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cosmodc2.py
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cosmodc2.py
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"""
CosmoDC2 galaxy catalog class.
"""
from __future__ import division
import os
import re
from itertools import product
from functools import partial
import warnings
from distutils.version import StrictVersion # pylint: disable=no-name-in-module,import-error
import yaml
import numpy as np
import h5py
import healpy as hp
from astropy.cosmology import FlatLambdaCDM
from GCR import BaseGenericCatalog
from .utils import md5, first
__all__ = ['CosmoDC2GalaxyCatalog', 'BaseDC2GalaxyCatalog', 'BaseDC2SnapshotGalaxyCatalog',
'BaseDC2ShearCatalog', 'CosmoDC2AddonCatalog']
__version__ = '1.1.5'
CHECK_FILE_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'catalog_configs/_cosmoDC2_check.yaml')
def _calc_weighted_size(size1, size2, lum1, lum2):
return ((size1*lum1) + (size2*lum2)) / (lum1+lum2)
def _calc_weighted_size_minor(size1, size2, lum1, lum2, ell):
size = _calc_weighted_size(size1, size2, lum1, lum2)
return size * (1.0 - ell) / (1.0 + ell)
def _calc_mag(conv, shear1, shear2):
mag = 1.0/((1.0 - conv)**2 - shear1**2 - shear2**2)
return mag
def _calc_Rv(lum_v, lum_v_dust, lum_b, lum_b_dust): #Rv definition with best behavior
with np.errstate(divide='ignore', invalid='ignore'):
Av = -2.5*np.log10(lum_v_dust) + 2.5*np.log10(lum_v)
Ab = -2.5*np.log10(lum_b_dust) + 2.5*np.log10(lum_b)
Ebv = -2.5*np.log10(lum_b_dust) + 2.5*np.log10(lum_b) - 2.5*np.log10(lum_v_dust) + 2.5*np.log10(lum_v)
Rv = Av / Ebv
Rv[(Av == 0) & (Ab == 0)] = 1.0
#remove remaining nans and infs for image sims
mask = np.isfinite(Rv)
r = np.random.RandomState(43) # for reproduceability
Rv[~mask] = r.uniform(1.0, 5.0, np.count_nonzero(~mask))
return Rv
def _calc_Av(lum_v, lum_v_dust):
with np.errstate(divide='ignore', invalid='ignore'):
Av = -2.5*(np.log10(lum_v_dust/lum_v))
return Av
def _gen_position_angle(size_reference):
# pylint: disable=protected-access
size = size_reference.size
if not hasattr(_gen_position_angle, "_pos_angle") or _gen_position_angle._pos_angle.size != size:
_gen_position_angle._pos_angle = np.random.RandomState(123497).uniform(0, 180, size)
return _gen_position_angle._pos_angle
def _calc_ellipticity_1(ellipticity):
# position angle using ellipticity as reference for the size or
# the array. The angle is converted from degrees to radians
pos_angle = _gen_position_angle(ellipticity)*np.pi/180.0
# use the correct conversion for ellipticity 1 from ellipticity
# and position angle
return ellipticity*np.cos(2.0*pos_angle)
def _calc_ellipticity_2(ellipticity):
# position angle using ellipticity as reference for the size or
# the array. The angle is converted from degrees to radians
pos_angle = _gen_position_angle(ellipticity)*np.pi/180.0
# use the correct conversion for ellipticity 2 from ellipticity
# and position angle
return ellipticity*np.sin(2.0*pos_angle)
def _calc_lensed_magnitude(magnitude, magnification):
magnification[magnification == 0] = 1.0
return magnitude -2.5*np.log10(magnification)
def _add_to_native_quantity_collector(name, obj, collector):
if isinstance(obj, h5py.Dataset):
collector.add(name)
class CosmoDC2ParentClass(BaseGenericCatalog):
"""
CosmoDC2ParentClass: the parent class for
CosmoDC2GalaxyCatalog, BaseDC2GalaxyCatalog, and BaseDC2ShearCatalog
