Over the past few weeks I have been looking into Neo4j Spatial and PostGIS, the spatial plugin for Postgres. The starting point was, that I needed to store and access naturally tessellated tiles or cells, each with an extent of … Read More
As a windsurfer and sailor, I am particularly interested in good spatial visualisations concerning wind including wind speeds and the wind direction. Wind barbs were invented to be the standard of visualising wind, but to my disappointment, leaflet offered no … Read More
For some time now it has bugged me that there are no interpolation plugins for Leaflet. I believe that future mapping and GIS tasks will increasingly be performed in the cloud or on the fly in web applications, therefore an … Read More
In the fall semester 2015, I attended the lecture “geographic information retrieval”. As part of the assessment process, a paper had to be written. I wrote a paper on a conceptual model for a graph driven gazetteer. Authors: Manuel Bär … Read More
In the fall semester 2015, I attended the lecture “advanced spatial algorithms”. As part of the assessment process, a paper had to be written in Groups of two. The group I was in wrote a paper on the analysis of … Read More
Fundamental Challenges of Humanity – An Essay In September 2000 an unrivalled gathering of world leaders adopted the UN Millennium declaration, otherwise known as the Millennium Development Goals (MDGs), at the “Millennium Summit of the United Nations”. The fundamental idea … Read More
In this example, you will see how to create a basic Leaflet map with D3 overlay. These layers are added with the Queue.js framework and are in GeoJSON format. Because I have commented the source code pretty thoroughly, I will … Read More
The first step in any project is to define what we want and how to display something and what frameworks are already around to ease the proccess. We want to create a map and add a few markers, so we … Read More
Description I recently had to seperate 8-BIT MODIS data into individual days. The MODIS snow cover product consists of one file for eight days. The files are therefore in a 8-Bit format where every Bit represents one day and where … Read More