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-rwxr-xr-xastro/fits/fitscube.py30
1 files changed, 27 insertions, 3 deletions
diff --git a/astro/fits/fitscube.py b/astro/fits/fitscube.py
index 7c30783..a297662 100755
--- a/astro/fits/fitscube.py
+++ b/astro/fits/fitscube.py
@@ -217,9 +217,28 @@ def cmd_info(args):
print("Slice positions: %s <-> %s%s" %
(zvalues.min(), zvalues.max(), pzunit))
if args.meanstd:
- print("Slice <z> <mean> +/- <std>:")
- for z, image in zip(zvalues, cube.slices):
- print("* %s %s %s" % (z, np.mean(image), np.std(image)))
+ mean = np.zeros(cube.nslice)
+ std = np.zeros(cube.nslice)
+ if args.center:
+ print("Central spatial box size: %d" % args.center)
+ rows, cols = cube.height, cube.width
+ rc, cc = rows//2, cols//2
+ cs1, cs2 = args.center//2, (args.center+1)//2
+ for i, image in enumerate(cube.slices):
+ data = image[(rc-cs1):(rc+cs2), (cc-cs1):(cc+cs2)]
+ mean[i] = np.mean(data)
+ std[i] = np.std(data)
+ else:
+ for i, image in enumerate(cube.slices):
+ mean[i] = np.mean(image)
+ std[i] = np.std(image)
+ print("Slice <z> <mean> +/- <std>:")
+ for i, z in enumerate(zvalues):
+ print("* %12.4e: %-12.4e %-12.4e" % (z, mean[i], std[i]))
+ if args.outfile:
+ data = np.column_stack([zvalues, mean, std])
+ np.savetxt(args.outfile, data, header="z mean std")
+ print("Saved mean/std data to file: %s" % args.outfile)
def cmd_create(args):
@@ -245,9 +264,14 @@ def main():
help="additional help")
# sub-command: "info"
parser_info = subparsers.add_parser("info", help="show FITS cube info")
+ parser_info.add_argument("-c", "--center", dest="center", type=int,
+ help="crop the central box region of specified " +
+ "size to calculate the mean/std.")
parser_info.add_argument("-m", "--mean-std", dest="meanstd",
action="store_true",
help="calculate mean+/-std for each slice")
+ parser_info.add_argument("-o", "--outfile", dest="outfile",
+ help="outfile to save mean/std values")
parser_info.add_argument("infile", help="FITS cube filename")
parser_info.set_defaults(func=cmd_info)
# sub-command: "create"