"""
def _subclass_init(self, catalog_root_dir, catalog_filename_template, **kwargs):
# pylint: disable=W0221
if not os.path.isdir(catalog_root_dir):
raise ValueError('Catalog directory {} does not exist'.format(catalog_root_dir))
self.lightcone = kwargs.get('lightcone', True)
get_file_list = self._get_healpix_file_list if self.lightcone else self._get_snapshot_file_list
self._file_list = get_file_list(
catalog_root_dir,
catalog_filename_template,
**kwargs
)
self._healpix_files = self._file_list # for backward compatibility
if 'cosmology' in kwargs:
cosmology = kwargs['cosmology']
cosmo_astropy_allowed = FlatLambdaCDM.__init__.__code__.co_varnames[1:]
cosmo_astropy = {k: v for k, v in cosmology.items() if k in cosmo_astropy_allowed}
self.cosmology = FlatLambdaCDM(**cosmo_astropy)
for k, v in cosmology.items():
if k not in cosmo_astropy_allowed:
setattr(self.cosmology, k, v)
else:
self.cosmology = None
self.version = kwargs.get('version', '0.0.0')
if StrictVersion(__version__) < self.version:
raise ValueError('Reader version {} is less than config version {} for'.format(__version__, self.version))
self.file_check_info = dict()
if kwargs.get('check_md5', True) or kwargs.get('check_size', True):
try:
with open(CHECK_FILE_PATH, 'r') as f:
self.file_check_info = yaml.safe_load(f)
except (IOError, OSError):
pass
else:
self.file_check_info = self.file_check_info.get(self.version, dict())
if not self.file_check_info:
warnings.warn('Cannot find valid infomation for file checks! Version {} not available in {}'.format(self.version, CHECK_FILE_PATH))
# setting metadata (e.g., sky_area, box_size, redshift)
meta_dict, self._native_quantities, self._quantity_info = self._process_metadata(**kwargs)
for key, value in meta_dict.items():
setattr(self, key, value)
if self.lightcone:
self._native_filter_quantities = {'healpix_pixel', 'redshift_block_lower'}
else:
self._native_filter_quantities = {'block'}
self._quantity_modifiers = self._generate_quantity_modifiers()
self.halo_mass_def = kwargs.get('halo_mass_def', 'FoF, b=0.168')
def _get_group_names(self, fh): # pylint: disable=W0613
return ['galaxyProperties']
def _generate_native_quantity_list(self):
return self._native_quantities
@staticmethod
def _generate_quantity_modifiers():
return {}
@staticmethod
def _get_healpix_file_list(catalog_root_dir, catalog_filename_template, # pylint: disable=W0613
zlo=None, zhi=None, healpix_pixels=None,
check_file_list_complete=True, **kwargs):
healpix_files = dict()
fname_pattern = catalog_filename_template.format(r'(\d)', r'(\d)', r'(\d+)')
for f in sorted(os.listdir(catalog_root_dir)):
m = re.match(fname_pattern, f)
if m is None:
continue
zlo_this, zhi_this, hpx_this = tuple(map(int, m.groups()))
# check if this file is needed
if ((zlo is not None and zhi_this <= zlo) or
(zhi is not None and zlo_this >= zhi) or
(healpix_pixels is not None and hpx_this not in healpix_pixels)):
continue
healpix_files[(zlo_this, hpx_this)] = os.path.join(catalog_root_dir, f)
if check_file_list_complete:
if zlo is None:
zlo = min(z for z, _ in healpix_files)
if zhi is None:
zhi = max(z for z, _ in healpix_files) + 1
possible_hpx = list(set(hpx for _, hpx in healpix_files)) if healpix_pixels is None else healpix_pixels
if not all(key in healpix_files for key in product(range(zlo, zhi), possible_hpx)):
raise ValueError('Some catalog files are missing!')
