ 

BandpassDict.loadTotalBandpassesFromFiles(bandpassNames = ['u', 'g', 'r', 'i', 'z'], 

bandpassDir = bandpassDir, 

bandpassRoot = 'test_bandpass_') 

 

return self._quiescentMagnitudeGetter(self.cartoonBandpassDict, self.get_cartoon_mags._colnames) 

 

@compound('sigma_cartoon_u', 'sigma_cartoon_g', 'sigma_cartoon_r', 'sigma_cartoon_i', 'sigma_cartoon_z') 

def get_cartoon_uncertainty(self): 

return self._magnitudeUncertaintyGetter(['cartoon_u', 'cartoon_g', 'cartoon_r', 

'cartoon_i', 'cartoon_z'], 

['c_u', 'c_g', 'c_r', 'c_i', 'c_z', 'c_y'], 

'cartoonBandpassDict') 

 

 

class CartoonStars(InstanceCatalog, PhotometryStars, PhotometryCartoon): 

catalog_type = __file__ + 'cartoon_stars' 

column_outputs = ['cartoon_u', 'cartoon_g', 

'sigma_cartoon_u', 'sigma_cartoon_g'] 

 

default_formats = {'f': '%.13f'} 

 

 

class CartoonUncertaintyTestCase(unittest.TestCase): 

""" 

This unit test suite will verify that our 'arbitrarily extensible' framework 

for writing magnitude uncertainty getters actually behaves as advertised 

""" 

 

def setUp(self): 

self.normband = Bandpass() 

self.normband.imsimBandpass() 

self.uband = Bandpass() 

self.uband.readThroughput(os.path.join(getPackageDir('sims_photUtils'), 'tests', 

'cartoonSedTestData', 'test_bandpass_u.dat')) 

self.gband = Bandpass() 

self.gband.readThroughput(os.path.join(getPackageDir('sims_photUtils'), 'tests', 

'cartoonSedTestData', 'test_bandpass_g.dat')) 

 

def test_stars(self): 

obs = ObservationMetaData(bandpassName=['c_u', 'c_g'], m5=[25.0, 26.0]) 

 

db_dtype = np.dtype([('id', np.int), 

('raJ2000', np.float), 

('decJ2000', np.float), 

('sedFilename', str, 100), 

('magNorm', np.float), 

('galacticAv', np.float)]) 

 

inputDir = os.path.join(getPackageDir('sims_catUtils'), 'tests', 'testData') 

inputFile = os.path.join(inputDir, 'IndicesTestCatalogStars.txt') 

db = fileDBObject(inputFile, dtype=db_dtype, runtable='test', idColKey='id') 

cat = CartoonStars(db, obs_metadata=obs) 

with lsst.utils.tests.getTempFilePath('.txt') as catName: 

cat.write_catalog(catName) 

dtype = np.dtype([(name, np.float) for name in cat.column_outputs]) 

controlData = np.genfromtxt(catName, dtype=dtype, delimiter=',') 

 

db_columns = db.query_columns(['id', 'raJ2000', 'decJ2000', 'sedFilename', 'magNorm', 'galacticAv']) 

 

sedDir = os.path.join(getPackageDir('sims_sed_library'), 'starSED', 'kurucz') 

 

for ix, line in enumerate(next(db_columns)): 

spectrum = Sed() 

spectrum.readSED_flambda(os.path.join(sedDir, line[3])) 

fnorm = spectrum.calcFluxNorm(line[4], self.normband) 

spectrum.multiplyFluxNorm(fnorm) 

a_x, b_x = spectrum.setupCCMab() 

spectrum.addCCMDust(a_x, b_x, A_v=line[5]) 

umag = spectrum.calcMag(self.uband) 

self.assertAlmostEqual(umag, controlData['cartoon_u'][ix], 3) 

gmag = spectrum.calcMag(self.gband) 

self.assertAlmostEqual(gmag, controlData['cartoon_g'][ix], 3) 

umagError, gamma = calcMagError_m5(umag, self.uband, obs.m5['c_u'], PhotometricParameters()) 

gmagError, gamma = calcMagError_m5(gmag, self.gband, obs.m5['c_g'], PhotometricParameters()) 

self.assertAlmostEqual(umagError, controlData['sigma_cartoon_u'][ix], 3) 

self.assertAlmostEqual(gmagError, controlData['sigma_cartoon_g'][ix], 3) 

