Changeset 798 for branches/Release12/python

Timestamp:

12/22/05 11:55:22 (18 years ago)

Author:

phi196

Message:

Added swap_pol & invert_phase

Location:

branches/Release12/python

Files:

• __init__.py (modified) (1 diff)
• scantable.py (modified) (1 diff)

branches/Release12/python/__init__.py

@@ -353 +353 @@
             rotate_linpolphase - rotate the phase of the complex
                                  polarization O=Q+iU correlation
+            invert_phase    - take the complex conjugate of the cross correlation
+            swap_pol        - swap the order of the parallel polarisations
             freq_switch     - perform frequency switching on the data
             stats           - Determine the specified statistic, e.g. 'min'

branches/Release12/python/scantable.py

@@ -1268 +1268 @@
         return
 
+    def invert_phase(self, allaxes=None):
+        """
+        Take the complex conjugate of the complex polarisation cross
+        correlation.  This is always done in situ in the data.  If
+        you call this function twice, you end up with the original phase
+        Parameters:
+            allaxes: If True apply to all spectra. Otherwise
+                     apply only to the selected (beam/pol/if)spectra only.
+                     The default is taken from .asaprc (True if none)
+        Examples:
+            scan.invert_phase()
+        """
+        if allaxes is None: allaxes = rcParams['scantable.allaxes']
+        varlist = vars()
+        from asap._asap import _invert_phase
+        _invert_phase(self, allaxes)
+        self._add_history("invert_phase", varlist)
+        print_log()
+        return
+
+    def swap_ppol(self, allaxes=None):
+        """
+        Swaps the order of parallel polarisation products (ie AA, BB
+        becomes BB, AA) .  This is always done in situ in the data.
+        If you call this function twice, you end up with the original
+        order
+        Parameters:
+            allaxes: If True apply to all spectra. Otherwise
+                     apply only to the selected (beam/pol/if)spectra only.
+                     The default is taken from .asaprc (True if none)
+        Examples:
+            scan.swap_pol()
+        """
+        if allaxes is None: allaxes = rcParams['scantable.allaxes']
+        varlist = vars()
+        from asap._asap import _swap_pol
+        _swap_pol(self, allaxes)
+        self._add_history("swap_phase", varlist)
+        print_log()
+        return
+
 
     def add(self, offset, insitu=None, allaxes=None):