return healpix_files
@staticmethod
def _get_snapshot_file_list(catalog_root_dir, catalog_filename_template, # pylint: disable=W0613
blocks=None, check_file_list_complete=True, **kwargs):
snapshot_files = dict()
fname_pattern = catalog_filename_template.format(r'(\d+)')
for f in sorted(os.listdir(catalog_root_dir)):
m = re.match(fname_pattern, f)
if m is None:
continue
block_this = int(m.groups()[0])
# check if this file is needed
if (blocks is not None and block_this not in blocks):
continue
snapshot_files[block_this] = os.path.join(catalog_root_dir, f)
if check_file_list_complete and blocks is not None:
if not all(block_this in snapshot_files for block_this in blocks):
raise ValueError('Some catalog files are missing!')
return snapshot_files
def _collect_native_quantities(self, fh, collect_info_dict=False):
native_quantities = set()
collect = partial(_add_to_native_quantity_collector, collector=native_quantities)
group_name = first(self._get_group_names(fh))
fh[group_name].visititems(collect)
if collect_info_dict:
quantity_info_dict = dict()
modifier = lambda k, v: None if k == 'description' and v == b'None given' else v.decode()
for quantity in native_quantities:
quantity_info_dict[quantity] = {k: modifier(k, v) for k, v in fh[group_name][quantity].attrs.items()}
return native_quantities, quantity_info_dict
return native_quantities
def _check_version(self, fh, file_name):
catalog_version = list()
for version_label in ('Major', 'Minor', 'MinorMinor'):
try:
catalog_version.append(fh['/metaData/version' + version_label][()])
except KeyError:
break
catalog_version = StrictVersion('.'.join(map(str, catalog_version or (0, 0))))
config_version = StrictVersion(self.version)
if config_version != catalog_version:
raise ValueError('Catalog version {} does not match config version {} for healpix file {}'.format(catalog_version, config_version, file_name))
def _check_cosmology(self, fh, file_name, atol):
for name_hdf5, name_astropy in (('H_0', 'h'), ('Omega_matter', 'Om0'), ('Omega_b', 'Ob0')):
try:
value_catalog = fh['metaData/{}'.format(name_hdf5)][()]
except KeyError:
warnings.warn('missing cosmology {} in metadata for healpix file {}'.format(name_hdf5, file_name))
continue
if name_hdf5 == 'H_0':
value_catalog /= 100.0
value_config = getattr(self.cosmology, name_astropy)
if abs(value_catalog - value_config) > atol:
raise ValueError('Mismatch in cosmological parameters ({} should be {}, not {}) for healpix file {}'.format(name_hdf5, value_config, value_catalog, file_name))
def _process_metadata(self, ensure_quantity_consistent=False, # pylint: disable=W0613
check_version=True, check_md5=True, check_size=True,
check_cosmology=True, cosmology_atol=1e-4, **kwargs):
meta_dict = dict()
native_quantities = None
quantity_info = None
if self.lightcone:
sky_area = dict()
max_healpixel = max(hpx_this for _, hpx_this in self._healpix_files)
min_valid_nside = hp.pixelfunc.get_min_valid_nside(max_healpixel)
default_sky_area = hp.nside2pixarea(min_valid_nside, degrees=True)
if check_size and 'size' not in self.file_check_info:
check_size = False
warnings.warn('Not able to perform size check: no size specified in {}'.format(CHECK_FILE_PATH))
