WCS questions

[William Thompson]

swalton at galileo.csun.edu (Stephen Walton) writes:

>My original goal was to explore a format for the header in which the
>linear part would translate to normalized distance from solar disk center
>along the north and west axes, and the non-linear part would allow one to
>take the additional step to solar longitude and latitude for features on
>the disk.  In one of Mark's earlier posts, he pointed out that the PC
>matrix could define the former and the CDELT, CRVAL, and CTYPE values the
>latter.  This sounds good to me.  

I'm confused here.  My reading of the WCS document is that the PC matrix must
agree with the CDELT, CRVAL, and CTYPE values.  Or did you mean CmELT, etc.?

Bill