Tracks

T1.) Where do I find the tracklog on the Colorado?
T2.) How may track points does the internal tracklog hold?
T3.) What information does the Colorado save in the tracklog?
T4.) What is the elevation in the tracklog based on? GPS or altimeter?
T5.) Is there a way to prevent some of the tracklog data (i.e. elevation, temperature) from being collected?
T6.) How do I clear the tracklog?
T7.) How do I download the tracklog from the Colorado to my computer?
T8.) Can I upload tracks from my computer and see them on my Colorado?
T9.) How many tracks can I upload to the Colorado? What is the maximum number of trackpoints supported per uploaded track?
T10.) How can I view multiple tracks at the same time on the map?
T11.) Can I save (archive) the internal tracklog data?
T12.) How do I delete tracks that I've manually saved under Where To?->Tracks?
T13.) What if I don't want to manually archive my tracklog? What happens if my current tracklog gets too big?
T14.) How do I download tracklog archives (manual or automatic) from the Colorado to my computer?
T15.) Do the archived tracks have the same information as the tracklog?
T16.) Can I manually archive a part of my current tracklog?
T17.) Can I navigate along a track? Is Trackback supported?
T18.) What is the file called Saved.gpx in the Archive folder?
T19.) Can track archives be saved to the SD card?
T20.) Can tracks be loaded from the SD card?




T1.) Where do I find the tracklog on the Colorado?


The internal tracklog is visible on the CO through Shortcuts->Where To?->Tracks->Current Track.

T2.) How may track points does the internal tracklog hold?


It contains the most recent 10000 track points.

T3.) What information does the Colorado save in the tracklog?


Each track point in the tracklog contains: coordinates, elevation, timestamp and air temperature. If you use the heart rate or cadence senor the data from these devices is also included in the tracklog.

T4.) What is the elevation in the tracklog based on? GPS or altimeter?


See this FAQ for an answer.

T5.) Is there a way to prevent some of the tracklog data (i.e. elevation, temperature) from being collected?


No.

T6.) How do I clear the tracklog?


You can clear the current tracklog by selecting Shortcuts->Where To?->Tracks->Current Track->Options->Clear or Shortcuts->Setup->Tracks->Options->Clear Current Track.

T7.) How do I download the tracklog from the Colorado to my computer?


The internal tracklog is copied into a file called [drive]:\Garmin\GPX\Current\Current.gpx every time the CO is connected to a computer. Current.gpx will contain one track for each segment in the tracklog. Each segment has a name like "Current Track: DD MMM YYYY HH:MM". Every time you turn off your Colorado the current segment is ended and a new segment is created at startup.

T8.) Can I upload tracks from my computer and see them on my Colorado?


Yes. Copy a gpx file containing the track data into [drive]:\Garmin\GPX and the tracks will be available under Shortcuts->WhereTo?->Tracks. Select the track you want to view and hit Options->Show On Map.

T9.) How many tracks can I upload to the Colorado? What is the maximum number of trackpoints supported per uploaded track?


At least 180 tracks can be uploaded to the Colorado but I have not found a limit yet.

The maximum number of trackpoints supported in an uploaded track is 10000, the Colorado will truncate the track at the end if the track is longer than 10000 trackpoints.

Need verification of the number of tracks supported.

T10.) How can I view multiple tracks at the same time on the map?


Currently you can only view one track on the map (cyan) in addition to the current internal tracklog (black). To view a track on the map select Shortcuts->WhereTo?->Tracks->[track name]->Options->Show On Map . This procedure works for tracks uploaded to your Colorado from a computer and for manually archived tracks.

Automatically archived tracks are not viewable on the Colorado unless you connect to a computer and copy/move the auto archive file from [drive]:\Garmin\GPX\Archive to [drive]:\Garmin\GPX .

T11.) Can I save (archive) the internal tracklog data?


Yes. At any time the internal tracklog can be manually saved (archived in Garmin's terminology) by selecting Shortcuts->Where To?->Tracks->Current Track->Options->Archive or Shortcuts->Setup->Tracks->Options->Archive Current Track. Archived Tracks get saved to a file with a name like YYYY-MM-DD and these tracks become visible in the Where To?->Tracks list.

The Colorado will also automatically save your tracklog data into archive files if you don't save the tracklog manually. More details below.

T12.) How do I delete tracks that I've manually saved under Where To?->Tracks?


