[gdal-dev] GDAL precision for Geometry object

[Hermann Peifer]

On 2015-10-10 14:06, Even Rouault wrote:
>
> The implementation of ExportToWKT() in GDAL uses 15 decimal figures ("%.15f"
> printf formatting) whatever the source precision was, and as you point,
> whatever the intrinsic precision of the double value is.
>

Does "%.15f" have any added value over "%.15g" (in the usual real-life 
GIS situations, I mean). I also vaguely remember some posting/ticket 
about "%.15f" versus "%.15g", including a request to partially revert a 
changeset. This was years ago, and I can't find at the moment.

Hermann