[daip] VPLOT model plotting

[Leonia Kogan]

Shami,

It looks rather strange and I can not answer you right away.
Have you tried SOLINT>>0.1 (say SOLINT=1)?
Does the problem appear at all baseline?

To say more I need the fits files of the UV data and model.

Can you prepare for me a short version of your UV data (say 1 baseline).

While I fix the problem you can use NMAPS=-1. This option draws the model 
everywhere including the gaps between the data, although the accuracy of the 
model calculation is not as good as with NMAPS=1. But it can be enough at 
many cases


Leonia

----- Begin Included Message -----

>From owner-daip at kochab.cv.nrao.edu Mon Dec 11 12:56 MST 2000
Date: Mon, 11 Dec 2000 14:51:58 -0500 (EST)
From: Shami Chatterjee <shami at spacenet.tn.cornell.edu>
X-Sender: shami at monk
To: daip at cv3.cv.nrao.edu
Subject: [daip] VPLOT model plotting 
MIME-Version: 1.0
Sender: owner-daip at kochab.cv.nrao.edu
Precedence: bulk
X-Lines: 49
Status: RO

Hi: 
VPLOT's model plotting feature shows some inconsistency bteween 
solint =0 / >0 and nmaps =1 / =-1. 

With the combination solint = 0.1 (say) and nmaps =1, it plots the
model over the data only for the first few time samples; but changing
nmaps to -1 or solint to 0 (or both) plots the model over the entire
timerange. 

This might be a trivial bug, or a feature that I do not understand. 

Sample inputs:

AIPS 1: INNAME     'B1929-104A  '          Input UV file name (name)
AIPS 1: INCLASS    'CLIP  '                Input UV file name (class)
AIPS 1: INSEQ         1                    Input UV file name (seq. #)
AIPS 1: INDISK        8                    Input UV file disk unit #
AIPS 1: IN2NAME    'B1929-104A  '          Input CC file name (name)
AIPS 1: IN2CLASS   'ICL001'                Input CC file name (class)
AIPS 1: IN2SEQ        1                    Input CC file name (seq. #)
AIPS 1: IN2DISK       8                    Input CC file disk unit #
AIPS 1: IN2VERS       0                    Input CC file version #
AIPS 1: NCOMP      *all 0                  # comps to use for model.
AIPS 1: FLUX          0                    Lowest CC component used.
AIPS 1: NMAPS         1                    # clean maps(fields).
                   (or -1)
AIPS 1: SOURCES    'J1928+0848      '      Source list
AIPS 1: BIF           1                    Lowest IF number 0=>1
AIPS 1: EIF           1                    Highest IF number 0=>BIF
AIPS 1: XINC          1                    Plot every XINC'th visibility
AIPS 1: SOLINT        0.1                  Time over which to average
                    (or 0)
AIPS 1: OPTYPE     '    '                  Select CROSS or AUTO
AIPS 1: APARM      *all 0                  Control parameters
AIPS 1: BPARM      *all 0                  Control parameters

I'm running aips 31DEC00 on the midnight job.

Please let me know if further information might help, or if I've
misunderstood the meaning of NMAPS.
Thanks,
Shami
-----------------------------------------------------------
 Shami Chatterjee       http://www.aoc.nrao.edu/~schatter/
 518 Space Sciences     
 Cornell University     Phone: (607) 255 9020
 Ithaca NY 14853        Fax  : (607) 255 8803
-----------------------------------------------------------



----- End Included Message -----