Category Archives for open source
Gulf of Mexico – BP Oilspill tracking application
Last weekend, I’ve created a web application, that monitors the BP oilspill in the Gulf of Mexico. http://giswhat.be/oilspill2010/oilspill.html The application is completely based on HTML & JavaScipt, JQuery and OpenLayers to be precise. The data is comming from 2 different … Continue reading
update: WMS Performance Shootout at FOSS4G 2009
I’ve been following this previously, but never posted the results! Shame on me! Anyway, these are the slides: http://www.slideshare.net/gatewaygeomatics.com/wms-performance-shootout Conclusion: both where very fast! But in most cases MapServer (in FastCGI configuration) is a bit faster compared to GeoServer. Hehe, … Continue reading
WMS Performance Shootout at FOSS4G 2009
I’ve just received this in my mailbox from Cameron Shorter: GeoServer, MapServer, and ArcGIS Server will be competing for the title of “Fastest Web Map Server (WMS)” at the FOSS4G 2009 conference at the end of October. The Web Mapping … Continue reading
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
PostgreSQL Tips and Tricks
Couple of weeks ago, I wrote an article about writing PostGIS Spatial Queries (here). Today I found the following post: PostgreSQL Tips & Tricks. There are a couple of tips for working with a PostgreSQL database. Here’s a summary: don’t … 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
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
New Toy in Town: Talend (& SDI)
Last week, some guy from Talend France, came to our company to give a hands on workshop of Talend. Talend is a very handy open source ETL-Tool. I can recommend it to everyone who has to work with large sets … Continue reading
New Book: PostGIS in Action
Regina Obe and Leo Hsu have a new book coming out, and it’s called PostGIS in Action. When you look at the table of content, you can see all the relevant topics are covered, and even the new WKT Raster! … Continue reading