Juni 2nd, 2007 by Felix Hardmood Beck
Text from gpsvisualizer.com
Notes about uploaded files:
Latitudes and longitudes must be in decimal format, not UTM “northing” and “easting.” Negative numbers are west and south, Positive numbers are east and north.
You can mix and match file types; it’s not a problem if, for example, your waypoints came from Cetus but your tracks are in GPX format.
Most file types are detected by their filename suffix, so make sure their names end in “.gpx”, “.pdb”, “.csv”, “.wpt”, “.plt”, “.igc”, “.xml”, etc.
If you upload multiple track files, they will be plotted as separate paths in the same graphic.
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. Comma-separated files must have names that end in “.csv”.
If you want a plain text file to be interpreted as a collection of waypoints rather than a track, the first field must be named “type”. Then, each record in that column should begin with “W” under the “type” field. To force a file to be interpreted as tracks, do the same thing but put “T” in the first field. You can even mix and match trackpoints and waypoints in the same file, as long as you label them as such.
If you’re using Internet Explorer 5 on a Mac, your GPX files might not upload properly if their file type is not set to TEXT. Don’t ask me why; but click here or here for a useful file-type-changing utility. Or use Mozilla.
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