[postgis-tickets] r14808 - add 2 case studies

Thu Mar 24 14:29:54 PDT 2016

Author: nicklas
Date: 2016-03-24 14:29:53 -0700 (Thu, 24 Mar 2016)
New Revision: 14808

Added:
   web/_content/posts/2016/03-17_clever_maps.html
   web/_content/posts/2016/03-17_vanguard_appraisals.html
Log:
add 2 case studies

Added: web/_content/posts/2016/03-17_clever_maps.html
===================================================================

--- web/_content/posts/2016/03-17_clever_maps.html	                        (rev 0)
+++ web/_content/posts/2016/03-17_clever_maps.html	2016-03-24 21:29:53 UTC (rev 14808)
@@ -0,0 +1,30 @@
+--- 
+title: Clever Maps 
+layout: post 
+category: casestudy
+tags: [web apps, cz]
+author: Michal Zimmermann 
+---
+
+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
+
+<!-- pagebreak -->
+
+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.
+
+<http://clevermaps.cz>
\ No newline at end of file

Added: web/_content/posts/2016/03-17_vanguard_appraisals.html
===================================================================
--- web/_content/posts/2016/03-17_vanguard_appraisals.html	                        (rev 0)
+++ web/_content/posts/2016/03-17_vanguard_appraisals.html	2016-03-24 21:29:53 UTC (rev 14808)
@@ -0,0 +1,36 @@
+--- 
+title: Vanguard Appraisals 
+layout: post 
+category: casestudy
+tags: [property appraisal, us]
+author: Andy Colson 
+---
+
+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).
+
+<!-- pagebreak -->
+
+
+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>

