Magellan DirectRoute 3.0 Manual de usuario descargar pdf (Pagina 109)

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You must specify either this option or the error option.

error option

Maximum error.

This option specifies the maximum allowable error that may be introduced by removing a single point.

The value of this option is a distance, specified in miles by default. You may also specify the distance in

kilometers by adding a 'k' to the end of the number.

How the error is determined depends on whether the length or crosstrack method is used. If you

are using the length method, the error is the change in the length of the route introduced by removing a

point. If you are using the crosstrack method, the error is the distance from the point to the line that results

if that point is removed.

crosstrack option

Use cross-track error (default).

This option instructs GPSBabel to remove points that have the smallest overall effect on the overall shape

of the route. Using this method, the first point to be removed will be the one that is closest to a line drawn

between the two points adjacent to it.

If neither this option nor the length option is specified, this is the default.

length option

Use arclength error.

This option instructs GPSBabel to simplify by removing points that cause the smallest change in the overall

length of the route first.

Transform waypoints into a route, tracks into

routes, ... (transform)

This filter can be used to convert GPS data between different data types.

Some GPS data formats support only some subset of waypoints, tracks, and routes. The transform filter

allows you to convert between these types. For example, it can be used to convert a pile of waypoints (such

as those from a CSV file) into a track or vice versa.

The following example show you how to create a route from a waypoint table.

gpsbabel -i csv waypts.txt -x transform,rte=wpt -o gpx -F route.gpx

Only the first letter of option value decides which transformation will be done. Depending on the used

option it can be only 'W' for waypoints, 'R' for routes or 'T' for tracks.

wpt option

Transform track(s) or route(s) into waypoint(s) [R/T].

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Magellan DirectRoute 3.0 Manual de usuario Pagina 109