[daip] Re: Changes to FXPOL

[Tony Beasley]

Chris, surely a simple relabelling does not need to make another copy of the
data? I am assuming the disk space is only needed in complex situations where
data has to be moved around. pls. advise. Tony


Chris Flatters wrote:
> 
> The next midnight job for 31DEC99 will replace FXPOL with a version that
> can  handle  a  greater  variety  of  polarization   labeling   schemes
> (including  Mk4 setups that  assign  odd-numbered  bands to LCP and even
> numbered bands to RCP).  The cost for the extra  flexibility is that you
> have to tell FXPOL what to do and that you will need  extra  disk  space
> for a copy of the original file.
> 
> If you have  users who  reduce  data from the VLBA  correlator  then you
> should make sure that they know about this change.  I suggest  including
> the following notice in your AIPS.MSG file.
> 
> <<date>>    FXPOL has been written to handle a greater variety of polarization
>             schemes. The new version requires you to specify how polarizations
>             are to be re-labeled and requires enough disk space to hold a
>             copy of the original file. Read the explain file before using the
>             new version of FXPOL for the first time.
> 
>         Chris Flatters
>         cflatter at nrao.edu