Source Data

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To build your own basic maps, you need source data and mapping tools:

Source Data[edit]

Depending on the type of map you are planning to build, you need source data for it.

  • Waypoint - A waypoint is basically a name attached to a GPS coordinate. You record waypoints of point of interests (POI) for your map. The way to record waypoints is dependent on the GPS setup that you use. Please refer to your user manual if you are not sure how to record a waypoint using your GPS device.
  • Tracks/tracklogs - A tracklog is basically a sequence of GPS coordinates. Most GPS device can be set to record the tracklog of your journeys which can then be use for mapping purpose. The way to record tracklogs is also dependent on the GPS setup that you use. Please refer to your user manual if you are not sure how to record a tracklog using your GPS device. Please also refer to our How to track article.
  • Topographic data - Topo data is mostly sourced from public domain SRTM data released by USGS dept. Please refer to the excellent guide by Jack Leurs.
  • Satellite image - Google Earth (GE) has the most accessible high resolution satelite image although not all city areas are covered and some of the covered area are either outdated or have offset errors. To make use of GE images, either buy a GPSMapedit license or follow our Guide.