Changeset 273 for trunk

Timestamp:

01/24/05 01:01:04 (20 years ago)

Author:

kil064

Message:

add arg. 'reftime' to function 'align'

File:

• trunk/python/asapmath.py (modified) (1 diff)

trunk/python/asapmath.py

@@ -197 +197 @@
         return
         
-def align(scan, insitu=None):
+def align(scan, reftime=None, insitu=None):
     """
         Return a scan where all rows have been aligned in velocity. The
         velocity reference frame (e.gh. LSRK), unit and doppler (e.g. OPTICAL)
-        are those set by functions  set_unit and set_freqframe.  The data 
-        are aligned to the velocity abcissa at the first time present in the data.
-        scan:        a scantable
-        insitu:      if False a new scantable is returned.
-                     Otherwise, the scaling is done in-situ
-                     The default is taken from .asaprc (False)
-    """
+        are those set by functions  set_unit and set_freqframe.  
+        scan:        a scantable
+        reftime:     reference time to align at. By default, the time of
+                     the first row of data is used.  
+        insitu:      if False a new scantable is returned.
+                     Otherwise, the scaling is done in-situ
+                     The default is taken from .asaprc (False)
+    """
+    if reftime is None: reftime = ''
     if insitu is None: insitu = rcParams['insitu']
     if not insitu:
         from asap._asap import align as _align
-        return scantable(_align(scan))
+        return scantable(_align(scan, reftime))
     else:
         from asap._asap import align_insitu as _align
-        _align(scan)
+        _align(scan, reftime)
         return