def _GenerateFromRandomChi2(config, base, value_type):
"""@brief Return a random value drawn from a Chi^2 distribution
"""
rng = galsim.config.GetRNG(config, base)
req = { 'n' : float }
kwargs, safe = galsim.config.GetAllParams(config, base, req=req)
n = kwargs['n']
dev = galsim.Chi2Deviate(rng,n=n)
val = dev()
#print(base['obj_num'],'RandomChi2: ',val)
return val, False
def _GenerateFromRandomChi2(param, param_name, base, value_type):
"""@brief Return a random value drawn from a Chi^2 distribution
"""
if 'rng' not in base:
raise ValueError("No base['rng'] available for %s.type = RandomChi2"%param_name)
rng = base['rng']
req = { 'n' : float }
kwargs, safe = GetAllParams(param, param_name, base, req=req)
n = kwargs['n']
dev = galsim.Chi2Deviate(rng,n=n)
val = dev()
#print base['obj_num'],'RandomChi2: ',val
return val, False
def test_float_value():
"""Test various ways to generate a float value
"""
import time
t1 = time.time()
config = {
'input': {
'catalog': [{
'dir': 'config_input',
'file_name': 'catalog.txt'
}, {
'dir': 'config_input',
'file_name': 'catalog.fits'
}],
'dict': [{
'dir': 'config_input',
'file_name': 'dict.p'
}, {
'dir': 'config_input',
'file_name': 'dict.json'
}, {
'dir': 'config_input',
'file_name': 'dict.yaml'
}]
},
'val1': 9.9,
'val2': int(400),
'str1': '8.73',
'str2': '2.33e-9',
'str3': '6.e-9',
'cat1': {
'type': 'Catalog',
'col': 0
},
'cat2': {
'type': 'Catalog',
'col': 1
},
'cat3': {
'type': 'Catalog',
'num': 1,
'col': 'float1'
},
'cat4': {
'type': 'Catalog',
'num': 1,
'col': 'float2'
},
'ran1': {
'type': 'Random',
'min': 0.5,
'max': 3
},
'ran2': {
'type': 'Random',
'min': -5,
'max': 0
},
'gauss1': {
'type': 'RandomGaussian',
'sigma': 1
},
'gauss2': {
'type': 'RandomGaussian',
'sigma': 3,
'mean': 4
},
'gauss3': {
'type': 'RandomGaussian',
'sigma': 1.5,
'min': -2,
'max': 2
},
'gauss4': {
'type': 'RandomGaussian',
'sigma': 0.5,
'min': 0,
'max': 0.8
},
'gauss5': {
'type': 'RandomGaussian',
'sigma': 0.3,
'mean': 0.5,
'min': 0,
'max': 0.5
},
'dist1': {
'type': 'RandomDistribution',
'function': 'config_input/distribution.txt',
'interpolant': 'linear'
},
'dist2': {
'type': 'RandomDistribution',
'function': 'config_input/distribution2.txt',
'interpolant': 'linear'
},
'dist3': {
'type': 'RandomDistribution',
'function': 'x*x',
'x_min': 0.,
'x_max': 2.0
},
'dev1': {
'type': 'RandomPoisson',
'mean': 137
},
'dev2': {
'type': 'RandomBinomial',
'N': 17
},
'dev3': {
'type': 'RandomBinomial',
'N': 17,
'p': 0.2
},
'dev4': {
'type': 'RandomWeibull',
'a': 1.7,
'b': 4.3
},
'dev5': {
'type': 'RandomGamma',
'k': 1,
'theta': 4
},
'dev6': {
'type': 'RandomGamma',
'k': 1.9,
'theta': 4.1
},
'dev7': {
'type': 'RandomChi2',
'n': 17
},
'seq1': {
'type': 'Sequence'
},
'seq2': {
'type': 'Sequence',
'step': 0.1
},
'seq3': {
'type': 'Sequence',
'first': 1.5,
'step': 0.5
},
'seq4': {
'type': 'Sequence',
'first': 10,
'step': -2
},
'seq5': {
'type': 'Sequence',
'first': 1,
'last': 2.1,
'repeat': 2
},
'list1': {
'type': 'List',
'items': [73, 8.9, 3.14]
},
'list2': {
'type': 'List',
'items':
[0.6, 1.8, 2.1, 3.7, 4.3, 5.5, 6.1, 7.0, 8.6, 9.3, 10.8, 11.2],
'index': {
'type': 'Sequence',
'first': 10,
'step': -3
}
},
'dict1': {
'type': 'Dict',
'key': 'f'
},
'dict2': {
'type': 'Dict',
'num': 1,
'key': 'f'
},
'dict3': {
'type': 'Dict',
'num': 2,
'key': 'f'
},
'dict4': {
'type': 'Dict',
'num': 2,
'key': 'noise.models.1.gain'
},
'sum1': {
'type': 'Sum',
'items': [72, '2.33', {
'type': 'Dict',
'key': 'f'
}]
}
}
test_yaml = True
try:
galsim.config.ProcessInput(config)
except:
