Category Archives for gis
adding google srid (900913) to postgis
I was loading some openstreetmap data into my postgis, when I noticed that postgis doesn’t include the unofficial google projection (900913). The official one is 3785, but osm2pgsql still uses 900913. Searched around a bit, and found following working insert … Continue reading
heavy duty web gis server
Last week, I had a question regarding the hardware specs for a heavy duty web map server (based on GeoServer). This is of course no exact science, there are some things that need to be clear before you determine the … Continue reading
ArcGIS Server REST Frustrations
Apparently ESRI has a hard time understanding how a cache works… In my experience, when you add a service (or application, or whatever) for the first time, there’s no cache of that service, right? It wasn’t there before, so there … Continue reading
crossdomain requests with flex and arcgis server
Today, a colleague had a problem with setting up a demo of the flex api of ESRI. There was a certain layer (hosted on another ArcGIS Server), that wouldn’t want to show up. The same layer did show up in … Continue reading
Tips and Tricks for writing PostGIS Spatial Queries (bostongis.com)
The guys from bostongis.com gave a presentation at OSCON 2009 last week about writing PostGIS spatial queries. You can download the presentation here, but these are main points (please note that these tips & tricks are all meant for PostGIS … Continue reading
Geostack Workshop
Couple of days ago, Paul Ramsey and Steven Citron-Pousty gave a workshop at GeoWeb (@ Vancouver, BC) on installing, configuring and using a complete open source geospatial application stack (database, application server, web app & desktop. Except for the desktop … Continue reading
ArcGIS Server Manager Service doesn’t start
When you find yourself with a ArcGIS Server Manager Service that doesn’t want to start, and you find nothing in the logfiles (mine said something like this: The description for Event ID ( 4098 ) in Source ( ArcGIS Server … Continue reading
New version PostGIS 1.4
The new version of PostGIS has arrived! This release contains some big performance improvements, as well ass some restructuring under the hood! check this: http://www.postgis.org/pipermail/postgis-users/2009-July/024035.html Some of the new features: – ST_Union() uses high-speed cascaded union when compiled against GEOS … Continue reading
ESRI Entreprise GIS Portal
Esri launched a new portal, specifically for the enterprise GIS users: http://resources.esri.com/enterprisegis/ The site says the following: This resource center is a technology-focused website providing unified access to Enterprise-related content. It is intended primarily to help IT Professionals implement a … Continue reading
thoughts about ESRI Licensing
Mhhh, just going through the ESRI Licensing policy, where I found this: ” Staging Server License” In addition to the Development Server License Rights, Licensee may use and install the Software for the following purposes: user acceptance testing, performance testing, … Continue reading