From rmarson@aoc.nrao.edu Sun Nov  4 12:04:48 2001
Date: Fri, 02 Nov 2001 18:03:45 -0700
From: Ralph Marson <rmarson@aoc.nrao.edu>
To: aips2-naug@zia.aoc.NRAO.EDU
Subject: Re: msplot using X,Y plots 

Hi Everyone,
   A week has passed since Ed gave his report on msplot and I'd like
to tell you all where we are with his problems.

The problem of msplot taking far too long to copy the flags has been
looked at and the overall improvement in speed is now about a factor
of ten. I am finding that for a 3 million row measurement set (VLA
12hr mostly continuum observation) it takes 45secs to copy the flags.

Ed was able to reliably reproduce his flagging problem. This allowed
me to characterize the problem in more detail. The problem is in the
lower level ms tool and will, I expect, be fixed early next week. It
manifests itself whenever you select and flag data using some of the
available polarizations eg., flagging just RR LL from the full
set. The work around is to select and flag using just one polarization
or all four.

msplot has now been alpha tested on single dish measurement sets. I
encourage you all to try it on any measurement sets (synthesis or
single dish) that you may have around. The code freeze is the middle
of next week and at that point I will not be able to make any more
changes to msplot.

All severe msplot defects ie., severity one or two, have now been
resolved. So please send in some defects or I will be forced to write
some documentation (which is badly out of date)!

Cheers
	Ralph