# We don't require PyYAML as a dependency, so if this fails, just remove the YAML dict.
del config['input']['dict'][2]
galsim.config.ProcessInput(config)
test_yaml = False
# Test direct values
val1 = galsim.config.ParseValue(config, 'val1', config, float)[0]
np.testing.assert_almost_equal(val1, 9.9)
val2 = galsim.config.ParseValue(config, 'val2', config, float)[0]
np.testing.assert_almost_equal(val2, 400)
# Test conversions from strings
str1 = galsim.config.ParseValue(config, 'str1', config, float)[0]
np.testing.assert_almost_equal(str1, 8.73)
str2 = galsim.config.ParseValue(config, 'str2', config, float)[0]
np.testing.assert_almost_equal(str2, 2.33e-9)
str3 = galsim.config.ParseValue(config, 'str3', config, float)[0]
np.testing.assert_almost_equal(str3, 6.0e-9)
# Test values read from a Catalog
cat1 = []
cat2 = []
cat3 = []
cat4 = []
config['index_key'] = 'file_num'
for k in range(5):
config['file_num'] = k
cat1.append(galsim.config.ParseValue(config, 'cat1', config, float)[0])
cat2.append(galsim.config.ParseValue(config, 'cat2', config, float)[0])
cat3.append(galsim.config.ParseValue(config, 'cat3', config, float)[0])
cat4.append(galsim.config.ParseValue(config, 'cat4', config, float)[0])
np.testing.assert_array_almost_equal(cat1,
[1.234, 2.345, 3.456, 1.234, 2.345])
np.testing.assert_array_almost_equal(cat2,
[4.131, -900, 8000, 4.131, -900])
np.testing.assert_array_almost_equal(cat3,
[1.234, 2.345, 3.456, 1.234, 2.345])
np.testing.assert_array_almost_equal(cat4,
[4.131, -900, 8000, 4.131, -900])
# Test values generated from a uniform deviate
rng = galsim.UniformDeviate(1234)
config['rng'] = galsim.UniformDeviate(
1234) # A second copy starting with the same seed.
for k in range(6):
config[
'obj_num'] = k # The Random type doesn't use obj_num, but this keeps it
# from thinking current_val is still current.
ran1 = galsim.config.ParseValue(config, 'ran1', config, float)[0]
np.testing.assert_almost_equal(ran1, rng() * 2.5 + 0.5)
ran2 = galsim.config.ParseValue(config, 'ran2', config, float)[0]
np.testing.assert_almost_equal(ran2, rng() * 5 - 5)
# Test values generated from a Gaussian deviate
for k in range(6):
config['obj_num'] = k
gauss1 = galsim.config.ParseValue(config, 'gauss1', config, float)[0]
gd = galsim.GaussianDeviate(rng, mean=0, sigma=1)
np.testing.assert_almost_equal(gauss1, gd())
gauss2 = galsim.config.ParseValue(config, 'gauss2', config, float)[0]
gd = galsim.GaussianDeviate(rng, mean=4, sigma=3)
np.testing.assert_almost_equal(gauss2, gd())
gauss3 = galsim.config.ParseValue(config, 'gauss3', config, float)[0]
gd = galsim.GaussianDeviate(rng, mean=0, sigma=1.5)
gd_val = gd()
while math.fabs(gd_val) > 2:
gd_val = gd()
np.testing.assert_almost_equal(gauss3, gd_val)
gauss4 = galsim.config.ParseValue(config, 'gauss4', config, float)[0]
gd = galsim.GaussianDeviate(rng, mean=0, sigma=0.5)
gd_val = math.fabs(gd())
while gd_val > 0.8:
gd_val = math.fabs(gd())
np.testing.assert_almost_equal(gauss4, gd_val)
gauss5 = galsim.config.ParseValue(config, 'gauss5', config, float)[0]
gd = galsim.GaussianDeviate(rng, mean=0.5, sigma=0.3)
gd_val = gd()
if gd_val > 0.5:
gd_val = 1 - gd_val
while gd_val < 0:
gd_val = gd()
if gd_val > 0.5:
gd_val = 1 - gd_val
np.testing.assert_almost_equal(gauss5, gd_val)
# Test values generated from a distribution in a file
dd = galsim.DistDeviate(rng,
function='config_input/distribution.txt',
interpolant='linear')
for k in range(6):
config['obj_num'] = k
dist1 = galsim.config.ParseValue(config, 'dist1', config, float)[0]
np.testing.assert_almost_equal(dist1, dd())
dd = galsim.DistDeviate(rng,
function='config_input/distribution2.txt',
interpolant='linear')
for k in range(6):
config['obj_num'] = k
dist2 = galsim.config.ParseValue(config, 'dist2', config, float)[0]
np.testing.assert_almost_equal(dist2, dd())
dd = galsim.DistDeviate(rng, function=lambda x: x * x, x_min=0., x_max=2.)
