[daip] tvall

Miller Goss mgoss at aoc.nrao.edu
Fri Mar 8 12:57:20 EST 2002


I have a 4 K image . This is Orion in the A array at 8 GHz. 
the beam is 0.3 by 0.2 arc sec.  The header is



AIPS 1: Image=ORION     (MA)         Filename=ORION-LINCO .ICL001.   6
AIPS 1: Minimum=  -0.3204            Maximum=  12.9326 MilliJY/BEAM
AIPS 1: --------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value  at Pixel    Coord incr   Rotat
AIPS 1: RA---SIN  4096    05 35 16.019    2048     -0.100000    0.00
AIPS 1: DEC--SIN  4096   -05 22 59.668    2048*     0.100000    0.00
AIPS 1: FREQ         1    8.441462E+09       1    3.7500E+07    0.00
AIPS 1: STOKES       1    IPOL               1        1.0000    0.00
AIPS 1: --------------------------------------------------------------
AIPS 1: Map type=NORMAL              Number of iterations=   10000
AIPS 1: Conv size= 0.28372 X 0.21829   Position angle=  46.72
AIPS 1: Max ext file #: CC   2    HI   1
AIPS 1: * => NOT the formal reference pixel on this axis
>


I run TVAL or TVLO and it is happy for TYIN 1 TXINC 1 or
4 , or 8 .  For TYIN 8 I can view the entire  image.

But for TYIN 2 TXIN 2 I get the following



>typ tyin
AIPS 1:      2
>typ txin
AIPS 1:      2
>tvlo
AIPS 1: YIMGIO: OP,CHAN,NPIX,X,Y,ANGL ERROR: WRIT   1 1390    1  951  0
AIPS 1: TVLOAD: MDISK TV I/O ERROR =     2
AIPS 1: TV PROBLEM
>


An image is loaded  however.

and for TYIN 4 etc here are the results :


>tyin 4
>txin 4
>tvlo


ie no error.

Thanks

Miller

ps- this is on my laptop with the large addtional DELL display .
Eric did fix the TVPL problem the other day and that has 
been no problem since then.Thanks.





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