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…

How to find geospatial data for Spain

In some countries, such as the USA and Spain, there is a very nice law that makes life easy for geoscientists. This law guarantees free access to a broad range of geospatial data like DEMs, satellite imagery, aerial photographs, ground use data, hydrological information and so on. In most cases, these data are made public via web-based GIS applications. These are generally rather slow, but allow to display a lot of different datasets. I did both my diploma thesis and my PhD in Spain and I really needed to find out about all the data available. I knew that they…