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mockimgs_sb_addfields
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Sun, Jan 5, 18:03

mockimgs_sb_addfields
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#!/usr/bin/python3
import argparse
import numpy as np
from pNbody import *
####################################################################
# option parser
####################################################################
description=""
epilog =""""""
parser = argparse.ArgumentParser(description=description,epilog=epilog,formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument(action="store",
dest="files",
metavar='FILE',
type=str,
default=None,
nargs='*',
help='a file name')
parser.add_argument("-o",
action="store",
type=str,
dest="outputfilename",
default=None,
help="Name of the output file")
parser.add_argument("--ref",
action="store",
type=str,
dest="ref",
default=None,
help="Name of the reference file")
parser.add_argument("--minAge",
action="store",
dest="minAge",
metavar='FLOAT',
type=float,
default=None,
help='minAge')
parser.add_argument("--maxAge",
action="store",
dest="maxAge",
metavar='FLOAT',
type=float,
default=None,
help='maxAge')
parser.add_argument("--nngb",
action="store",
type=int,
dest="nngb",
default=5,
help="Number of neighbouring particles to consider to compute RSP(==HSML)")
parser.add_argument("--do_not_compute_ages",
action="store_true",
default=False,
help="do not compute ages")
parser.add_argument("--do_not_compute_rsp",
action="store_true",
default=False,
help="do not compute rsp")
parser.add_argument("--ftype",
action="store",
type=str,
dest="ftype",
default="arepo",
help="type of file")
parser.add_argument('--shift',
dest="shift",
action='store_true',
default=False,
help='shift')
####################################################################
# main
####################################################################
if __name__ == '__main__':
opt = parser.parse_args()
if opt.ref is not None:
nbref = Nbody(opt.ref)
if opt.minAge is not None:
opt.minAge = opt.minAge/1e3 # to Gyr
nbref = nbref.selectc(nbref.age>opt.minAge)
if opt.maxAge is not None:
opt.maxAge = opt.maxAge/1e3 # to Gyr
nbref = nbref.selectc(nbref.age<opt.maxAge)
for f in opt.files:
nb = Nbody(f,ftype=opt.ftype)
nb = nb.select("stars")
if opt.ref is not None:
# generate
idx = np.random.randint(low=0,high=nbref.nbody-1,size=nb.nbody)
nb.age = nbref.age[idx]
nb.mh = nbref.mh[idx]
else:
# generate ages (in Myr)
opt.minAge = 5500
opt.maxAge = 13500
nb.age = np.random.uniform(opt.minAge,opt.maxAge,nb.nbody)/1e3 # in Myr
# generate metallicities
opt.minFe = -3
opt.maxFe = -2
nb.mh = np.random.uniform(opt.minFe,opt.maxFe,nb.nbody)
###################################
# compute Hsml
###################################
if opt.do_not_compute_rsp is False:
print("Compute Rsp...")
#nb.set_tpe(0)
#nb.InitSphParameters(DesNumNgb=32, MaxNumNgbDeviation=2)
#nb.getTree()
#nb.rsp = nb.get_rsp_approximation()
#nb.set_tpe(4)
nb.ComputeRsp(opt.nngb)
print("done.")
# shift
if opt.shift:
nb.translate(-nb.boxsize/2)
if opt.outputfilename:
nb.rename(opt.outputfilename)
nb.write()

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