[gdal-dev] GetGeoTransform returning different values

[Even Rouault]

>
> From what I can see, they seem to be kind of far apart to be just 
> significant digits. It’s calculating different pixel sizes and 
> rotations which in turn is causing the lat/lon conversion to be off. 
> The only other thing I can think of is that I compiled the API with 
> PDFium and I believe the homebrew install uses Poppler.

Ah yes that might be it. Such differences ring a bell. I never dig up 
completely to figure out but I presume that one of the backend must just 
use 32-bit floats at some points whereas the other one 64 bit floats.