#Import KMZ earthtime software
No free software here, but you may be able to repeat the process using less cash-intensive software (and I will try to do so – in a future post). I used Excel (to process historical census data), ArcGIS 9.2 to create the maps, and a utility to export from ArcGIS to Google Earth ( Arc2Earth). There are undoubtedly many paths to getting animated maps into Google Earth. Here are my two examples:ĭownload Ohio Population Change 1900-2006 (192kb kmz)ĭownload Ohio Population 1900-2006 (208kb kmz) The entire project works well for an undergrad cartography/GIS course. I have my students create animated choropleth maps in one of my courses at Ohio Wesleyan, and thought it would be swell if the students could display the animated maps in Google Earth. I have not seen any animated choropleth maps in Google Earth. More examples are in a list of the “Top 10 Time Animations from 2006 in Google Earth” and “Animation Roundup.” When formatted correctly, a series of points can be viewed as an animation in Google Earth, as in this example of a Whale Shark track. For example, many GPS receivers can attach time to a recorded location. In the most recent version of Google Earth (Mac, Windows ), a “time slider” appears if a KML or KMZ file contains temporal data. Details on how I created these animated maps along with links to the downloadable KMZ files are below. The other shows percent population change from decade to decade. One map shows total population by county from 1900 to 2006. I created a few Google Earth animated choropleth (literally, area-filling) maps of population change in Ohio. Animated mapping has garnered much attention among cartographers in the last decade. Google Earth can display geographic data with a time component, and thus show animated maps.
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