Suunto Trek Manager (STM) .sdf files (stmsdf)
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## Suunto Trek Manager (STM) .sdf files (stmsdf)

This format can...

- read and write tracks

- read and write routes

This format has the following options: index .

This format supports the .sdf files from the Suunto product family 'Suunto Trek Manager', 'Suunto Ski Manager' and 'Suunto Sail Manager'. The contents of the sdf file depends on the used product and can be one route or one track. Thatswhy when you want to use sdf on the output side you have to use the -r OR the -t option. This will tell GPSBabel which type of data should be written.

Currently we can read the following file types:

4 = M9 TrackLog
5 = Route
28 = X9 TrackLog

`gpsbabel -i gpx -f some-routes.gpx -r -o stmsdf,index=3 -F single-route.sdf`

Suunto Website

### `index` option

Index of route (if more than one in source).

Convert route number 'index' from source into sdf format.

We have a lot of more expressive formats thats support more than one route. At this place sdf files are limited to only one single route. With option index you can specify which route from source should be converted.

Our default index is 1.

This example will convert route number two and three into separate sdf files:

`gpsbabel -i gdb -f routes.gdb -r -o stmsdf,index=2 -F route-one.sdf -r -o stmsdf,index=3 -F route-three.sdf`

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