From e460f3041942da8dbde7fb5576fc1eb838edf98a Mon Sep 17 00:00:00 2001 From: teald Date: Tue, 17 Dec 2024 16:03:47 -0800 Subject: [PATCH] chore(dragons): Add commit from DRAGONS in WCS Updates wcs to handle multiple undefined axes. --- astrodata/wcs.py | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/astrodata/wcs.py b/astrodata/wcs.py index 239aa302..6643cc7b 100644 --- a/astrodata/wcs.py +++ b/astrodata/wcs.py @@ -690,8 +690,17 @@ def read_wcs_from_header(header): crval = [] cdelt = [] + # Handle more than 1 undefined (i.e., not CTYPEi) axis + untyped_axes = 0 for i in range(1, wcsaxes + 1): - ctype.append(header.get(f"CTYPE{i}", "LINEAR")) + try: + this_ctype = header[f"CTYPE{i}"] + + except KeyError: + this_ctype = f"LINEAR{untyped_axes+1 if untyped_axes else ''}" + untyped_axes += 1 + + ctype.append(this_ctype) cunit.append(header.get(f"CUNIT{i}", None)) crpix.append(header.get(f"CRPIX{i}", 0.0)) crval.append(header.get(f"CRVAL{i}", 0.0))