Hello Now I have added 2 new case studies at http://postgis.net Tell me if it should be changed in some way.
More stories are welcome. Sorry for the delay. Best Regards Nicklas Avén On Wed, 2016-03-23 at 20:09 +0100, Michal Zimmermann wrote: > Hi, > any progress with the case studies page? > > On Mon, Mar 14, 2016 at 7:21 AM, Michal Zimmermann > <michal.zimmerm...@clevermaps.cz> wrote: > > Hi Nicklas, > > that's great news! I'm not 100 % sure, but we needed the real-time > > results based on user's desire (e.g. show me all the neighbourhoods > > people come to my store from). Guys started experimenting with > > Redshift that uses columnar data storage and got some boost in > > speed. I think they precalculated some measures before releasing the > > project, so the math is not done on the fly, eventually. > > > > Michal Zimmermann > > > > > > CLEVER°MAPS' > > > > ° > > > > Vídeňská 101/119, > > > > Vienna Point II > > > > 619 00, Brno > > > > Czech Republic > > > > T/ +420 511 188 867 > > > > M/ +420 603 513 860 > > > > michal.zimmerm...@clevermaps.cz > > > > www.clevermaps.cz > > > > > > ° > > > > Thank you for considering the environmental > > > > impact of printing emails. > > > > > > > > > > On So, bře 12, 2016 at 11:15 , Nicklas Aven > > <nicklas.a...@jordogskog.no> wrote: > > > Hallo > > > > > > Thanks a lot for your description. I will put it on the list on > > > the web page of PostGIS. > > > > > > I write this of og list just because I haven't had time to do > > > anything about it yet. > > > > > > Thanks > > > > > > Nicklas Avén > > > > > > > > > Skickat från min Sony Xperia™-smartphone > > > > > > > > > > > > ---- Michal Zimmermann skrev ---- > > > > > > Hi, > > > I'm sending the first draft of our PostGIS story. > > > > > > > > > Clever°Maps’ > > > > > > > > > Clever°Maps’ is a three years old startup based in the Czech > > > Republic. We create web apps for four distinct market segments: > > > 1) business/location inteligence - helping companies to make > > > decisions based on data, not on feelings > > > 2) farming - simplifying agenda and everyday work > > > 3) road infrastructure administration - settlement of land > > > property rights, treaty evidence, speeding up the whole > > > administrative process > > > 4) assets administration - treaty management, land purchases > > > > > > > > > All our activities take advantage from PostgreSQL as a great DBMS > > > and PostGIS as a tool to query for data our apps need. These days > > > we keep a complete monthly updated copy of the whole Czech > > > cadastre together with LPIS (Land Parcel Identification System), > > > that is more than 650 GB of data. We use PostGIS for much more > > > than simple queries (although talking millions of parcel lots it > > > is hard to tell them simple anymore): > > > 1) it helped us identify potential issues related to land property > > > rights in one of the regions in the Czech Republic > > > 2) we relied on PostGIS heavily during the French LPIS update in > > > 2015 > > > 3) it was used during the Czech LPIS controls in 2015 where tens > > > of operators were accessing the database, commiting changes to > > > vector layers > > > 4) we use it to intersect LPIS lots with cadastral lots to find > > > relations between those two datasets > > > 5) we use it to parse the national cadastral topological data > > > format (called VFK) - a pretty interesting task that was > > > 6) thanks to continual data update we can watch for treaty changes > > > and notify our customers as soon as possible > > > 7) it notifies farmers who use our app of any violation of > > > fertilizers usage on their land (e.g. some substances cannot be > > > used nearby water sources) > > > > > > > > > Recently our BI team pushed the limits of PostgreSQL/PostGIS > > > trying to use it on ~180M rows of spatial data. They eventually > > > ended up using Amazon Redshift, but the whole geoprocessing is > > > still done in PostGIS beforehand. > > > > > > > > > We are planning to stick with PostGIS as we consider it a corner > > > stone of our success. Combined with other open source tools (QGIS, > > > GeoServer, Leaflet) it lets you do great, unexpected things with > > > data you have. > > > > > > > > > Any suggestions/fixes welcome. > > > > > > > > > > > > > > > Michal Zimmermann > > > > > > > > > CLEVER°MAPS' > > > > > > ° > > > > > > Vídeňská 101/119, > > > > > > Vienna Point II > > > > > > 619 00, Brno > > > > > > Czech Republic > > > > > > T/ +420 511 188 867 > > > > > > M/ +420 603 513 860 > > > > > > michal.zimmerm...@clevermaps.cz > > > > > > www.clevermaps.cz > > > > > > > > > ° > > > > > > Thank you for considering the environmental > > > > > > impact of printing emails. > > > > > > > > > > > > > > > On Čt, bře 10, 2016 at 9:00 , > > > postgis-users-requ...@lists.osgeo.org wrote: > > > > Send postgis-users mailing list submissions to > > > > postgis-users@lists.osgeo.org To subscribe or unsubscribe via > > > > the World Wide Web, visit > > > > http://lists.osgeo.org/mailman/listinfo/postgis-users or, via > > > > email, send a message with subject or body 'help' to > > > > postgis-users-requ...@lists.osgeo.org You can reach the person > > > > managing the list at postgis-users-ow...