Calibration Points

Before a scanned map can be displayed in the correct location, it needs to be calibrated (geo-referenced). This process involves specifying the location of two known points on the map. Once the correct geographic coordinates are known for these points (called Calibration Points), ExpertGPS can calculate the coordinates of every other point on the map.

Scanned maps that were produced by other mapping programs may already be geo-referenced, in which case ExpertGPS will perform the map calibration automatically. There are three main formats for expressing map calibration information:

Calibration File Types

If the scanned map does not have a calibration file, you will need to calibrate it manually before it can be properly displayed in ExpertGPS.

ExpertGPS is mapping and file conversion software for your Garmin GPS ExpertGPS is mapping and file conversion software for your Magellan GPS ExpertGPS is mapping and file conversion software for your Lowrance GPS
ExpertGPS works with hundreds of GPS receivers, including all Garmin Drive, nĂ¼vi, eTrex, Colorado, Dakota, echoMAP, GPSMAP, Edge, Forerunner, Montana, Oregon, and Rino models, Magellan eXplorist, Meridian, and SporTrak GPS receivers, and Lowrance iFinder, HDS, Elite, HOOK, LCX, and LMS GPS chartplotters and fishfinders.
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Find your GPS on the ExpertGPS compatibility list.

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