TomTom
.itn itinerary files TomTom uses itn or itinerary files to manage waypoints in its TomTom Navigator software. This allows users to use the software to mark specific locations on the TomTom maps, either in the software or using TomTom software on a PC.Using PC software such as TYRE - it is possible to mark these locations on an internet map site and translate this information into an itn file than can be used directly on a TomTom navigator installed device.If you refer to the route plan page of this site you will find a number of these itn files. Click on one of them to view the contents.Notice how there are no spaces at the top of the file and no gaps between the file entries.The data is constructed as shown below -9749281|3539242|START POINT|4| -9751531|3549321|WAYPOINT|0| -10191168|3518856|FINISH POINT|2| For example the location 35.392420, -97.492810 when converted to a TomTom itn format becomes '-9749281|3539242| Notice how the longitude and latitude are reversed to WGS84 standard. The '|' (pipe) character is used separate the data variables. After the 2nd pipe a description can be added that will display on the TomTom. I do not know the limitations of this variable however a range of characters can be used here. Lastly the itn file must end in a field flag The flag field is mostly ignored by POI Editor (especially when loading itns) such as TYRE but you can manually edit it in a text editor if you really want to. The itinerary flag field consists of : 0 : None 1 : Itinerary location is enabled 2 : Itinerary location is a stop-over (as opposed to a pass-by location) 4 : Itinerary location is departure point (Should only be set for the first item in the itinerary file) The flags can be combined, 5 would be 1+4 -- an enabled, departure point. 3, 2+1 -- an enabled stop-over. etc As a further example, when travelling using your TomTom itinerary... before passing waypoint file reads... -9751531|3549321|WAYPOINT|0| after.. -9751531|3549321|WAYPOINT|1| NOTE: You cannot include more than 49 line entries in a TomTom itn file and use the itn file on a TomTom device. This limitation has been imposed because the device will be unable to cope. You can however use as many entries as you like with a tool such as TYRE! This allows for long distance/multiple entry planning but requires the user to 'split' the file into several manageable files for their tomtom device before use. |
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