for k in range(6):
config['obj_num'] = k
dist3 = galsim.config.ParseValue(config, 'dist3', config, float)[0]
np.testing.assert_almost_equal(dist3, dd())
# Test values generated from various other deviates
for k in range(6):
config['obj_num'] = k
dev = galsim.PoissonDeviate(rng, mean=137)
dev1 = galsim.config.ParseValue(config, 'dev1', config, float)[0]
np.testing.assert_almost_equal(dev1, dev())
dev = galsim.BinomialDeviate(rng, N=17)
dev2 = galsim.config.ParseValue(config, 'dev2', config, float)[0]
np.testing.assert_almost_equal(dev2, dev())
dev = galsim.BinomialDeviate(rng, N=17, p=0.2)
dev3 = galsim.config.ParseValue(config, 'dev3', config, float)[0]
np.testing.assert_almost_equal(dev3, dev())
dev = galsim.WeibullDeviate(rng, a=1.7, b=4.3)
dev4 = galsim.config.ParseValue(config, 'dev4', config, float)[0]
np.testing.assert_almost_equal(dev4, dev())
dev = galsim.GammaDeviate(rng, k=1, theta=4)
dev5 = galsim.config.ParseValue(config, 'dev5', config, float)[0]
np.testing.assert_almost_equal(dev5, dev())
dev = galsim.GammaDeviate(rng, k=1.9, theta=4.1)
dev6 = galsim.config.ParseValue(config, 'dev6', config, float)[0]
np.testing.assert_almost_equal(dev6, dev())
dev = galsim.Chi2Deviate(rng, n=17)
dev7 = galsim.config.ParseValue(config, 'dev7', config, float)[0]
np.testing.assert_almost_equal(dev7, dev())
# Test values generated from a Sequence
seq1 = []
seq2 = []
seq3 = []
seq4 = []
seq5 = []
config['index_key'] = 'file_num'
for k in range(6):
config['file_num'] = k
seq1.append(galsim.config.ParseValue(config, 'seq1', config, float)[0])
config['index_key'] = 'image_num'
for k in range(6):
config['image_num'] = k
seq2.append(galsim.config.ParseValue(config, 'seq2', config, float)[0])
config['index_key'] = 'obj_num'
for k in range(6):
config['obj_num'] = k
seq3.append(galsim.config.ParseValue(config, 'seq3', config, float)[0])
config['index_key'] = 'obj_num_in_file'
config['start_obj_num'] = 10
for k in range(6):
config['obj_num'] = k + 10
seq4.append(galsim.config.ParseValue(config, 'seq4', config, float)[0])
seq5.append(galsim.config.ParseValue(config, 'seq5', config, float)[0])
np.testing.assert_array_almost_equal(seq1, [0, 1, 2, 3, 4, 5])
np.testing.assert_array_almost_equal(seq2, [0, 0.1, 0.2, 0.3, 0.4, 0.5])
np.testing.assert_array_almost_equal(seq3, [1.5, 2, 2.5, 3, 3.5, 4])
np.testing.assert_array_almost_equal(seq4, [10, 8, 6, 4, 2, 0])
np.testing.assert_array_almost_equal(seq5, [1, 1, 2, 2, 1, 1])
# Test values taken from a List
list1 = []
list2 = []
config['index_key'] = 'obj_num'
for k in range(5):
config['obj_num'] = k
list1.append(
galsim.config.ParseValue(config, 'list1', config, float)[0])
list2.append(
galsim.config.ParseValue(config, 'list2', config, float)[0])