if check_md5 and 'md5' not in self.file_check_info:
check_md5 = False
warnings.warn('Not able to perform md5 check: no md5 sum specified in {}'.format(CHECK_FILE_PATH))
for file_key, file_path in self._file_list.items():
file_name = os.path.basename(file_path)
if check_size and os.path.getsize(file_path) != self.file_check_info['size'].get(file_name):
raise ValueError('File size does not match for healpix file {}'.format(file_name))
if check_md5 and md5(file_path) != self.file_check_info['md5'].get(file_name):
raise ValueError('md5 sum does not match for healpix file {}'.format(file_name))
with h5py.File(file_path, 'r') as fh:
if check_version:
self._check_version(fh, file_name)
if check_cosmology:
self._check_cosmology(fh, file_name, cosmology_atol)
if self.lightcone: # get sky area
try:
sky_area_this = fh['metaData/skyArea'][()]
except KeyError:
sky_area_this = default_sky_area
sky_area_this = float(sky_area_this)
hpx_this = file_key[1]
if sky_area.get(hpx_this, 0) < sky_area_this:
sky_area[hpx_this] = sky_area_this
else: # get other meta info (box size and redshift)
for key in ('box_size', 'redshift'):
try:
value_this = fh['metaData/'+key][()]
except KeyError:
pass
else:
value_this = float(value_this)
if key not in meta_dict:
meta_dict[key] = value_this
elif meta_dict[key] != value_this:
warnings.warn('found inconsistency in {}'.format(key))
# get native quantities
if native_quantities is None or quantity_info is None:
native_quantities, quantity_info = self._collect_native_quantities(fh, collect_info_dict=True)
elif (ensure_quantity_consistent and
native_quantities != self._collect_native_quantities(fh)):
raise ValueError('native quantities are not consistent among different files')
if self.lightcone:
meta_dict['sky_area'] = sum(sky_area.values())
else:
if 'redshift' not in meta_dict:
filename = os.path.basename(first(self._file_list.values()))
m = re.search(r'z(\d+(?:\.\d+)?)', filename)
meta_dict['redshift'] = float(m.groups()[0]) if m else None
if 'box_size' not in meta_dict:
meta_dict['box_size'] = getattr(self, '_default_box_size', None)
return meta_dict, native_quantities, quantity_info
def _iter_native_dataset(self, native_filters=None):
if self.lightcone:
key_to_dict = lambda key: dict(zip(('redshift_block_lower', 'healpix_pixel'), key))
else:
key_to_dict = lambda key: {'block': key}
for key, file_path in self._file_list.items():
d = key_to_dict(key)
if native_filters is not None and not native_filters.check_scalar(d):
continue
with h5py.File(file_path, 'r') as fh:
for group in self._get_group_names(fh):
# pylint: disable=W0640
if len(fh[group]):
yield lambda native_quantity: fh['{}/{}'.format(group, native_quantity)][()]
def _get_quantity_info_dict(self, quantity, default=None):
q_mod = self.get_quantity_modifier(quantity)
if callable(q_mod) or (isinstance(q_mod, (tuple, list)) and len(q_mod) > 1 and callable(q_mod[0])):
warnings.warn('This value is composed of a function on native quantities. So we have no idea what the units are')
return default
return self._quantity_info.get(q_mod or quantity, default)
class CosmoDC2GalaxyCatalog(CosmoDC2ParentClass):
"""
CosmoDC2 galaxy catalog reader, inherited from CosmoDC2ParentClass
"""
