![]() ![]() 100% will produce an unaltered map, and 0% would make it invisible, so it's not even an option. This control lets you decide exactly how opaque the background will be. If you choose to have a background map, it's a good idea to lighten up the colors in the map - i.e., make it partially transparent - so that you can actually see your data on top of it. ( Click here for an example map that lists and demonstrates the many backgrounds that are available in HTML maps.) For technical and legal reasons, the choices available in HTML maps (Google Maps & Leaflet) are not the same as those available in JPEG/PNG/SVG maps also, in Google Maps, you can change the background view at any time. Waypoints and tracks are much more useful with a map behind them this is where you decide which kind of map that will be. ![]() 100% will produce an unaltered map, and 0% would make it invisible. You could also use "GV_Export_GPX()" for an even simpler link that skips the middle steps in the process: Export all as GPX Īpplies to: All formats except Google Earth If you want to provide a plain text link that initiates the export process, use the "GV_Export_Data_From_Map()" function, like this: Export data They will then have the option to export the map's tracks and/or waypoints in GPX, KML, or plain text format. If you choose to "allow export of data from the map" (and if the utilities menu in your Google map is enabled), people can download the data from your map by selecting "Export map data." from the menu. NOTE: If you choose to use DEM elevation data, any GPS altitude readings that were originally in your data will be discarded!įor more info about elevation data, click here. Even if you already have elevation info that was recorded by your GPS, this can still be helpful because GPS devices are not very reliable when it comes to altitude data, and the data can be very "noisy," with ups and downs that shouldn't really be there. If your coordinates do not contain elevation information, enable this option if you want to be able to colorize by altitude or draw an elevation profile. GPS Visualizer has access to a copy of NASA's SRTM (Shuttle Radar Topography Mission) elevation data set, as well as the USGS's NED (National Elevation Dataset). Negative latitudes and longitudes are south and west, positive numbers are north and east.Īpplies to: all formats, including file conversion.Tab- or comma-delimited text tracklogs (except application-specific files) must have a header row that includes the names of the fields (most importantly, "latitude" and "longitude"), so that GPS Visualizer knows which columns the important information is in.ZIP files can contain more than one data file. gz suffixes, respectively) are accepted, as long as their contents aren't so large that they might overwhelm the server. If you upload multiple track files, they will be plotted as separate paths in the same graphic.You can mix and match file types it's not a problem if, for example, your waypoints came from OziExplorer but your tracks are in GPX format. ![]() Most file types are detected by their filename suffix, so make sure their names end in ".gpx", ".trk", ".csv", ".wpt", ".plt", ".igc", ".xml", etc.Synthesize description/name/label/folder. ![]()
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