Source code for ytree.frontends.ahf.fields

"""
AHFArbor fields



"""

#-----------------------------------------------------------------------------
# Copyright (c) ytree development team. All rights reserved.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------

import numpy as np

from ytree.data_structures.fields import \
    FieldInfoContainer

m_unit = "Msun/h"
p_unit = "kpc/h"
v_unit = "km/s"

id_type = np.int64

[docs] class AHFFieldInfo(FieldInfoContainer): known_fields = ( ("Mvir", m_unit), ("Xc", p_unit), ("Yc", p_unit), ("Zc", p_unit), ("VXc", v_unit), ("VYc", v_unit), ("VZc", v_unit), ("Rvir", p_unit), ("Rmax", p_unit), ("r2", p_unit), ("mbp_offset", p_unit), ("com_offset", p_unit), ("Vmax", v_unit), ("v_esc", v_unit), ("sigV", v_unit), ("Ekin", "Msun/h * (km/s)**2"), ("Epot", "Msun/h * (km/s)**2"), ("SurfP", "Msun/h * (km/s)**2"), ("Phi0", "(km/s)**2"), ) alias_fields = ( ("halo_id", "ID", ""), ("mass", "Mvir", m_unit), ("virial_mass", "Mvir", m_unit), ("position_x", "Xc", p_unit), ("position_y", "Yc", p_unit), ("position_z", "Zc", p_unit), ("velocity_x", "VXc", v_unit), ("velocity_y", "VYc", v_unit), ("velocity_z", "VZc", v_unit), ("virial_radius", "Rvir", p_unit), ("velocity_dispersion", "sigV", v_unit), ("spin_parameter", "lambda", ""), ("kinetic_energy", "Ekin", "Msun/h * (km/s)**2"), ("potential_energy", "Epot", "Msun/h * (km/s)**2"), ) data_types = ( ('ID', id_type), ('desc_id', id_type), ('uid', id_type), ('desc_uid', id_type) )
class AHFNewFieldInfo(AHFFieldInfo): alias_fields = ( ("uid", "ID", ""), ("desc_uid", "desc_id", ""), ("mass", "Mvir", m_unit), ("virial_mass", "Mvir", m_unit), ("position_x", "Xc", p_unit), ("position_y", "Yc", p_unit), ("position_z", "Zc", p_unit), ("velocity_x", "VXc", v_unit), ("velocity_y", "VYc", v_unit), ("velocity_z", "VZc", v_unit), ("virial_radius", "Rvir", p_unit), ("velocity_dispersion", "sigV", v_unit), ("spin_parameter", "lambda", ""), ("kinetic_energy", "Ekin", "Msun/h * (km/s)**2"), ("potential_energy", "Epot", "Msun/h * (km/s)**2"), )