Re: [postgis-users] k-nearest Polygons
http://postgis.refractions.net/docs/geometry_distance_box.html http://postgis.refractions.net/docs/geometry_distance_centroid.html Both operators are insanely handy and very simple to use :) Skye Book http://skyebook.net -- @sbook <https://twitter.com/sbook> On Oct 27, 2012, at 8:34 AM, Ed Linde wrote: Could you please link me to the postgis 2.0 section in the docs that talks about using <#> and <-> ? Those operators look quite handy to me :) On Sat, Oct 27, 2012 at 3:32 PM, Sandro Santilli wrote: > On Sat, Oct 27, 2012 at 03:27:13PM +0200, Ed Linde wrote: > > Thanks. Just to clear things up, :point_or_poly bind variable needs a > > "geometry" > > type passed in to it, right? > > Yes > > --strk; > > > > > Thanks, > > Ed > > > > On Sat, Oct 27, 2012 at 1:57 PM, Sandro Santilli > wrote: > > > > > On Sat, Oct 27, 2012 at 01:37:05PM +0200, Ed Linde wrote: > > > > > > > Is there a way to know for a user defined "k" what the k-nearest > polygons > > > > to a given polygon or point are in postgis? > > > > > > -- Simple answer: > > > SELECT gid from polygons > > > ORDER BY ST_Distance(the_geom, :point_or_poly) > > > LIMIT :k; > > > > > > More complex: if you have PostGIS-2.0 and need > > > more speed the following versions do use a spatial > > > index, if defined on "polygons": > > > > > > -- k nearest to bounding box of polygons: > > > SELECT gid FROM polygons > > > ORDER BY the_geom <#> :point_or_poly > > > LIMIT :k; > > > > > > -- k nearest to polygon center: > > > SELECT gid FROM polygons > > > ORDER BY the_geom <-> :point_or_poly > > > LIMIT :k; > > > > > > -- k nearest to polygon shape: > > > -- NOTE: assumes the k closest objects > > > -- are among the k*10 objects > > > -- closer to boundingbox > > > -- > > > WITH k_times_10_closer AS ( > > > SELECT gid, the_geom FROM polygons > > >ORDER BY the_geom <#> :point_or_poly > > >LIMIT :k*10 > > > ) > > > SELECT gid from k_times_10_closer > > > ORDER BY ST_Distance(the_geom, :point_or_poly) > > > LIMIT :k; > > > > > > --strk; > > > > > > http://www.cartodb.com - Map, analyze and build applications with > your > > > data > > > > > >~~ http://strk.keybit.net > > > > > > ___ > > > postgis-users mailing list > > > postgis-users@postgis.refractions.net > > > http://postgis.refractions.net/mailman/listinfo/postgis-users > > > > > > ___ > > postgis-users mailing list > > postgis-users@postgis.refractions.net > > http://postgis.refractions.net/mailman/listinfo/postgis-users > > > -- > > http://www.cartodb.com - Map, analyze and build applications with your > data > >~~ http://strk.keybit.net > > ___ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] PostGIS 2.0 connection to Java
I've been building the driver from SVN, it's worked out fine for me. On Apr 30, 2012 11:10 AM, "Brian Sanjeewa Rupasinghe" wrote: > Hi, > > Where can i find postgis 2.0.jar file to connect postGIS with Java. Link > in the PostGIS site is broken. > > Brian. > > ___ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > > ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] PostGIS 2.0.0 Released
Congrats, it's been well worth the wait indeed :) On Apr 3, 2012 5:08 PM, "Javier de la Torre" wrote: > Congrats to everybody, > > Today is a beautiful day. > > Sent from my iPad > > On Apr 3, 2012, at 5:04 PM, Paul Ramsey wrote: > > > The PostGIS development team is super excited, > > can hardly believe that they are actually doing this, > > aren't maybe even sure that they are ready to make > > this kind of commitment, not so young, and not when > > we have so much more living to do, but: > > > > PostGIS 2.0.0 is complete and available for download. > > > > http://postgis.org/download/postgis-2.0.0.tar.gz > > > > The development process for 2.0 has been very long, > > but has resulted in a release with a number of exciting > > new features. > > > > * Raster data and raster/vector analysis in the database > > * Topological models to handle objects with shared boundaries > > * PostgreSQL typmod integration, for an automagical > > geometry_columns table > > * 3D and 4D indexing > > * Index-based high performance nearest-neighbour searching > > * Many more vector functions including > > * ST_Split > > * ST_Node > > * ST_MakeValid > > * ST_OffsetCurve > > * ST_ConcaveHull > > * ST_AsX3D > > * ST_GeomFromGeoJSON > > * ST_3DDistance > > * Integration with the PostgreSQL 9.1 extension system > > * Improved commandline shapefile loader/dumper > > * Multi-file import support in the shapefile GUI > > * Multi-table export support in the shapefile GUI > > * A geo-coder optimized for free US Census > > TIGER (2010) data > > > > We are greatly indebted to our large community of beta testers > > who valiantly tested PostGIS 2.0.0 and reported bugs so we could > > squash them before release time. > > > > And also we want to thank our parents for making PostGIS possible. > > > > Yours, > > > > The PostGIS development team > > ___ > > postgis-users mailing list > > postgis-users@postgis.refractions.net > > http://postgis.refractions.net/mailman/listinfo/postgis-users > ___ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] Are there any Ubuntu PPAs that serve PostGIS 2.0 beta releases?
Looks awesome, Charlie. I'll definitely be giving this a shot today :)
-Skye
On Mar 15, 2012, at 1:40 PM, Charlie Sharpsteen wrote:
> On Wednesday, March 14, 2012 8:18:35 AM UTC-7, Charlie Sharpsteen wrote:
> On Wednesday, March 14, 2012 12:02:24 AM UTC-7, Sandro Santilli wrote:
> On Tue, Mar 13, 2012 at 07:50:32PM -0700, Charlie Sharpsteen wrote:
> > I was wondering if anyone has a Personal Package Archive for Ubuntu that is
> > tracking the 2.0 beta releases. I looked at the UbuntuGIS and Postgis
> > project pages on Launchpad, but the only releases listed there were for
> > 1.5.x. Even the unstable repostory of UbuntuGIS was still tracking 1.5.x.
>
> I'm not aware of any. It'd be very welcome if you want to setup one.
>
> --strk;
>
>
> Allright, I'll take a shot at it. Looks like there is a Launchpad repository
> that is synching with PostGIS SVN every 6 hours or so---perhaps I can get a
> nightly build set up.
>
> -Charlie
>
>
> Ok, I now have a nightly build set up that is tracking the PostGIS trunk.
> Binaries are being built for Oneric (11.11) and Precise (12.04-dev) and can
> be installed thusly:
>
> sudo apt-add-repository ppa:sharpie/postgis-nightly
> sudo apt-get update
> sudo apt-get install postgresql-9.1-postgis
>
>
> Caveats:
> No build of `postgis` or `libpostgis-java`, the only package provided is
> `postgresql-9.1-postgis` which contains the PostGIS plugins, extensions and
> command line tools.
> Builds against GEOS 3.2.2, supplied by the standard Ubuntu repositories, thus
> the topology extension is unavailable.
> Builds against GDAL 1.7.0, supplied by the standard Ubuntu repositories, thus
> some raster functionalities are unavailable.
>
> The raw materials that went into creating this build were the PostGIS
> repository on Launchpad which synchs with the upstream SVN trunk ~every 6
> hours:
>
> https://code.launchpad.net/~registry/postgis/trunk
>
> This repostory can be cloned using bazaar via `bzr branch lp:postgis`. The
> other component is the official Ubuntu PostGIS repository that contains the
> debian packaging materials:
>
> https://code.launchpad.net/~ubuntu-branches/ubuntu/precise/postgis/precise
>
> This repository can be cloned using `bzr branch lp:ubuntu/postgis`. My
> strategy was to fork `lp:ubuntu/postgis`, edit the contents of the debian
> subdirectory to make it compatible with 2.0-dev and then publish the edited
> fork to Launchpad under my `+junk` section. After this was done, I set up a
> `bzr-builder` recipe that fuses `lp:postigs`, which tracks the upstream
> PostGIS repo, with the debian subdirectory contained in
> `lp:~sharpie/+junk/postgis`, which contains my edited packaging info, to
> create a nightly build:
>
> # bzr-builder format 0.3 deb-version
> {debupstream}~r{revno}~ppa{revno:packaging}
> lp:postgis
> nest-part packaging lp:~sharpie/+junk/postgis debian debian
>
> Pretty slick. I will ponder upgrading GEOS and GDAL and setting up a stable
> build for the most recent beta releases.