 

def test_mixed_stars(self): 

""" 

Here we will test the (somewhat absurd) case of a catalog with two different bandpasses 

(lsst_ and cartoon_) in order to verify that gamma values are being cached correctly 

""" 

 

lsst_u_band = Bandpass() 

lsst_u_band.readThroughput(os.path.join(getPackageDir('throughputs'), 'baseline', 'total_u.dat')) 

lsst_g_band = Bandpass() 

lsst_g_band.readThroughput(os.path.join(getPackageDir('throughputs'), 'baseline', 'total_g.dat')) 

 

obs = ObservationMetaData(bandpassName=['c_u', 'c_g', 'u', 'g'], 

m5=[25.0, 26.0, 15.0, 16.0]) 

# make the difference in m5 between the two bandpass systems extreme 

# so that, in the unit test, we can be sure that the correct values 

# are being used for the correct getters 

 

db_dtype = np.dtype([('id', np.int), 

('raJ2000', np.float), 

('decJ2000', np.float), 

('sedFilename', str, 100), 

('magNorm', np.float), 

('galacticAv', np.float)]) 

 

inputDir = os.path.join(getPackageDir('sims_catUtils'), 'tests', 'testData') 

inputFile = os.path.join(inputDir, 'IndicesTestCatalogStars.txt') 

db = fileDBObject(inputFile, dtype=db_dtype, runtable='test', idColKey='id') 

cat = CartoonStars(db, obs_metadata=obs, column_outputs=['lsst_u', 'lsst_g', 

'sigma_lsst_u', 'sigma_lsst_g']) 

with lsst.utils.tests.getTempFilePath('.txt') as catName: 

cat.write_catalog(catName) 

dtype = np.dtype([(name, np.float) for name in cat._column_outputs]) 

controlData = np.genfromtxt(catName, dtype=dtype, delimiter=',') 

 

db_columns = db.query_columns(['id', 'raJ2000', 'decJ2000', 'sedFilename', 'magNorm', 'galacticAv']) 

 

sedDir = os.path.join(getPackageDir('sims_sed_library'), 'starSED', 'kurucz') 

 

for ix, line in enumerate(next(db_columns)): 

spectrum = Sed() 

spectrum.readSED_flambda(os.path.join(sedDir, line[3])) 

fnorm = spectrum.calcFluxNorm(line[4], self.normband) 

spectrum.multiplyFluxNorm(fnorm) 

a_x, b_x = spectrum.setupCCMab() 

spectrum.addCCMDust(a_x, b_x, A_v=line[5]) 

umag = spectrum.calcMag(self.uband) 

self.assertAlmostEqual(umag, controlData['cartoon_u'][ix], 3) 

gmag = spectrum.calcMag(self.gband) 

self.assertAlmostEqual(gmag, controlData['cartoon_g'][ix], 3) 

lsst_umag = spectrum.calcMag(lsst_u_band) 

self.assertAlmostEqual(lsst_umag, controlData['lsst_u'][ix], 3) 

lsst_gmag = spectrum.calcMag(lsst_g_band) 

self.assertAlmostEqual(lsst_gmag, controlData['lsst_g'][ix], 3) 

umagError, gamma = calcMagError_m5(umag, self.uband, obs.m5['c_u'], PhotometricParameters()) 

gmagError, gamma = calcMagError_m5(gmag, self.gband, obs.m5['c_g'], PhotometricParameters()) 

self.assertAlmostEqual(umagError, controlData['sigma_cartoon_u'][ix], 3) 

self.assertAlmostEqual(gmagError, controlData['sigma_cartoon_g'][ix], 3) 

 

lsst_umagError, gamma = calcMagError_m5(lsst_umag, lsst_u_band, 

obs.m5['u'], PhotometricParameters()) 

lsst_gmagError, gamma = calcMagError_m5(lsst_gmag, lsst_g_band, 

obs.m5['g'], PhotometricParameters()) 

 

self.assertAlmostEqual(lsst_umagError, controlData['sigma_lsst_u'][ix], 3) 

self.assertAlmostEqual(lsst_gmagError, controlData['sigma_lsst_g'][ix], 3) 

self.assertGreater(np.abs(lsst_umagError-umagError), 0.01) 

self.assertGreater(np.abs(lsst_gmagError-gmagError), 0.01) 

 

 

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

pass 

 

180 ↛ 181line 180 didn't jump to line 181, because the condition on line 180 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()