[evlatests] Integer zeros slipping through?

Bill Cotton bcotton at nrao.edu
Thu Apr 28 13:43:36 EDT 2011


Rick,

   BDFIn still flags visibilities that are precisely zero (as float) unless 
you turn this off.

-Bill

"RP" == Rick Perley <rperley at nrao.edu> writes:

RP>     In continuing to troll through the 3C273 data taken a couple weeks 
RP> back, I find a curious problem that I thought had been dealt with long 
RP> ago. 

RP>     One some of the scans, there are what appear to be integer zeros, on 
RP> some baselines.  It's hard to prove these are pure integer zeros -- I 
RP> can only state for sure that these numbers are much less than 1e-20. 
RP>     The unique feature of these zeros is that they are all at the end of 
RP> the scans.  None in the middle, and none at the start. 
   
RP>     I had thought that the BDFin program automatically stripped out 
RP> integer zeros.  Is this no longer so?  Or perhaps my 'integer zeros' are 
RP> not quite integer zero? 

  
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