[daip] UVCOP question

[Eric Greisen]

Glenn Morrison writes:
 > Eric,
 > 
 > If I have UV data with clean components removed and I need to remove  
 > all points higher with clip (APRAM(1)=0.4;APRAM(2)=0.4), how do I  
 > know if these UV data point are removed?
 > 
 > The case in question shows points higher that 0.4Jy on UVPLT but no  
 > records being removed. From what you are saying below, if the "full"  
 > record is completely flagged it is drop but what if say IF=1  
 > STOKES='RR'  in Channels 3-6, have  points over 0.4Jy but the others  
 > do not? Are these high points removed but because the whole record is  
 > not being removed it is not reported?
 > 
If the flag tables syas to flag if 1 channel 3,4,5 at some time then
they are marked "bad" in UVCOP.  If channels 1,2,6,7 are not so marked
or IF 2 is okay or ... then the "sample" is still copied but those
channels should no longer appear in plots.  Having run CLIP at 0.4 Jy,
you should see no points above 0.4 Jy in UVPLT if you have done
everything correctly.  Note for example, if you docal=-1 in clip and
docal=+1 in uvplt all bets are off (or vice versa...)

Eric Greisen