[postgis-devel] Boxes cache and type (was: Caching Double-based Boxes)

[Sandro Santilli]

On Fri, Nov 25, 2011 at 11:54:01AM +0000, Mateusz Łoskot wrote:
> On 25 November 2011 09:38, Nicklas Avén <nicklas.aven at jordogskog.no> wrote:
> > In my example I posted in last post, the difference is 0.3 meters! It is
> > no microunits we are talking about.
> >
> > The result is also that the ordering is wrong. You don't get the nearest
> > point when you expect it.
> 
> AFAIU, if error tolerance at 5-th or 6th d.p is enough,

It's not about decimal places, but significant digits.
Niklas datase is probably using many digits _before_ the decimal point.

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