[daip] VPLOT (with solint=0)

[Z.-Q. Shen]

Hi,

I found that if I set solint=0, i.e., no time averaging at all, it works.
One may think that the different time label occurred sometimes after
the averaging may cause the mismatch between different polarizations.
By checking the data without averaging (using uvprt for example), I
found actually that LCP and RCP don't always appear simultaneously.
So, such kind of problem of mismatch is there before time averaging.
So, I still don't understand this yet. I think a time averaging probably
makes a lot of sense.

Alternatively, I ran UVAVG first to generate a new fits file and then
VPLOT. It is no problem.

Cheers,
Zhiqiang Shen


>Date: Wed, 8 May 2002 11:18:29 +0900
>To: daip at nrao.edu
>From: "Z.-Q. Shen" <zshen at vsop.isas.ac.jp>
>Subject: VPLOT
>
>Hi,
>
>I have a question to AIPS task VPLOT. It is said that with the option
>POLPLOT = 'LL/RR', we can display the ratio of LCP to RCP. But it
>didn't work for me. It always showed the total intensity  (RCP)
>instead of the ratio. I wonder if there are any other parameters I
>should set for. (The data have all four stokes. And I can plot LCP
>and RCP, separately. )
>
>Thanks,
>
>Zhiqiang Shen