[daip] BLAPP behaviour

[Eric Greisen]

Arnaud Collioud wrote:
> Dear AIPS developers,
> 
> I am using the task BLAPP to read baseline-based residuals produced by MK4IN. I use the following parameters:
> 
>> inp
> AIPS 1: BLAPP     Task which applies baseline corrections to CL tables.
> AIPS 1: Adverbs     Values                 Comments
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: INNAME     'IYA09_2_X'             Input UV file name (name)
> AIPS 1: INCLASS    'UV'                    Input UV file name (class)
> AIPS 1: INSEQ         1                    Input UV file name (seq. #)
> AIPS 1: INDISK        1                    Input UV file disk unit #
> AIPS 1: INVERS        1                    Input BS table version number
> AIPS 1: SOURCES    *all ' '                Source list ' '=>all.
> AIPS 1: STOKES     ' '                     Stokes type to process
> AIPS 1: SELBAND      -1                    Bandwidth to select (kHz)
> AIPS 1: SELFREQ      -1                    Frequency to select (MHz)
> AIPS 1: FREQID        1                    Freq. ID to select.
> AIPS 1: TIMERANG   *all 0                  Time range to use.
> AIPS 1: ANTENNAS   *all 0                  Antennas to correct.
> AIPS 1: SUBARRAY      1                    Subarray; 0 => 1.
> AIPS 1: REFANT       14                    Reference antenna
> AIPS 1: ANTWT      *all 0                  Antenna weights: 0.0 => 1.0
> AIPS 1: OPCODE     'MK4'                   Operation code:
> AIPS 1:                                     'SOLV' - produce solutions
> AIPS 1:                                     'CAL ' - update calibration
> AIPS 1:                                     'MK4 ' - MK4IN BS-table
> AIPS 1: GAINVER       2                    Input CL table: 0 => 1
> AIPS 1: GAINUSE       3                    Output CL table: 0 => 2
> AIPS 1: BADDISK    *all 0                  List of disks not to be used
> AIPS 1:                                    for scratch
> 
> 
> But I got the following error: 
> 
> macpco> BLAPP1: Task BLAPP  (release of 31DEC11) begins
> macpco> BLAPP1: FQMATC: Setting FQ id number =    1
> macpco> BLAPP1: Doing no flagging this time
> macpco> BLAPP1: Writing SN table version   7
> macpco> BLAPP1: DID NOT FIND ANY SOLUTIONS
> macpco> BLAPP1: Purports to die of UNNATURAL causes
> macpco> BLAPP1: localhos 31DEC11 TST: Cpu=      0.7  Real=      2  IO=       132
> 
> I have not idea of what is happening here because I do not know how the task BLAPP works. Can you help me to figure this out ?
> 

I have little idea what BLAPP does either.  This message suggests that 
it found no data for some reason in the BS table.  Are there data rows 
in the BS table (use PRTAB) and do they apply to the source for which 
you ran BLAPP?

I may have to get these data to look at the task with the debugger...

Eric Greisen