[daip] Re: SPFLG

[Eric Greisen]

Kevin Marvel writes:
 > Subject: aips_gripe
 > 
 > {24-JUL-2001 20:11:40}
 > {kevin        KEVIN}
 > { 1550  31DEC01  LINX}
 > {Kevin B. Marvel}
 > {marvel at aas.org}
 > {202-328-2010}
 > {I am attempting to use SPFLG to edit spectral line VLBI data and have
 >  encountered an error, which is not easily characterized.
 >  The data is a simple data set with R and L polarizations, 256 spectral
 >  channels, 6 second integrations.  There are four timeranges of data,
 >  split by a day break.  All other calibration steps and tasks I normally
 >  perform/use (SETJY, BPASS, CVEL, FXPOL, POSSM, FRING, VPLOT) appear to work
 >  just fine.  When I run SPFLG on the dataset with very default parameters,
 >  no data selection, no control parameters set etc., just STOKES='I'
 >  and FLAGVER = 1, SPFLG appears to create a grid file correctly but
 >  when it displays the data on the TV, it shows only one integration period
 >  in grayscale (per baseline, always the same time) but does not display the
 >  rest of the data in grayscale although a fraction of it is "seen" by running
 >  the cursor over the data in flag pixel mode.
 >  I am unsure how to characterize this further as no error messages appear.
 >  I am running RedHat 7.1.  All other tasks appear to work fine.
 >   }
 > {SPFLG Doesn't display all data for simple VLBA spectral line dataset.}
 > {marvel at aas.org}
 > {Have you tried TVTRANSF?  Sometimes 1 source is so much stronger
than the rest that they seem invisible.  I normally set STOKES=''; and
would set DPARM(6) to 6 seconds.  In this RedHat 7.1, what compiler
did you use?}