Duplication of some downloaded track pointsFORUMS HOME SEARCH FORUMS

Jim,

If you could share your route, it would be an interesting experiment for me to trace it using the "standard" auto-routing method (which I have been using for years without the issue you have described) and see what happens. If so, what auto-route do ypou use ("on foot", "by bike"?) and what map type.

Mark

Hi Admin - I fully understand your position. 

And while happy to close the issue now that I have a couple of workarounds I would suggest that two identical routes which when downloaded produce two very different gpx  files should warrant a presence on the maintenance backlog. But then I would say that wouldn't I🙂.

Thanks again 

New try....by link.

Remove duplicate trackpoints

Rather than using the Reshape Route tool, you could try the Snap Route to Map tool to replot it - this would be quicker and easier. We don't really see superfluous points on the route as a bug, as they don't affect the path the route takes, so  this probably isn't something we'd be be able to look into given other priorities.

Thanks all for your comments.

Willy - can't access that youtube link.

admin - yes, I tried that reduction  of points. It's a bit 'hit and miss' in that I progessively reduced the number of points until the problem disappeared but then the route wasn't quite mapping to the paths.

I also had an alternative solution - pre-processing the file to remove the duplications and that too worked and could be automated.

But then your observation about not knowing how I plotted the route triggered  something and I suspected (and later confirmed) that all the duplications were at the points I used in guiding the plotting of the route. I had used the route plotting tool - selecetd the start point and then progresssivelly plotted the route to the destination point by left clickimg at the desired points along the way while allowing Plotaroute to map it to the available paths/roads. 

So, I tried an alternative plotting method.

I left clicked on the start point and the finish point and let Plotaroute select a route between them based on a  'walking' profile.

I then used the reshaping tool to adjust that route to go where I actually wanted to go.

The outcome was a route identical to the previous one.

With one significant difference - no duplicated points.

Since this latter approach avoids the issue I can work with that.

That said, I must admit my original plotting approach is {to me} a more 'intuitive' method to develop a route from scratch and it would be great if it could be revised such that the duplications did not occur.

Finally, if this is indeed a bug in the system, how best to get it addressed?

Thanks again.

Jim

Or...

https://studio.youtube.com/video/NTn6ZHSpfR0/edit?o=U

It's hard to know without seeing the route and also knowing exactly how it was plotted. However, you can easily remove redundant points using the Reduce Points tool in the route planner (available on the route planner toolbar).

When I created and then  downloaded a route in gpx format as a track (also true of tcx/fit formats) I noticed that a number of points had been duplicated - identical in every respect.

It usually happened at turning points in the route though not at all turning points and not only at turning points. But very much mostly so.

Is this a bug or an intentional feature?

And if the latter, why?

I won't bore you with the details but this duplication interferes with my currnet processing of the downloaded data to generate a custom route card.