[daip] IRING question

[Glenn Morrison]

Hi Eric,

I'm using IRING and found a bit of odd behavior.

After setting the inner, outer radius (using only one ring in the  
example below) I find that the number of points making up the area  
under analysis varies. For the example below with an inner radius=0  
and outer=0.8", the area in pixels varies between 7-9 pixels. Why  
does this happen?

--Thanks

--Glenn









IRING1: Task IRING  (release of 31DEC05) begins
AIPS 1: Resumes
IRING1: Ring  Inner  Outer  Points    Average     Sigma     Cumul. Flux
IRING1:          (arcsec)             (JY/BEAM )  (JY/BEAM ) (JY      )
IRING1:   1      .0     .8       8     .1741E-05   .1456E-05   .1173E-05
IRING1: Appears to have ended successfully
IRING1: localhost    31DEC05 TST: Cpu=       1.4  Real=       2
AIPS 1: Task IRING   has finished
IRING1: Task IRING  (release of 31DEC05) begins
AIPS 1: Resumes
IRING1: Ring  Inner  Outer  Points    Average     Sigma     Cumul. Flux
IRING1:          (arcsec)             (JY/BEAM )  (JY/BEAM ) (JY      )
IRING1:   1      .0     .8       7     .2870E-05   .2829E-05   .1692E-05
IRING1: Appears to have ended successfully
IRING1: localhost    31DEC05 TST: Cpu=       1.4  Real=       2
AIPS 1: Task IRING   has finished
IRING1: Task IRING  (release of 31DEC05) begins
AIPS 1: Resumes
IRING1: Ring  Inner  Outer  Points    Average     Sigma     Cumul. Flux
IRING1:          (arcsec)             (JY/BEAM )  (JY/BEAM ) (JY      )
IRING1:   1      .0     .8       8     .6965E-06   .2362E-05   .4694E-06
IRING1: Appears to have ended successfully
IRING1: localhost    31DEC05 TST: Cpu=       1.4  Real=       2
AIPS 1: Task IRING   has finished
IRING1: Task IRING  (release of 31DEC05) begins
AIPS 1: Resumes
IRING1: Ring  Inner  Outer  Points    Average     Sigma     Cumul. Flux
IRING1:          (arcsec)             (JY/BEAM )  (JY/BEAM ) (JY      )
IRING1:   1      .0     .8       9    -.2418E-05   .4635E-05  -.1833E-05
IRING1: Appears to have ended successfully
IRING1: localhost    31DEC05 TST: Cpu=       1.4  Real=       2
AIPS 1: Task IRING   has finished