TopoFusion support forums

TopoFusion Support => TopoFusion Pro => Topic started by: BobBailey on May 10, 2009, 07:42:32 PM

Title: Elevation Smoothing
Post by: BobBailey on May 10, 2009, 07:42:32 PM: I have poked around in the archives and searched but found nothing that directly addresses this for me. This thread talks about smoothing but is not exactly helpful to me:
http://www.topofusion.com/forum/index.php?topic=3177.0
Perhaps I am missing something?

Please consider this vertical profile:
http://ebizmax.com/Boating/MiddleMiddleTygart/profileFusionGarmin.png
exported from TopoFusion.

This is a river track and we are going downstream. I have a Garmin 60csx which has the barometric altimeter. The unit lives inside a drybag in my boat, this should dampen any barometric spikes. Although I have been known to go upstream I can assure you that I did not do so on this trip, at most I would have been at the same elevation for a few minutes like in an eddy. I have no idea why the Garmin data jumps up and down (btw, you can see the other pages and download the raw gdb and gpx files here:
http://ebizmax.com/Boating/MiddleMiddleTygart/Index.html)

I would like to find some sort of very simple smoothing tool that assumes one direction of vertical travel. For example, on this track if some number of vertical observations are moving downward and suddenly one is up throw it out and substitute some midpoint between adjacent observations. I am very interested in the %grade but expressed as feet per mile (standard boater talk).

I have a similar problem when biking. I'll clearly be going steadily uphill, on a rail-trail for example, but the elevation data will jump up and down. More frequent logging just exacerbates the problem.

Any thoughts or suggestions?

tia... Bob
Title: Re: Elevation Smoothing
Post by: ScottMorris on May 11, 2009, 01:44:45 PM: I can tell you we will definitely be adding some elevation smoothing in the near future. Likely similar to the way TrainingPeak's WKO software does smoothing (with a hot key and different levels of smoothness). It'll show up right in the profile window.

Thanks for the constructive feedback.
Title: Re: Elevation Smoothing
Post by: BobBailey on May 11, 2009, 02:09:26 PM: Sounds perfect. I had forgotten to mention having it show up in the profile window, that's a good move.

I'd be happy to beta test. btw, I'm a good tester, if it can be broken I'll break it.

...Bob
Title: Re: Elevation Smoothing
Post by: BobBailey on November 07, 2009, 03:22:12 AM: Anything ever happen with this? I updated to 3.93 and then looked at a redo of the original track. Nothing seems to have changed. Do I need to poke at it somehow?

Thanks... Bob
Title: Re: Elevation Smoothing
Post by: ScottMorris on November 08, 2009, 04:53:23 PM: Yep, haven't got to it yet... other cool things like the custom maps feature keep cropping up. Still planning on it though.