Drawing contours with altitude data

Thank you to GEB reader 'DJ' for suggesting this idea in the comments of our post on simulating lakes. It turns out that the algorithm for drawing contours given a regular array of altitude data is … [Read more...]

Google Earth Elevation Profiles

An often overlooked feature of Google Earth, elevation profiles were first introduced in version 5.2. The feature is easy to use, all you need is a path selected in your 'My Places' then go to the … [Read more...]

USGS 3D Elevation Program

The US Geological Survey (USGS) has a program called the 3D Elevation Program (3DEP). From the USGS website: The 3D Elevation Program (3DEP) initiative is being developed to respond to growing … [Read more...]

Measuring distances with the Google Earth Ruler

The "ruler" tool in Google Earth has always been useful, and it has seen a number of improvements over the years. To get started with it, simply go to [Tools] --> [Ruler] in Google Earth and it'll … [Read more...]

New Terrain Mode for Google Maps

Google has announced a new mode called Terrain for Google Maps which lets you see relief maps of 3D terrain. This is a very useful mode if you are going hiking, mountain biking, skiing, etc. in rough … [Read more...]

Google Earth More Realistic with Better Terrain

There was a lot of news last week from Google. Much of the news had to do with Google Maps, APIs, KML search, and KML support on other platforms. However, this past weekend Google released an … [Read more...]