diff options
| -rwxr-xr-x | astro/fits/fitscube.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/astro/fits/fitscube.py b/astro/fits/fitscube.py index f9701e2..5616c2d 100755 --- a/astro/fits/fitscube.py +++ b/astro/fits/fitscube.py @@ -12,6 +12,7 @@ import os import sys import argparse from datetime import datetime, timezone +from functools import lru_cache import numpy as np from astropy.io import fits @@ -114,6 +115,7 @@ class FITSCube: pass @property + @lru_cache() def wcs(self): w = WCS(naxis=3) w.wcs.ctype = ["pixel", "pixel", "pixel"] @@ -156,6 +158,7 @@ class FITSCube: return ns @property + @lru_cache() def zvalues(self): """ Calculate the Z-axis positions for all slices @@ -168,6 +171,13 @@ class FITSCube: return world[:, 2] @property + def slices(self): + """ + A list of slices in the cube w.r.t. ``zvalues``. + """ + return (self.data[i, :, :] for i in range(self.nslice)) + + @property def unit(self): """ Data cube unit. @@ -206,6 +216,10 @@ def cmd_info(args): print("Slice step/spacing: %s%s" % (cube.zstep, pzunit)) 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))) def cmd_create(args): @@ -231,6 +245,9 @@ def main(): help="additional help") # sub-command: "info" parser_info = subparsers.add_parser("info", help="show FITS cube info") + parser_info.add_argument("-m", "--mean-std", dest="meanstd", + action="store_true", + help="calculate mean+/-std for each slice") parser_info.add_argument("infile", help="FITS cube filename") parser_info.set_defaults(func=cmd_info) # sub-command: "create" |