>
>
> -Charlie
> ___
> postgis-users mailing list
> postgis-users@postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-users
Skye Book
(516) 816-4762
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Re: [postgis-users] Are there any Ubuntu PPAs that serve PostGIS 2.0 beta releases?
Yeah, this is what was fixed in r9499 by using the autoconf lib search or whatever the command is.. It indeed builds, but the regression tests fail.. -Skye On Mar 14, 2012, at 4:11 PM, Charlie Sharpsteen wrote: > On Wednesday, March 14, 2012 1:00:37 PM UTC-7, Charlie Sharpsteen wrote: > - 2.0.0beta2 can compile against the dependencies supplied for PostGIS > 1.5.x via `apt-get build-dep postgis` with the addition of GDAL 1.7.0 via > `apt-get install libgdal1-dev`. However, 2.0.0beta3, released today, and the > current SVN head fail during configure: > > > RASTER: Raster support requested > checking for GDAL >= 1.6.0... found > checking gdal.h usability... yes > checking gdal.h presence... yes > checking for gdal.h... yes > checking ogr_api.h usability... yes > checking ogr_api.h presence... yes > checking for ogr_api.h... yes > checking cpl_conv.h usability... yes > checking cpl_conv.h presence... yes > checking for cpl_conv.h... yes > checking for GDALAllRegister in -lgdal... no > configure: error: could not find gdal > > > This is odd, because running nm against the libraries shows that the symbol > is there: > > vagrant@vagrant-64:~/postgis-2.0.0beta3$ nm --dynamic > /usr/lib/libgdal1.7.0.so | grep GDALAllRegister > 0021a820 T GDALAllRegister > > > Don't know if this is a bug in the latest beta, or a problem with Ubuntu's > GDAL 1.7.0 libraries. Any advice would be appreciated. > > > -Charlie > > Found the problem in config.log: > > > configure:19617: gcc -o conftest -I/usr/include/gdal conftest.c -lgdal > -L/usr/lib -lgdal1.7.0 >&5 > /usr/bin/ld: cannot find -lgdal > > > The configure script is trying to link against both libgdal and libgdal1.7.0, > but libgdal.so does not exist, only libgdal1.7.0.so. According to config.log, > this has been identified and stored in LIBGDAL_LDFLAGS: > > > LIBGDAL_LDFLAGS='-L/usr/lib -lgdal1.7.0' > > > But the test scripts are still trying to pass `-lgdal`. Looks like a bug in > the PostGIS configure script. > > > -Charlie > ___ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users Skye Book (516) 816-4762 ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] Are there any Ubuntu PPAs that serve PostGIS 2.0 beta releases?
As of some time during the alpha releases, it started wanting Geos 3.3.. Not sure what functionality is touching the dependency thiough -Skye On Mar 14, 2012, at 11:29 AM, Charlie Sharpsteen wrote: > On Wednesday, March 14, 2012 8:21:48 AM UTC-7, Denis Rouzaud wrote: > That would be amazing. > But, there is no ppa for geos 3.3 either and I am not sure about gdal 1.9... > It might be a little early to have a ppa repo and dependencies with > unavailable packages > > My 2 cents. > > Pretty sure I built PostGIS from source against GDAL 1.7 and GEOS 3.2.2 from > the Oneiric standard repository. > > Are there any critical functions that are inactive without the latest and > greatest versions of these libraries? > > -Charlie > ___ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
