Digital Geography

GPS Visualizer – a great online tool for GPS, GoogleMaps and GoogleEarth issues

I looked for a program to draw circles of a pre-defined radius around some points on earth I had the coordinates from. A quick search returned the website GPS Visualizer, and I absolutely love it! It is not only a great free website to convert GPS data in formats that can be used in GoogleMaps, GoogleEarth, jpgs and many other formats, it also allows you to customize maps very easily. Plus, you can use a large number of different maps as base data layer. It looks like the site has been created to deal with tracks and waypoint data, but…

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:

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…