Digital Geography

Rainfall and weather data on GoogleEarth

On Saturday, some villages near my hometown suffered heavy rains. Up to 100 l/m² arrived during the afternoon and evening in Kirchhasel and other places in central Thuringia. Small streams became rivers and flash flooding occurred, damaging houses, roads, and cars. The local newspaper has an impressive pic dump. Locals say this have been the worst flooding for at least 40 years, so pretty much excitement here, we are not really used to this despite the river Saale caused some heavy floodings in the past. Now it looks like thunderstorms will arrive again: So I had a reason to think…

types of web-maps: concepts and possibilities

In my recent articles I was writing some hints and tutorials for creating a webmap. So what is the basic concept behind it and what are the possibilities. 1. Hail the GMAP creator GoogleMaps was probably the main step in webmap perception and usage. Until now it is the quasi standard application for viewing spatial content. The ongoing developments in the keyhole markup language increases the possibilities and usability in everyday work including geocoding and usage of raster as layers:

create a web-map: step 2 or DIY

Since we have managed to get a very simple web-map running on our website, it may be a need for some persons to distribute their own shapefiles using a web-map. In this case it is a good choice to take a closer look on GeoServer. This will provide the mapping engine and uses the OpenLayers library for this as well. But you can skip using the basemaps and just share and show your own shapefiles and raster.

a minimal web-map using OpenLayers (part 1)

Web-mapping is used everywhere since GoogleMaps and GoogleEarth revolutionized our topographical and geographical perception. Keeping that in mind it is useful to get some insights in web-mapping possibilities. An easy-to-use open source application for that is a javascript library called OpenLayers. You can run this on your local Windows or Linux machine easily: Download it from the OpenLayers website or if you are using Ubuntu as your Linux distribution just search for “openlayers” in the Software-Center or use your terminal: But for a real minimal example you will only need 2 files in a folder: the openlayers.js and a index.html…

LTE: Link to Earth OS

LTE is the new OS available in a beta version for all geoscientists and interested fellows. But stay calm… There is a huge need for scientists, students and institutions for reliable, free and well documented programs in geo-related applications. So what’s better then to use Ubuntu. Actually this is a good solution as Ubuntu provides not only the biggest Linux distribution but also one with special releases called LTS which stands for Long Term Support. So you can be sure to use it longer than only two years… But one downpart was the implementation of other geo-related software. There was…