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List:       postgis-devel
Subject:    Re: [postgis-devel] Boxes cache and type (was: Caching Double-based
From:       Mateusz_Łoskot <mateusz () loskot ! net>
Date:       2011-11-26 17:57:48
Message-ID: CABUeae-sG8OKYfNaVOQL=ufSDc=JH3un7VSLvUWMAUBhkq2=cw () mail ! gmail ! com
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On 25 November 2011 12:59, Sandro Santilli <strk@keybit.net> wrote:
> On Fri, Nov 25, 2011 at 11:54:01AM +0000, Mateusz Łoskot wrote:
>> On 25 November 2011 09:38, Nicklas Avén <nicklas.aven@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.

Indeed, d.p. vs s.f. misuse


Best regards,
--
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