mirror of
https://github.com/Richard-Sti/csiborgtools.git
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116 lines
4.2 KiB
Python
116 lines
4.2 KiB
Python
# Copyright (C) 2023 Richard Stiskalek
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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"""
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"""
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from argparse import ArgumentParser
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from datetime import datetime
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from os.path import join
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from warnings import warn
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import csiborgtools
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import numpy as np
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from astropy.coordinates import SkyCoord
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from mpi4py import MPI
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from taskmaster import work_delegation
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from utils import get_nsims
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FDIR = "/mnt/extraspace/rstiskalek/csiborg_postprocessing/peculiar_velocity/observer" # noqa
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def t():
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return datetime.now()
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def read_velocity_field(args, nsim):
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if args.simname == "csiborg1":
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reader = csiborgtools.read.CSiBORG1Field(nsim)
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return reader.velocity_field("SPH", 1024)
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elif "csiborg2" in args.simname:
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kind = args.simname.split("_")[-1]
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reader = csiborgtools.read.CSiBORG2Field(nsim, kind)
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return reader.velocity_field("SPH", 1024)
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elif args.simname == "Carrick2015":
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folder = "/mnt/extraspace/rstiskalek/catalogs"
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warn(f"Using local paths from `{folder}`.", RuntimeWarning)
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fpath = join(folder, "twompp_velocity_carrick2015.npy")
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field = np.load(fpath).astype(np.float32)
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# Because the Carrick+2015 data is in the following form:
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# "The velocities are predicted peculiar velocities in the CMB
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# frame in Galactic Cartesian coordinates, generated from the
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# \(\delta_g^*\) field with \(\beta^* = 0.43\) and an external
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# dipole \(V_\mathrm{ext} = [89,-131,17]\) (Carrick et al Table 3)
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# has already been added.""
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field[0] -= 89
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field[1] -= -131
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field[2] -= 17
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field /= 0.43
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return field
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else:
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raise ValueError(f"Unknown simname: `{args.simname}`.")
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def main(smooth_scales, nsim, args):
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velocity_field = read_velocity_field(args, nsim)
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boxsize = csiborgtools.simname2boxsize(args.simname)
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if smooth_scales is None:
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smooth_scales = [0]
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smooth_scales = np.asanyarray(smooth_scales) / boxsize
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vobs = csiborgtools.field.observer_peculiar_velocity(
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velocity_field, smooth_scales=smooth_scales, observer=None,
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verbose=False)
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# For Carrick+2015 the velocity vector is in the Galactic frame, so we
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# need to convert it to RA/dec
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if args.simname == "Carrick2015":
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coord = SkyCoord(vobs, unit='kpc', frame='galactic',
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representation_type='cartesian').transform_to("icrs")
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vobs = coord.cartesian.xyz.value.T
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fname = join(FDIR, f"{args.simname}_{nsim}_observer_velocity.npz")
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print(f"Saving to `{fname}`.")
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np.savez(fname, vobs=vobs, smooth_scales=smooth_scales * boxsize)
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###############################################################################
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# Main & command line interface #
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###############################################################################
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if __name__ == "__main__":
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parser = ArgumentParser()
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parser.add_argument("--simname", type=str, help="Simulation name.",
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choices=["csiborg1", "csiborg2_main", "csiborg2_varysmall", "csiborg2_random", "Carrick2015"]) # noqa
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args = parser.parse_args()
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args.nsims = [-1]
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comm = MPI.COMM_WORLD
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smooth_scales = [0, 0.5, 1.0, 2.0, 4.0, 40.0]
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paths = csiborgtools.read.Paths(**csiborgtools.paths_glamdring)
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nsims = get_nsims(args, paths)
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def main_(nsim):
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main(smooth_scales, nsim, args)
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work_delegation(main_, nsims, comm, master_verbose=True)
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comm.Barrier()
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if comm.Get_rank() == 0:
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print("All finished.", flush=True)
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