GDAL: efficiency of various compression algorithms

Posted by & filed under QGIS.

Let’s say you’ve got a lot of raster files you want to host on your map server, or even just one large backdrop. I needed to do the latter, but either way, you’re faced with the same problem: how can I reduce file size and access time? Whatever else I do – such as building… Read more »

Adding spatial indexes to all your tables

Posted by & filed under QGIS.

I  previously blogged about how to use table spaces and showed a little script to automate updating your spatial indexes to use a given namespace. A common problem with PostGIS is that people forget to build spatial indexes on their tables (I’m guilty of it myself as much as anyone). Assuming you use ‘the_geom’ as… Read more »

Quantum GIS in volunteer fire stations

Posted by & filed under QGIS.

Here is a nice little article in PC World magazine that mentions the use of QGIS in computer centers in volunteer fire stations. If we have wormed our way into a PC World magazine, I guess we (the Quantum GIS project) have finally ‘made it’ as a popular desktop GIS eh? Thanks William Kinghorn for… Read more »

Building custom QGIS installers for Windows

Posted by & filed under QGIS.

A client wanted their own custom QGIS build which included some patches and a selection of additional python plugins that were to be available from point of installation. Additionally we wanted to brand the installer with their logo and the splash screen too so that users realise they are using a custom build. The actual build process under windows using… Read more »

QGIS at the University of Cape Town (UCT)

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One of the things I have always strongly believed is that FOSSGIS is to become pervasive, we need to make inroads into educational institutions – schools and universities – to try to make FOSS GIS part of the standard curriculum so that students realise there are FOSS alternatives to the range of proprietary software they… Read more »

Some notes on the great migration : QGIS svn to git

Posted by & filed under QGIS.

If you follow the QGIS developer list, you will probably be aware that we are migrating our source code management (SCM) over from SVN to GIT. This is the second great migration we are doing. Early in the project we used to use CVS and then migrated to SVN when Sourceforge introduced SVN into their… Read more »

Wrapping up the QGIS Meeting in Lisbon, April 2011

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The meeting was hosted by IGOT (Instituto de Geografia e Ordenamento do Território) which is a research institute within the ‘Faculdade de Letras de Universidade de Lisboa’. We would like to extend our heartfelt thanks to the Instute and University for hosting us, and in particular the following academic staff members who supported our meeting:… Read more »

Kicking of the QGIS Hackfest : Lisbon, April 2011

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The QGIS Lisbon 2011 Hackfest got underway last night with our kick off dinner. It was great to meet many new people and re-encounter those I have met on previous hackfests. It used to be that we were a purely virtual community, but thanks to our 6 monthly developer meetings that is no longer the… Read more »

Fun with GeoNames

Posted by & filed under General FOSSGIS, Postgres & PostGIS, QGIS.

The GeoNames dataset provides a list of global placenames, their location and some additional information such as population and so on. It is published under the Creative Commons Attribution 3.0 License, which allows you to use the data for your own purposes. You can download the data by country, or the entire global dataset. In… Read more »