diff options
| -rwxr-xr-x | astro/fitscube.py | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/astro/fitscube.py b/astro/fitscube.py index c005e44..d6bc986 100755 --- a/astro/fitscube.py +++ b/astro/fitscube.py @@ -1,7 +1,7 @@ #!/usr/bin/env python3 # -# Copyright (c) 2017-2018 Weitian LI <wt@liwt.net> -# MIT license +# Copyright (c) 2017-2019 Weitian LI <wt@liwt.net> +# MIT License # """ @@ -32,6 +32,7 @@ imperfections. import os import sys +import re import argparse from datetime import datetime, timezone from functools import lru_cache @@ -310,13 +311,40 @@ def cmd_create(args): """ Sub-command: "create", create a FITS cube """ + def sorted_natural(l): + # Credit: https://stackoverflow.com/a/4623518 + + def _tryint(s): + try: + return int(s) + except ValueError: + return s + + def _alphanum_key(s): + return [_tryint(c) for c in re.split(r'([0-9]+)', s)] + + return sorted(l, key=_alphanum_key) + if not args.clobber and os.path.exists(args.outfile): raise FileExistsError("output file already exists: %s" % args.outfile) + + if args.sort: + infiles = sorted_natural(args.infiles) + else: + infiles = args.infiles + + N = len(infiles) + print("Input slices:") + for i, fn in enumerate(infiles): + print(" + [%2d/%2d] %s" % (i+1, N, fn)) + cube = FITSCube() - cube.add_slices(args.infiles, zbegin=args.zbegin, zstep=args.zstep) + print("Adding slices to cube ...") + cube.add_slices(infiles, zbegin=args.zbegin, zstep=args.zstep) cube.zunit = args.zunit if args.unit: cube.unit = args.unit + cube.write(args.outfile, clobber=args.clobber) print("Created FITS cube: %s" % args.outfile) @@ -641,6 +669,8 @@ def main(): help="Z-axis step/spacing between slices") parser_create.add_argument("-u", "--z-unit", dest="zunit", help="Z-axis unit (e.g., cm, Hz)") + parser_create.add_argument("-S", "--sort", action="store_true", + help="Sort input files naturally") parser_create.add_argument("-o", "--outfile", dest="outfile", required=True, help="output FITS cube filename") |