[postgis-users] Geometry problems

[Darafei "Komяpa" Praliaskouski]

PostGIS 2.1 is End of Life and the only way to resolve issues in it should
be upgrading to latest version:
https://trac.osgeo.org/postgis/wiki/UsersWikiPostgreSQLPostGIS

ср, 10 окт. 2018 г. в 16:49, Agustin Ignacio Genoves <
agustingenoves at gmail.com>:

> Here we have installed postgis 2.1.4. I read that in version 2.2 onwards
> if they are binary equal, it returns true even if the geometry is invalid.
>
> El mié., 10 oct. 2018 a las 10:43, Daniel Baston (<dbaston at gmail.com>)
> escribió:
>
>> Plugging the WKT directly into JTS TestBuilder shows that
>> equals=false, even if you paste the same WKT for both inputs. The
>> geometry is invalid, but I would have expected Geometry.equals() to
>> report a correct answer or throw an exception.
>>
>> PostGIS 2.2+ should return 'true' in this case, because it does a
>> memcmp before ever sending the geometry to GEOSEquals.
>>
>> Dan
>>
>> On Wed, Oct 10, 2018 at 9:29 AM Sandro Santilli <strk at kbt.io> wrote:
>> >
>> > On Wed, Oct 10, 2018 at 10:07:20AM -0300, Agustin Ignacio Genoves wrote:
>> >
>> > > when I compared two identical geometries with the function st_equals
>> () it
>> > > returns false. I give details of the geometries and the query.
>> >
>> > When you print the geometries in WKT form you loose precision
>> > (due to the limited number of decimal digits we print).
>> >
>> > Get an HEXWKB representation of those two geometries and I bet you'll
>> > find a difference.
>> >
>> > --strk;
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-- 
Darafei Praliaskouski
Support me: http://patreon.com/komzpa
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