This blog is primarily a hobby of mine and my goal has always been to keep everything as free as possible. There are several ways you can help offset some of the costs involved.
Google Earth 5.2 Bugs - There are a couple of bugs in Google Earth 5.2 that will significantly affect some of the addons available at the Google Earth Library. The first bug will cause scripts in pop-up windows to perform very poorly and freeze up. The second bug causes some polygons that should be clickable to be un-clickable. Unfortunately, there isn't much we can do except revert back to GE 5.1 or wait until 5.3 and hope these get fixed.
By topomatt, on August 19th, 2010
These maps show forest canopy heights throughout the Earth and the United States. The data was obtained from NASA’s ICESat, Terra, and Aqua satellites and processed by Michael Lefsky. The shades of green show the height of the forest canopy from 0 to 230 feet. For any patch of forest, the height shown means that 90 percent or more of the trees in the patch are that tall or taller.
More information about the maps and the data can be found at the websites below:
There are two maps available. The first shows the forest height over the entire globe. The second is a more detailed map of the forest height for the United States. There is also a Google Earth version of the global map that can be downloaded using the button below.
Image Credit: NASA Earth Observatory/Image by Jesse Allen and Robert Simmon/Based on data from Michael Lefsky.
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By topomatt, on December 2nd, 2009
The National Register of Historic Places has identified and documented approximately 80,000 districts, sites, buildings, structures, and objects that are significant in American history, architecture, archeology, engineering, and culture. The Register is maintained by the US National Park Service (NPS).
The NPS has created a Google Earth version of the database, which you can find at the National Park Service Google Earth Layers web page. However, the version they created isn’t very user friendly and appears to be out dated.
I’ve used the most current source data (as of November 2009) to create a much more user friendly version of the Registry. Simply download the Network Link from the bottom of the post, zoom in close to a city, and the historic places will automatically show up as you navigate around.
The historic places are separated into Points and Areas. The Points typically represent a single location, such as a house or building. The Areas might represent large areas, such as historic districts. There are approximately 80,000 locations mapped in total.
The placemarks do have some geocoding errors, which are carried over from the source data. I have no plans to correct these. However, I think overall the geocoding appears to be very good.
This collection is not intended to be current, “official” or complete!!. You MUST go to the National Park Service website if current or official information is required.
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