def _generate_quantity_modifiers(self):
quantity_modifiers = {
'galaxy_id' : 'galaxyID',
'ra': 'ra',
'dec': 'dec',
'ra_true': 'ra_true',
'dec_true': 'dec_true',
'redshift': 'redshift',
'redshift_true': 'redshiftHubble',
'shear_1': 'shear1',
'shear_2': (np.negative, 'shear2'),
'shear_2_treecorr': (np.negative, 'shear2'),
'shear_2_phosim': 'shear2',
'convergence': 'convergence',
'magnification': (lambda mag: np.where(mag < 0.2, 1.0, mag), 'magnification'),
'halo_id': 'uniqueHaloID',
'halo_mass': (lambda x: x/self.cosmology.h, 'hostHaloMass'),
'is_central': (lambda x: x.astype(np.bool), 'isCentral'),
'stellar_mass': 'totalMassStellar',
'stellar_mass_disk': 'diskMassStellar',
'stellar_mass_bulge': 'spheroidMassStellar',
'size_disk_true': 'morphology/diskMajorAxisArcsec',
'size_bulge_true': 'morphology/spheroidMajorAxisArcsec',
'size_minor_disk_true': 'morphology/diskMinorAxisArcsec',
'size_minor_bulge_true': 'morphology/spheroidMinorAxisArcsec',
'position_angle_true': (_gen_position_angle, 'morphology/positionAngle'),
'sersic_disk': 'morphology/diskSersicIndex',
'sersic_bulge': 'morphology/spheroidSersicIndex',
'ellipticity_true': 'morphology/totalEllipticity',
'ellipticity_1_true': (_calc_ellipticity_1, 'morphology/totalEllipticity'),
'ellipticity_2_true': (_calc_ellipticity_2, 'morphology/totalEllipticity'),
'ellipticity_disk_true': 'morphology/diskEllipticity',
'ellipticity_1_disk_true': (_calc_ellipticity_1, 'morphology/diskEllipticity'),
'ellipticity_2_disk_true': (_calc_ellipticity_2, 'morphology/diskEllipticity'),
'ellipticity_bulge_true': 'morphology/spheroidEllipticity',
'ellipticity_1_bulge_true': (_calc_ellipticity_1, 'morphology/spheroidEllipticity'),
'ellipticity_2_bulge_true': (_calc_ellipticity_2, 'morphology/spheroidEllipticity'),
'size_true': (
_calc_weighted_size,
'morphology/diskMajorAxisArcsec',
'morphology/spheroidMajorAxisArcsec',
'LSST_filters/diskLuminositiesStellar:LSST_r:rest',
'LSST_filters/spheroidLuminositiesStellar:LSST_r:rest',
),
'size_minor_true': (
_calc_weighted_size_minor,
'morphology/diskMajorAxisArcsec',
'morphology/spheroidMajorAxisArcsec',
'LSST_filters/diskLuminositiesStellar:LSST_r:rest',
'LSST_filters/spheroidLuminositiesStellar:LSST_r:rest',
'morphology/totalEllipticity',
),
'bulge_to_total_ratio_i': (
lambda x, y: x/(x+y),
'SDSS_filters/spheroidLuminositiesStellar:SDSS_i:observed',
'SDSS_filters/diskLuminositiesStellar:SDSS_i:observed',
),
'A_v': (
_calc_Av,
'otherLuminosities/totalLuminositiesStellar:V:rest',
'otherLuminosities/totalLuminositiesStellar:V:rest:dustAtlas',
),
'A_v_disk': (
_calc_Av,
'otherLuminosities/diskLuminositiesStellar:V:rest',
'otherLuminosities/diskLuminositiesStellar:V:rest:dustAtlas',
),
'A_v_bulge': (
_calc_Av,
'otherLuminosities/spheroidLuminositiesStellar:V:rest',
'otherLuminosities/spheroidLuminositiesStellar:V:rest:dustAtlas',
),
'R_v': (
_calc_Rv,
'otherLuminosities/totalLuminositiesStellar:V:rest',
'otherLuminosities/totalLuminositiesStellar:V:rest:dustAtlas',
'otherLuminosities/totalLuminositiesStellar:B:rest',
'otherLuminosities/totalLuminositiesStellar:B:rest:dustAtlas',
),
'R_v_disk': (
_calc_Rv,
'otherLuminosities/diskLuminositiesStellar:V:rest',
