compress a track to reduce the number of points and speed up uploading.To reduce the data volume, you may want to :.This allows more accurate tagging of the uploaded logs. For instance, separate the flight log and the bus trip from the airport. You may want to split your logs into parts depending on some criteria.speeds higher than 300 km/h lower than 1 km/h (values can be computed by gpsbabel).distance between trackpoints more than 500 m,.If the receiver produced implausible results:.
Also, if you spent a while at some place, the resulting cloud of points is not that useful for mapping.You may want to remove points where your GPS receiver had poor reception (say you were inside a building).To improve the remove or correct bad data:.You may want to exclude the area around your house ( Using filters with GPSBabel shows how to do that with gpsbabel) and possibly modify the timestamps. This can give people a lot of information you don't want them to have. Your GPS tracks can reveal your exact address and show when you were where.In particular, don't edit the locations of trackpoints, just remove bad ones and split the tracks as required. OSM is interested in the raw data, so you shouldn't edit your tracks to match what you would like to see mapped.You should only upload raw data you collected yourself in the real world.If you followed the conversion step before now, the track log should be in GPX file format. Global Navigation Satellite System Tracelogįor a variety of reasons, you may want to edit a GPS track log before uploading it to OSM.
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