p.s., Re: problem continues... (FlatField/ apparent inversion)

> The spiral pattern was desgined not to have any simple symmetry
> and so catch simple flip bugs.  However, the bug you found
> was actually two flips that preserved the spiral.  The bug
> fix, plus a modifed spiral with "no" symmetries, is now on
> the VisAD ftp server.

I mean the spiral pattern in visad/examples/Test61.java.