'otherLuminosities/diskLuminositiesStellar:V:rest:dustAtlas',
'otherLuminosities/diskLuminositiesStellar:B:rest',
'otherLuminosities/diskLuminositiesStellar:B:rest:dustAtlas',
),
'R_v_bulge': (
_calc_Rv,
'otherLuminosities/spheroidLuminositiesStellar:V:rest',
'otherLuminosities/spheroidLuminositiesStellar:V:rest:dustAtlas',
'otherLuminosities/spheroidLuminositiesStellar:B:rest',
'otherLuminosities/spheroidLuminositiesStellar:B:rest:dustAtlas',
),
'position_x': (lambda x: x/self.cosmology.h, 'x'),
'position_y': (lambda x: x/self.cosmology.h, 'y'),
'position_z': (lambda x: x/self.cosmology.h, 'z'),
'velocity_x': 'vx',
'velocity_y': 'vy',
'velocity_z': 'vz',
}
# add magnitudes
for band in 'ugrizyY':
if band != 'y' and band != 'Y':
quantity_modifiers['mag_{}_sdss'.format(band)] = (_calc_lensed_magnitude, 'SDSS_filters/magnitude:SDSS_{}:observed:dustAtlas'.format(band), 'magnification',)
quantity_modifiers['mag_{}_sdss_no_host_extinction'.format(band)] = (_calc_lensed_magnitude, 'SDSS_filters/magnitude:SDSS_{}:observed'.format(band), 'magnification',)
quantity_modifiers['mag_true_{}_sdss'.format(band)] = 'SDSS_filters/magnitude:SDSS_{}:observed:dustAtlas'.format(band)
quantity_modifiers['mag_true_{}_sdss_no_host_extinction'.format(band)] = 'SDSS_filters/magnitude:SDSS_{}:observed'.format(band)
quantity_modifiers['Mag_true_{}_sdss_z0'.format(band)] = 'SDSS_filters/magnitude:SDSS_{}:rest:dustAtlas'.format(band)
quantity_modifiers['Mag_true_{}_sdss_z0_no_host_extinction'.format(band)] = 'SDSS_filters/magnitude:SDSS_{}:rest'.format(band)
quantity_modifiers['mag_{}_lsst'.format(band)] = (_calc_lensed_magnitude, 'LSST_filters/magnitude:LSST_{}:observed:dustAtlas'.format(band.lower()), 'magnification',)
quantity_modifiers['mag_{}_lsst_no_host_extinction'.format(band)] = (_calc_lensed_magnitude, 'LSST_filters/magnitude:LSST_{}:observed'.format(band.lower()), 'magnification',)
quantity_modifiers['mag_true_{}_lsst'.format(band)] = 'LSST_filters/magnitude:LSST_{}:observed:dustAtlas'.format(band.lower())
quantity_modifiers['mag_true_{}_lsst_no_host_extinction'.format(band)] = 'LSST_filters/magnitude:LSST_{}:observed'.format(band.lower())
quantity_modifiers['Mag_true_{}_lsst_z0'.format(band)] = 'LSST_filters/magnitude:LSST_{}:rest:dustAtlas'.format(band.lower())
quantity_modifiers['Mag_true_{}_lsst_z0_no_host_extinction'.format(band)] = 'LSST_filters/magnitude:LSST_{}:rest'.format(band.lower())
if band != 'Y':
quantity_modifiers['mag_{}'.format(band)] = quantity_modifiers['mag_{}_lsst'.format(band)]
quantity_modifiers['mag_true_{}'.format(band)] = quantity_modifiers['mag_true_{}_lsst'.format(band)]
# add SEDs
translate_component_name = {'total': '', 'disk': '_disk', 'spheroid': '_bulge'}
sed_re = re.compile(r'^SEDs/([a-z]+)LuminositiesStellar:SED_(\d+)_(\d+):rest((?::dustAtlas)?)$')
for quantity in self._native_quantities:
m = sed_re.match(quantity)
if m is None:
continue
component, start, width, dust = m.groups()
key = 'sed_{}_{}{}{}'.format(start, width, translate_component_name[component], '' if dust else '_no_host_extinction')
quantity_modifiers[key] = quantity
# make quantity modifiers work in older versions
version = StrictVersion(self.version)
if version < StrictVersion('0.4.6'):
