diff options
| -rwxr-xr-x | astro/fits/fitscube.py | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/astro/fits/fitscube.py b/astro/fits/fitscube.py index 720e169..3eb6999 100755 --- a/astro/fits/fitscube.py +++ b/astro/fits/fitscube.py @@ -362,6 +362,31 @@ def cmd_add(args): print("Saved FITS cube: %s" % args.outfile) +def cmd_mul(args): + """ + Sub-command: "mul", multiply two or more FITS cubes + """ + if not args.clobber and os.path.exists(args.outfile): + raise FileExistsError("output file already exists: %s" % args.outfile) + if len(args.infiles) < 2: + raise RuntimeError("Two or more input FITS cubes required") + + cube = FITSCube(args.infiles[0]) + print("Data cube unit: %s" % cube.unit) + print("Image/slice size: %dx%d" % (cube.width, cube.height)) + print("Number of slices: %d" % cube.nslice) + + for f in args.infiles[1:]: + cube2 = FITSCube(f) + assert (cube.unit, cube.zunit) == (cube2.unit, cube2.zunit) + print("Multiplying cube %s ..." % f) + cube.data = cube.data * cube2.data + + print("Saving FITS cube ...") + cube.write(args.outfile, clobber=args.clobber) + print("Saved FITS cube: %s" % args.outfile) + + def cmd_sub(args): """ Sub-command: "sub", subtract one FITS cube by another one @@ -626,6 +651,18 @@ def main(): help="two or more input FITS cubes") parser_add.set_defaults(func=cmd_add) + # sub-command: "multiply" + parser_mul = subparsers.add_parser( + "mul", aliases=["multiply"], + help="multiply one FITS cube by another one") + parser_mul.add_argument("-C", "--clobber", action="store_true", + help="overwrite existing output file") + parser_mul.add_argument("-o", "--outfile", required=True, + help="output FITS cube filename") + parser_mul.add_argument("-i", "--infiles", nargs="+", required=True, + help="two or more input FITS cubes") + parser_mul.set_defaults(func=cmd_mul) + # sub-command: "subtract" parser_sub = subparsers.add_parser( "sub", aliases=["subtract"], |