These tracks cannot be deleted directly from the Colorado you will need to connect to your computer and delete .gpx files in [drive]:\Garmin\GPX which have the same name as the tracks you want to delete.

T13.) What if I don't want to manually archive my tracklog? What happens if my current tracklog gets too big?


Once the internal tracklog gets close to 10,000 trackpoints the Colorado will begin to auto archive individual tracks segments from the tracklog into files in [drive]:\Garmin\GPX\Archive. The Colorado will pull out enough tracks segments from the current tracklog to bring the tracklog back below 8,000 trackpoints. The first file created is 1.gpx, then 2.gpx, etc. Each archive file is filled in this manner until it contains about 5,000 trackpoints (or is ~1MB in size) and then another file with a unique number is created. Once a total of 20 files is reached the Colorado will delete the oldest file before creating a new file.

T14.) How do I download tracklog archives (manual or automatic) from the Colorado to my computer?


Manually archived Tracks are saved in [drive]:\Garmin\GPX with a filename like YYYY-MM-DD .gpx . The six digit id looks like a timestamp (or it probably should be).

Automatically archived Tracks are saved in [drive]:\Garmin\GPX\Archive and have filenames like 1.gpx, 2.gpx, etc.

T15.) Do the archived tracks have the same information as the tracklog?


Yes. Unlike older Garmin GPSs the archived trackpoints contain the same information as in the original tracklog (ie. coordinates, temperature, time, elevation). Archived tracks also appear to have the same number of trackpoints as the original tracklog.

T16.) Can I manually archive a part of my current tracklog?


Yes. Select Shortcuts->Where To?->Tracks->Current Track->Options->Archive. Once you are in archive mode you should see a green pin at the first track point in the current tracklog. The green pin marks the first trackpoint of the tracklog you want to save. Move the green pin by rolling the Rock'n Roller counter-clockwise (toward the end of the tracklog) or clockwise (toward the beginning of the tracklog). Hit enter when you are done, this anchors the pin at a certain track point. Hitting "Back" on the Rock'n Roller will allow you to move the pin again. Once the green pin is anchored you will see a red pin representing the end point of your track to be saved. You can move it in a similar fashion, up and down the track and hit enter to anchor. Once this is complete you can save the track log and only the piece between the begin and end pins will be archived.

However, there many bugs (see Issues List) in this area, so beware.

T17.) Can I navigate along a track? Is Trackback supported?


Yes, but it requires some special setup. First make sure that you do not have City Navigator or any other autorouting map selected. Having no maps selected or Topo2008 selected will work. Second, set your Guidance Method under Setup->Routing to "On Road for Distance". Third, you should try to use tracks that have been simplified to have a small number of trackpoints, keeping the number of trackpoints below 300-400 works best.

From WhereTo?->Tracks select the track you want to follow. As you move you will receive guidance along the track. Your "destination" will be the end of the track and "next" will be the next trackpoint in the track. Bearing pointers will direct you to the next trackpoint and you will receive audible alerts as you approach these "turns".

You can also navigate along a track with the Guidance Method set to "Off Road". Your "destination" will be the end point of the track with no intermediate "next" points, distance is measured along the track. The bearing you see will roughly follow the track but it is not very reliable especially near sharp turns.

Track reversal is not supported as it is on other Garmin units. Trackback, the ability to create a route from a track with intermediate waypoints, is also not supported but the procedure above provides similar functionality except that you cannot reverse the track.

[Can anybody confirm that this procedure doesn't work - at least starting with firmware 2.54?
2.54 has a Trackback feature that allows you to select the current track for routing (resulting in a "tracback" being offered, but it seems that it only gives sensible results if you either

Using "On Route for Distance" without a autorouting map will only result in an "Route calculation error: no roads near starting point"]

It isn't clear whether you get guidance to every trackpoint or if the Colorado does simplification to the track for navigation.

T18.) What is the file called Saved.gpx in the Archive folder?


When you navigate to a track or perform an Area Calculation the track data is saved into a file called [drive]:\Garmin\GPX\Archive\Saved.gpx .

T19.) Can track archives be saved to the SD card?


No. Only internal memory.

T20.) Can tracks be loaded from the SD card?


Yes. Copy the gpx file into [SD drive]:\Garmin\GPX and the Colorado will load gpx files from this directly similar to the way it does from internal memory.