np.testing.assert_array_almost_equal(list1, [73, 8.9, 3.14, 73, 8.9])
np.testing.assert_array_almost_equal(list2, [10.8, 7.0, 4.3, 1.8, 10.8])
# Test values read from a Dict
dict = []
dict.append(galsim.config.ParseValue(config, 'dict1', config, float)[0])
dict.append(galsim.config.ParseValue(config, 'dict2', config, float)[0])
if test_yaml:
dict.append(
galsim.config.ParseValue(config, 'dict3', config, float)[0])
dict.append(
galsim.config.ParseValue(config, 'dict4', config, float)[0])
else:
dict.append(0.1)
dict.append(1.9)
np.testing.assert_array_almost_equal(dict, [23.17, -17.23, 0.1, 1.9])
sum1 = galsim.config.ParseValue(config, 'sum1', config, float)[0]
np.testing.assert_almost_equal(sum1, 72 + 2.33 + 23.17)
t2 = time.time()
print 'time for %s = %.2f' % (funcname(), t2 - t1)
def test_dep_random():
"""Test the deprecated methods in galsim/deprecated/random.py
"""
rng = galsim.BaseDeviate(123)
gd = galsim.GaussianDeviate(rng, mean=0.5, sigma=1.7)
np.testing.assert_almost_equal(gd.getMean(), 0.5)
np.testing.assert_almost_equal(gd.getSigma(), 1.7)
check_dep(gd.setMean, 0.9)
np.testing.assert_almost_equal(gd.getMean(), 0.9)
np.testing.assert_almost_equal(gd.getSigma(), 1.7)
check_dep(gd.setSigma, 2.3)
np.testing.assert_almost_equal(gd.getMean(), 0.9)
np.testing.assert_almost_equal(gd.getSigma(), 2.3)
bd = galsim.BinomialDeviate(rng, N=7, p=0.7)
np.testing.assert_almost_equal(bd.getN(), 7)
np.testing.assert_almost_equal(bd.getP(), 0.7)
check_dep(bd.setN, 9)
np.testing.assert_almost_equal(bd.getN(), 9)
np.testing.assert_almost_equal(bd.getP(), 0.7)
check_dep(bd.setP, 0.3)
np.testing.assert_almost_equal(bd.getN(), 9)
np.testing.assert_almost_equal(bd.getP(), 0.3)
pd = galsim.PoissonDeviate(rng, mean=0.5)
np.testing.assert_almost_equal(pd.getMean(), 0.5)
check_dep(pd.setMean, 0.9)
np.testing.assert_almost_equal(pd.getMean(), 0.9)
wd = galsim.WeibullDeviate(rng, a=0.5, b=1.7)
np.testing.assert_almost_equal(wd.getA(), 0.5)
np.testing.assert_almost_equal(wd.getB(), 1.7)
check_dep(wd.setA, 0.9)
np.testing.assert_almost_equal(wd.getA(), 0.9)
np.testing.assert_almost_equal(wd.getB(), 1.7)
check_dep(wd.setB, 2.3)
np.testing.assert_almost_equal(wd.getA(), 0.9)
np.testing.assert_almost_equal(wd.getB(), 2.3)
gd = galsim.GammaDeviate(rng, k=0.5, theta=1.7)
np.testing.assert_almost_equal(gd.getK(), 0.5)
np.testing.assert_almost_equal(gd.getTheta(), 1.7)
check_dep(gd.setK, 0.9)
np.testing.assert_almost_equal(gd.getK(), 0.9)
np.testing.assert_almost_equal(gd.getTheta(), 1.7)
check_dep(gd.setTheta, 2.3)
np.testing.assert_almost_equal(gd.getK(), 0.9)
np.testing.assert_almost_equal(gd.getTheta(), 2.3)
cd = galsim.Chi2Deviate(rng, n=5)
np.testing.assert_almost_equal(cd.getN(), 5)
check_dep(cd.setN, 9)
np.testing.assert_almost_equal(cd.getN(), 9)
