[daip] problem with 31DEC11 on MacBook Pro

[Eric Greisen]

Deidre Hunter wrote:
> I have recently brought 31DEC11 up on a new MacBook Pro (2.7 GHz Intel Core i7) running MacOSX 10.6.8 (snow leopard). On the surface AIPS seems to be running, but when I try to run a task, in this case a simple imlod, I encounter a very strange behavior. 
> 
> First, the input values, instead of being 1 are .99:. I can enter 0s OK, but not 1s. Similarly, entering a value of 2 becomes 1.99:. 
> 
> AIPS 1: IMLOD:  Task to store an image from a FITS or IBM-CV tape
> AIPS 1: Adverbs     Values                 Comments
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: INTAPE         .99:                Input tape drive # (0 => 1)
> AIPS 1: OUTNAME    'N1569NA'               Image name (name)
> AIPS 1: OUTCLASS   'XMOM0'                 Image name (class)
> AIPS 1: OUTSEQ        0                    Image name (seq. #)
> AIPS 1:                                       0 => highest unique number
> AIPS 1:                                      -1 => FITS tape value
> AIPS 1: OUTDISK        .99:                Disk drive # (0 => any)
> AIPS 1: NCOUNT        0                    Number of files to load.
> AIPS 1: DOTABLE        .99:                True (1.0) means load tables
> AIPS 1: NFILES        0                    # of files to advance on tape
> AIPS 1: NMAPS         0                    # IBM maps to advance on tape
> AIPS 1: DATAIN     '/ta/n1569/NGC1569_NA_X Disk file name (FITS only)
> AIPS 1:            MOM0.FITS'
> AIPS 1: ERROR         0                    >= 2 -> do not use AIPS
> AIPS 1:                                    history in the FITS file
> 
> Second, some of the header values of the moment0 map that I loaded in the above example have :s in them:
> 
> AIPS 1: Image=NGC1569   (MA)         Filename=N1569NA     .XMOM0 .   1
> AIPS 1: Telescope=VLA                Receiver=VLA
> AIPS 1: Observer=AW605               User #=    2
> AIPS 1: Observ. date=06-SEP-1992     Map date=12-MAY-2010
> AIPS 1: Minimum=-1.596477:8E+01      Maximum= 3.83459:83E+02 JY/B*M/S
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
> AIPS 1: RA---SIN  2048    04 30 50.482    1024.00         -1.500     .00
> AIPS 1: DEC--SIN  2048    64 50 47.520    1025.00          1.500    -.5:
> AIPS 1: STOKES       1   0.0000000E+00       1.00  0.0000000E+00     .00
> AIPS 1: FELO-HEL     1  -8.9999:00E+04        .99 -2.754:241E+05     .00
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Coordinate equinox 199:.00
> AIPS 1: Map type=NORMAL              Number of iterations=   25282
> AIPS 1: Conv size=   7.71 X   7.04   Position angle=  16.50
> AIPS 1: Rest freq   1420.406         Vel type: OPTICAL wrt SUN
> AIPS 1: Alt ref. value  1.42012E+09  wrt pixel   -8.9:
> AIPS 1: Maximum version number of extension files of type HI is   1
> AIPS 1: Keyword = 'CCFLUX  '  value =  1.802657E-02
> AIPS 1: Keyword = 'CCTOTAL '  value =  1.802657E-02
> AIPS 1: Keyword = 'PARANGLE'  value = -1.789969E+02
> AIPS 1: Keyword = 'ZENANGLE'  value =  2.:87822E+01
> 
> I don't even know where to start with this problem. 
> 
> Deidre Hunter
> 
> P.S. I apologize for not using the my.nrao.edu helpdesk, but when I try to login to the helpdesk, I get a blank screen. 
> 
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Numbers like 1.0 and 2.0 have exact representations in IEEE floating 
point used by Intel chips.  Furthermore, formatting routines cannot 
produce colons in the middle of characters.  I am thinking that there 
has to be hardware problems with your new computer.  What happens if you 
run a task despite the odd output of the INPUTS verb?

Does TVLOD and TVFIDDLE (TVALL) work?

Eric Greisen