quantity_modifiers['halo_id'] = 'UMachineNative/halo_id'
if version < StrictVersion('0.4.4'):
self._native_quantities.difference_update(set(q for q in self._native_quantities if (
q.startswith('emissionLines/') or q.endswith('ContinuumLuminosity')
)))
if version <= StrictVersion('0.2'):
quantity_modifiers['halo_id'] = 'hostHaloTag'
return quantity_modifiers
def _collect_native_quantities(self, fh, collect_info_dict=False):
orig_output = super()._collect_native_quantities(fh, collect_info_dict)
# a hot fix of the unit of native halo mass (hostHaloMass), which should be Msun/h
if collect_info_dict:
orig_output[1]['hostHaloMass']['units'] = 'Msun/h'
return orig_output
class BaseDC2GalaxyCatalog(CosmoDC2ParentClass):
"""
BaseDC2 galaxy catalog reader, inherited from CosmoDC2ParentClass
"""
def _get_group_names(self, fh):
return [k for k in fh if k.isdigit()]
def _generate_quantity_modifiers(self):
quantity_modifiers = {
'galaxy_id' : 'galaxy_id',
'ra_true': 'ra',
'dec_true': 'dec',
'redshift_true': 'redshift',
'halo_id': 'target_halo_id',
'halo_mass': (lambda x: x/self.cosmology.h, 'target_halo_mass'),
'stellar_mass': 'obs_sm',
'position_x': (lambda x: x/self.cosmology.h, 'x'),
'position_y': (lambda x: x/self.cosmology.h, 'y'),
'position_z': (lambda x: x/self.cosmology.h, 'z'),
'velocity_x': 'vx',
'velocity_y': 'vy',
'velocity_z': 'vz',
'is_central': (lambda x: x == -1, 'upid'),
}
# add magnitudes
for band in 'gri':
quantity_modifiers['Mag_true_{}_sdss_z0'.format(band)] = 'restframe_extincted_sdss_abs_mag{}'.format(band)
quantity_modifiers['Mag_true_{}_lsst_z0'.format(band)] = 'restframe_extincted_sdss_abs_mag{}'.format(band)
return quantity_modifiers
class BaseDC2SnapshotGalaxyCatalog(CosmoDC2ParentClass):
"""
BaseDC2 snapshot galaxy catalog reader, inherited from CosmoDC2ParentClass
"""
_default_box_size = 3000.0
def _generate_quantity_modifiers(self):
quantity_modifiers = {
'galaxy_id' : 'galaxy_id',
'halo_id': 'target_halo_id',
'halo_mass': (lambda x: x/self.cosmology.h, 'target_halo_mass'),
'stellar_mass': 'obs_sm',
'position_x': (lambda x: x/self.cosmology.h, 'x'),
'position_y': (lambda x: x/self.cosmology.h, 'y'),
'position_z': (lambda x: x/self.cosmology.h, 'z'),
'velocity_x': 'vx',
'velocity_y': 'vy',
'velocity_z': 'vz',
'is_central': (lambda x: x == -1, 'upid'),
}
# add magnitudes
for band in 'gri':
quantity_modifiers['Mag_true_{}_sdss_z0'.format(band)] = 'restframe_extincted_sdss_abs_mag{}'.format(band)
quantity_modifiers['Mag_true_{}_lsst_z0'.format(band)] = 'restframe_extincted_sdss_abs_mag{}'.format(band)
return quantity_modifiers
class BaseDC2ShearCatalog(BaseDC2GalaxyCatalog):
"""
BaseDC2 shear catalog reader, inherited from BaseDC2GalaxyCatalog
"""
@staticmethod
def _generate_quantity_modifiers():
quantity_modifiers = {
'ra': 'ra_lensed',
'dec': 'dec_lensed',
'convergence': 'conv',
'magnification': (
_calc_mag,
'conv',
'shear_1',
'shear_2',
),
'shear_2_treecorr': 'shear_2',
'shear_2_phosim': (np.negative, 'shear_2'),
'shear_1': 'shear_1',
}
return quantity_modifiers
class CosmoDC2AddonCatalog(CosmoDC2ParentClass):
def _get_group_names(self, fh): # pylint: disable=W0613
return [self.get_catalog_info('addon_group')]