On Tue, Sep 13, 2011 at 12:06 PM, Bryce L Nordgren <bnordgren at gmail.com> wrote: > http://trac.osgeo.org/postgis/wiki/DevWikiAffineParameters Oh, BTW, check my math. I was formatting it at the same time I was doing it, so there may be some issues. I hope not, but you never know.