From 8a93c569256e4b639ae82292d13d3b20b1dc804c Mon Sep 17 00:00:00 2001
From: Aaron LI <aly@aaronly.me>
Date: Fri, 18 Aug 2017 12:12:23 +0800
Subject: Remove "extract_slice.py", obsoleted by "make_lightcone.py"

---
 astro/21cm/extract_slice.py | 84 ---------------------------------------------
 1 file changed, 84 deletions(-)
 delete mode 100755 astro/21cm/extract_slice.py

diff --git a/astro/21cm/extract_slice.py b/astro/21cm/extract_slice.py
deleted file mode 100755
index 576b7ee..0000000
--- a/astro/21cm/extract_slice.py
+++ /dev/null
@@ -1,84 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (c) 2017 Weitian LI <weitian@aaronly.me>
-# MIT License
-#
-
-"""
-Extract a slice from the 21cm cube and save as FITS image.
-"""
-
-import os
-import sys
-import argparse
-
-import numpy as np
-import astropy.io.fits as fits
-
-
-def main():
-    outfile_default = "{prefix}_z{z:05.2f}_N{Nside}_L{Lside}_s{sidx}.fits"
-
-    parser = argparse.ArgumentParser(
-        description="Extract a slice from cube and save as FITS image")
-    parser.add_argument("-C", "--clobber", dest="clobber",
-                        action="store_true",
-                        help="overwrite existing files")
-    parser.add_argument("-d", "--dtype", dest="dtype", default="float32",
-                        help="NumPy dtype of data cubes (default: float32)")
-    parser.add_argument("-z", "--redshift", dest="redshift",
-                        type=float, required=True,
-                        help="redshift of the input data cube")
-    parser.add_argument("-L", "--len-side", dest="Lside",
-                        type=float, required=True,
-                        help="Side length of the cube [comoving Mpc]")
-    parser.add_argument("-s", "--slice-idx", dest="sidx",
-                        type=int, default=None,
-                        help="slice index to be extracted (default: "
-                        "the central slice)")
-    parser.add_argument("-u", "--unit", dest="unit",
-                        help="data unit (e.g., K, mK)")
-    parser.add_argument("-i", "--infile", dest="infile", required=True,
-                        help="input data cube")
-    parser.add_argument("-o", "--outfile", dest="outfile",
-                        default=outfile_default,
-                        help="output FITS image slice (default: %s)" %
-                        outfile_default)
-    parser.add_argument("-p", "--prefix", dest="prefix", required=True,
-                        help="prefix for the output FITS image")
-    args = parser.parse_args()
-
-    cube = np.fromfile(open(args.infile, "rb"), dtype=args.dtype)
-    Nside = round(cube.shape[0] ** (1.0/3))
-    print("Read cube: %s (Nside=%d)" % (args.infile, Nside))
-    if args.sidx is None:
-        sidx = int(Nside / 2.0)
-    elif args.idx >= 0 and args.idx < Nside:
-        sidx = args.idx
-    else:
-        raise ValueError("invalid slice index: %s" % args.sidx)
-    outfile = args.outfile.format(prefix=args.prefix, z=args.redshift,
-                                  Nside=Nside, Lside=args.Lside, sidx=sidx)
-    if os.path.exists(outfile) and not args.clobber:
-        raise OSError("output file already exists: %s" % outfile)
-
-    cube = cube.reshape((Nside, Nside, Nside))
-    simg = cube[:, :, sidx]
-    header = fits.Header()
-    header["REDSHIFT"] = args.redshift
-    header["Lside"] = (args.Lside, "Cube side length [comoving Mpc]")
-    header["Nside"] = (Nside, "Number of pixels on each cube side")
-    header["SliceIdx"] = (sidx, "Index of this extracted slice")
-    if args.unit:
-        header["BUNIT"] = (args.unit, "Data unit")
-    header.add_history(" ".join(sys.argv))
-    hdu = fits.PrimaryHDU(data=simg, header=header)
-    try:
-        hdu.writeto(outfile, overwrite=args.clobber)
-    except TypeError:
-        hdu.writeto(outfile, clobber=args.clobber)
-    print("Extracted #%d slice: %s" % (sidx, outfile))
-
-
-if __name__ == "__main__":
-    main()
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