HTML5 Elevation with Google Maps

Vizzuality, the Spanish developers of some of the coolest Google Maps apps, has created a Google Map that allows you to view all the world's mountain ranges.

The map uses an HTML5 canvas overlay to visualise elevation data worldwide. The map includes a slider that allows you to adjust the elevation above sea level that is shown on the map.

If you set the slider to 0 metres then most of the world's land is shaded on the map. If you drag the slider up to 5400 meters then suddenly the Himalayas look very lonely.

Visual Raster

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Worldwide Elevation Charts

Geocotext-Profiler

Geocontext-Profiler allows you to make topographic profiles for any location on Earth.

Creating a topographic profile is very easy. You just need to find your location on the map and then add map markers to define where you wish to view the elevation data. A number of quick links will take you to the topographic profiles of some well known locations around the world, such as Mount Everest and the Grand Canyon.

Once you have created a profile you can send the link to your friends or you can embed it in your own website or blog.

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Elevation Profiles With the Google Maps API

ElevationService Maps API v3

Google have added a new service to the Google Maps API. The new ElevationService enables map developers to determine elevation profiles.

Using the ElevationServices map developers can now request the elevation in meters for one or more sets of coordinates, or request a specific number of elevation samples equally spaced along a path. This will allow map developers to add elevation charts to their maps (as in the screenshot above which uses the Google Visualization API to plot the elevation profile.)


Via: Google Geo Developers Blog

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