Digital Geography

Online GeoJSON Editor

The web is built upon a small set of languages that are present everywhere. Besides HTML, Javascript is the most common technology around here.  So it is not a surprise that web cartography adapts this technology and uses the native javascript object type to store its vector data. The specification is called GeoJSON (for Javascript Object Notation) and extends the JSON model with geometry fields. But if you ever needed to write some lines of Javascript, you’ll know that it’s brackets can drive you crazy. So why would someone want to write table-like structures in such a quirky format? The…

Innovative SRTM Download

It’s been a couple weeks since I’ve posted here, but I just found something I wanted to pass along. If you work with geospatial data, you are probably familiar with the Shuttle Radar Topography Mission (SRTM) that collected elevation data over much of Earth. These data are available from a number of interfaces on the Web, but this is one of the nicest, and most innovative, ones I’ve found. SRTM Tile Grabber Just find the spot on Earth you are interested in and you can download the SRTM data for that area as a geotiff. I think this is probably…