If you want to influence the locations where labels, symbols or diagrams are displayed within areas, it is useful to have a separate layer with centroids. This article demonstrates how such a map layer can be created and modified in QGIS. The Dutch provinces are used as an example. This is a revised version of […]
Category Archives: qgis
Een serie kaarten genereren
[For a modified version, go to this article.] Sometimes you need to produce a series of similar thematic maps. The only difference is the field used to colour areas or show graduated symbols. Classifications or maximal symbol sizes are identical. For large numbers of maps it is quite annoying to repeat the same actions in […]
Meer combi's Top10NL en AHN25 in QGIS 1.8
As of July 2012, Dutch Geo-office Kadaster has published an update of the Top10NL topographic GIS data set. Areas of central-NL + Rotterdam have been updated. Some ‘holes’ in the terrain have now been corrected, and the new industrial port area “Maasvlakte 2” (under construction) is now visible for the first time. The data set […]
Direct data uit Excel-bestand gebruiken
In response to my previous article about joining data from a csv file, I received a very good tip. From QGIS 1.8 Excel files can be opened directly in QGIS. Strange enough, nothing is mentioned about this in the ‘release notes’. It only works with the older XLS-format, not with the newer XLSX format. You […]
Hoogtekaart AHN25 en Top10NL in QGIS 1.8
Sorry, this entry is only available in Dutch.
Top10NL Kleurenschema JW-style nu ook als .SLD beschikbaar
Sorry, this entry is only available in Dutch.
Koppelen van data uit CSV-bestand
In a previous article I have shown how data from a text file with points can be displayed as an additional layer on top of a layer consisting of areas. There was no connection between de data from both layers. This article explains how areas in one layer can be coloured based on data from […]
Esri File Based Geodatabases en Oracle connecties openen met QGIS
GDAL and OGR (www.gdal.org) libs from Frank van Warmerdam are famous software libraries which make it possible in the Open Source world to read and write a plethora of gis file formats. The nice thing about QGIS is that it using OGR and GDAL. So with every addition or enhancement in those libraries, QGIS itself […]
QGIS installeren via osgeo4w
Most of the Windows users will install QGIS via the so called ‘stand alone installer’ which they download from download.qgis.org. For most of the users this is the easiest and most well know way to install a desktop program. But QGIS has another Windows install possibility. And that is a so called osgeo4w installation ( […]
Staafdiagrammen met legenda
This article describes how to create a map with bar charts and a legend. Required software Quantum GIS (qgis.org) LegendSVG (qgis.nl) Inkscape (optional) (inkscape.org) Required files Map layer with areas Map layer with data As an example, a vector map of the Dutch provinces is used. On top of this a layer is placed from […]