[postgis-users] 0.7.4 Release
jeffloun at refractions.net
Fri Feb 14 12:29:20 PST 2003
All looks correct with what you're saying, the patch has been commited into the cvs
> There has never been a break... just a mis-interpretation of holes.
> The PIP function (we talked about it already, do you remember?) loops
> for one point more then the available once. The crossing check does not
> do the right thing thus - sometimes - it makes shp2pgsql think that
> an hole is not an hole (does not find any other ring containing it) and
> consider it as a new outer ring. Visually it is clever that it IS an hole.
> Anyway, instead of keep asking for data proves (send the shape...) why not
> just check the PIP() function contained in shp2pgsql ? I compared it with
> the PIP function found in the main postgis objects (_ops maybe?) and is
> different, for just an i<(n-1) check in the for loop. We checked togheter
> the shapefile format specification and we found out they are "closed" as
> the pgsql once.. do you remember ?
> It is not easy to discover the problem because many GIS viewer have their own
> Polygon In Polygon functions to check for holes, and sometimes overlapping
> layers will write something in the supposed hole thus making it invisible.
> I've seen that latest modification of shp2pgsql are very few
> (a couple of lines maybe?) from 0.7.3, so I don't see why should
> it work now.
> The question is: have you checked at all the PIP() function defined there ?
> [ sorry for the tone, but I find a lot of resistance against my patches,
> I find myself keeping patching all new releases with little response
> from main developers -- END_OF_STRESS ]
> BTW, Thanks a lot for your job.
> pramsey wrote:
> > Do you have data which still breaks the current shp2pgsql?
> > strk wrote:
> > > There is no trace of fix for the PIP() bug in the new shp2pgsql.
> > > Is there any problem with it ?
> > >
> > > --strk;
> > >
> > > pramsey wrote:
> > >
> > >>PostGIS'ers,
> > >>
> > >>Since more and more new users seem to be trying to use the release
> > >>version with PostgreSQL 7.3.X, I have created a new release version
> > >>0.7.4 which includes support for that PgSQL version. It also includes
> > >>the several fixes to shp2pgsql which have occurred since the last
> > >>official release. Spatial index selectivity is included as well, though
> > >>that is pretty hard to figure out until we add the documentation. Dave
> > >>explained it thoroughly on this list, for those who are interested
> > >>(search for "selectivity" in the archives and read the Makefile carefully).
> > >>
> > >>The next release should be 0.8.0 which will include real spatial
> > >>predicates, based on the GEOS library (geos.refractions.net). Before
> > >>that major release, there will be a testing period where we will be
> > >>asking folks to make use of the CVS version and exercise the predicates
> > >>and the build system.
> > >>
> > >>P.
> > --
> > __
> > /
> > | Paul Ramsey
> > | Refractions Research
> > | Email: pramsey at refractions.net
> > | Phone: (250) 885-0632
> > \_
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