Upoad Network to track

[KenF]

I just recently started playing with the network feature and have a nice file for a group of trails that are basically out my back door.  But what I would like to do is load the compiled network into my (non-mapping) GPS receiver (Garmin Foretrex) as a single track so that I effectively have a map which will display on the GPS screen.

Maybe I have missed something but I cannot seem to do this, at least not as a single track. I do realize that there is probably an issue of continuity since the network is, for lack of a better term, a "spider web" made from the combined  tracks.

Anyhow is there a way to do this? Can there be?
Thanks
KF

[ScottMorris]

This would be useful, and there's no clean way to do it in TF as of yet.

If there are less than 20 tracks you can do this -- you'd just need to make sure each track is less than 500 points each.  (A mass simplify function as suggested by Wayne in another thread would work here).

It should be possible to create a single track that traverses every link in the network at least once...  that track could then be simplified to 10,000 points (and split into 500 point tracks).  You could do this by hand right now -- click on each segment in succession, making sure no "jumps" happen.  I'll have to give it a try on one of my networks for local trails.

[KenF]

Quote (ScottMorris @ Nov. 13 2008,3:19)

This would be useful, and there's no clean way to do it in TF as of yet. If there are less than 20 tracks you can do this -- you'd just need to make sure each track is less than 500 points each.  (A mass simplify function as suggested by Wayne in another thread would work here). It should be possible to create a single track that traverses every link in the network at least once...  that track could then be simplified to 10,000 points (and split into 500 point tracks).  You could do this by hand right now -- click on each segment in succession, making sure no "jumps" happen.  I'll have to give it a try on one of my networks for local trails.

Quote

This would be useful, and there's no clean way to do it in TF as of yet.

Thanks. That at least answers the question. The specific network that I created, for now, has 217(!) separate tracks although it was created from, perhaps, 8 or 10 files. I can certainly try some tinkering with the input files to tighten the whole thing up a bit.  

Yes a mass simplify function would be a wonderful thing, although perhaps that needs to built into the network function itself so that individual tracks are simplified on-the- fly before being incorporated into a network. Maybe do one pass that determines how many resulting points there will be and another after simplifying each track to x%?  

I'll also have to check, I think my Foretrex can only save 250 points in a saved track  but, of course, the owner's manual doesn't say.  That may be too few for reasonable display of any networks anyhow. But that suggests another option - save network to x tracks.

[KenF]

Quote (KenF @ Nov. 14 2008,7:01)

Quote (ScottMorris @ Nov. 13 2008,3:19) This would be useful, and there's no clean way to do it in TF as of yet. If there are less than 20 tracks you can do this -- you'd just need to make sure each track is less than 500 points each.  (A mass simplify function as suggested by Wayne in another thread would work here). It should be possible to create a single track that traverses every link in the network at least once...  that track could then be simplified to 10,000 points (and split into 500 point tracks).  You could do this by hand right now -- click on each segment in succession, making sure no "jumps" happen.  I'll have to give it a try on one of my networks for local trails. Quote This would be useful, and there's no clean way to do it in TF as of yet. Thanks. That at least answers the question. The specific network that I created, for now, has 217(!) separate tracks although it was created from, perhaps, 8 or 10 files. I can certainly try some tinkering with the input files to tighten the whole thing up a bit.   Yes a mass simplify function would be a wonderful thing, although perhaps that needs to built into the network function itself so that individual tracks are simplified on-the- fly before being incorporated into a network. Maybe do one pass that determines how many resulting points there will be and another after simplifying each track to x%?   I'll also have to check, I think my Foretrex can only save 250 points in a saved track  but, of course, the owner's manual doesn't say.  That may be too few for reasonable display of any networks anyhow. But that suggests another option - save network to x tracks.

Quote

I'll also have to check, I think my Foretrex can only save 250 points in a saved track  but, of course, the owner's manual doesn't say

Well you learn something new every day. The Foretrex will, indeed, allow saving tracks of 500 points.

[wayne]

In this suggestion post I mention that  TF lets you upload to your active log (at least on my Garmin 76CS).

As the active log is 10k points vs the 500 points in each saved track, you can use reduce networks to 7500 points and upload them to the active memory.  It will display, and you have 2500 points left over for new logging.

Assuming you loaded and run the trail start to finish, the points you least need will be erased and overwritten with your new track.

[ScottMorris]

Great point Wayne, thanks for chiming in.

I often forget about the active log since I usually want to keep it free for collecting data on long rides.

But for network, it's ideal -- you can store as many tracks as you want, you just have 10,000 total points to work with.

A mass simplify function would be great here, but you can control the size of the resulting network by simplifying the input tracks, too.  Tedious if there are too many tracks going in, but it might work.