GPS Visualizer's 'NED1' collection of elevation data has been updated with the latest files from the US Geological Survey's 3D Elevation Program, which uses LIDAR to improve the accuracy of elevation data. GPS Visualizer now has basic support for Points, LineStrings, MultiLineStrings, Polygons, and MultiPolygons in GeoJSON (.json) FeatureCollection files. GPS Visualizer is based in Portland, Oregon, and has been on the Web since October 2002. xlsx),Īnd of course tab-delimited or comma-separated text. Garmin MapSource/ BaseCamp/ HomePort (.gdb), GPX (a standard format used with many devices and programs, including Garmin's eTrex, GPSMAP, Oregon, Dakota, Colorado, & Nüvi series), GPS Visualizer can read data files from many different sources, including but not limited to: Or, you could send an Amazon wish list item. GPS Visualizer is a free service and hopefully always will be however, if you find it interesting, time-saving, or just plain fun, you can say 'thanks' - and encourage further development - by clicking the button above and making a contribution via credit card or PayPal.

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