@lists.osgeo.org When > > > > replying, please edit your Subject line so it is more specific > > > > than "Re: Contents of postgis-users digest..." Today's Topics: > > > > 1. raster question (Stephen Crawford) 2. Re: Call for Case > > > > Studies and knowledge about who uses PostGIS and how (Andy > > > > Colson) > > > > ---------------------------------------------------------------------- > > > > Message: 1 Date: Thu, 10 Mar 2016 12:05:14 -0500 From: Stephen Crawford > > > > <src...@psu.edu> To: PostGIS Users Discussion > > > > <postgis-us...@postgis.refractions.net> Subject: [postgis-users] raster > > > > question Message-ID: <56e1a94a.7010...@psu.edu> Content-Type: > > > > text/plain; charset=utf-8; format=flowed Hell all, I have a table of > > > > rasters, daily weather data, each record is one full raster and an date > > > > column, all the same extent. One of my use cases is to drill down to > > > > get the all the data for a month or year one grid cell. Performance is > > > > slow. Should I make tiles of these daily rasters? I guess I was under > > > > the impression that tiles should be used on a "one table per raster" > > > > basis, and that "many rasters per table" cannot have tiles. Any > > > > thoughts? Thanks, Steve > > > > -- > > > > Stephen Crawford Center for Environmental Informatics The > > > > Pennsylvania State University ------------------------------ > > > > Message: 2 Date: Thu, 10 Mar 2016 13:38:24 -0600 From: Andy > > > > Colson <a...@squeakycode.net> To: postgis-users@lists.osgeo.org > > > > Subject: Re: [postgis-users] Call for Case Studies and knowledge > > > > about who uses PostGIS and how Message-ID: > > > > <56e1cd30.9040...@squeakycode.net> Content-Type: text/plain; > > > > charset=utf-8; format=flowed On 3/9/2016 11:49 AM, Nicklas Avén > > > > wrote: > > > > Hi all At PostGIS web site http://www.postgis.net, there > > > > is a case study list of PostGIS usage. The list is very > > > > short and not touched for some years. > > > > Here is a first draft, spelling/fixes/suggestions welcome: > > > > Vanguard Appraisals is new to the GIS world. In fact, we aren't > > > > really in the GIS world; we just kind of brush up against it. We > > > > do mass property appraisal for entire county and city > > > > jurisdictions, and we develop software to collect, price and > > > > maintain values. We also host assessment data online so that > > > > homeowners can search and find property information much simpler > > > > from the comfort of their own home. Our software and websites > > > > are used in 7 states (IA, IL, MN, MO, NE, ND, SD). We were happy > > > > in our little world, doing parcel stuff, not really knowing > > > > about or using GIS, but then the landscape started changing, and > > > > GIS started popping up all over the place. Our clients starting > > > > asking us if we could host their GIS data, as well as their > > > > parcel data. Some of our clients are very small; there is one > > > > person in the Assessor's office with one computer, no server, > > > > and a very small internet pipe. Some of our clients are big with > > > > many users, multiple servers, and an internet pipe that makes me > > > > blush. :-) We searched and found something that already worked > > > > with our favorite database: PostgreSQL. PG is already hosting > > > > our parcel data, so it seemed like a good idea to let it host > > > > our GIS data too. Using PostGIS combined with MapServer, Perl > > > > and OpenLayers, we came up with online maps that fit the bill: > > > > 1) Great performance. 2) Sql: the ability to write sql to join > > > > our existing parcel data with GIS data makes it simple to work > > > > with, powerful, and fast. 3) Free: because we didn't pay for > > > > anything, we didn't charge anything. Government Assessor’s > > > > offices don't have to charge tax payers to get their GIS online. > > > > PostGIS has been a great decision. When one of our programmers > > > > came up with a crazy idea about doing a sales ratio analysis and > > > > highlighting all the properties on the map, not only was it > > > > possible but not that hard to do, and it has already been > > > > implemented because of PostGIS. I also cannot stress enough how > > > > good and helpful the online community has been. I went from > > > > knowing nothing about GIS to hosting maps only because of them > > > > and all the questions they helped with over the years. Vanguard > > > > Appraisals: http://camavision.com/ Assessment Data: > > > > http://iowaassessors.com/ We host parcel data for all the yellow > > > > links, but we don't host the maps for all of them. Some counties > > > > we host maps for are: Washington MN, Jasper IA, Van Buren IA, > > > > Iowa City IA. Just over 50 counties so far. You can find the map > > > > embedded into the parcel page: > > > > http://vanburen.iowaassessors.com/parcel.php?parcel=000600307304130 or > > > > Full Page: http://maps.camavision.com/map/jasperia > > > > ------------------------------ Subject: Digest Footer > > > > _______________________________________________ postgis-users mailing > > > > list postgis-users@lists.osgeo.org > > > > http://lists.osgeo.org/mailman/listinfo/postgis-users > > > > ------------------------------ End of postgis-users Digest, Vol 169, > > > > Issue 8 ********************************************* > _______________________________________________ > postgis-users mailing list > postgis-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list postgis-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/postgis-users
