paragliding specific feature request

[Ulisse]

Some features could make this application really useful for paragliding route tracking:

- It would be really nice to have max/min/average values for both positive and negative vertical speeds (and maybe a specific graph too)
- if feasible, the track could be coloured according to the climb ratio, i.e. blue when descending and red when rising.
- if available in map sources, the actual terrain elevation could be displayed together with track elevation, to show the pilot's height above the land.

first two features could be useful also in other uses i guess, like biking or mountain running.

[Qball Cow (qball-qballcow)]

Can I get example GPS files and mockup?

[Ulisse (ulipo)]

I reused an old mockup, 'cause for some reason it seems I can't compile GPX Viewer on Ubuntu 11.10, I hope the interface is still similar.

[Ulisse (ulipo)]

GPS example file, with some nice thermals. It contains visible climbs and sinks, should be useful to test track coloring.
Regarding minimum and average climb/sink ratios, experience told me it could be more useful to have instant actual (calculated) value near the position pin.

[Qball Cow (qball-qballcow)]

I looked at libchamplain, If I make my own PathLayer it should be easy enough todo. (allready have 70% done).

Is there some 'standard' in colors?

[Ulisse (ulipo)]

I don't think there is some standard, I'd go with a gradient from blue to green, yellow, orange and red starting respectively from the deepest sink to the highest climb ratios; "neutral" should be somewhere between green and yellow, in that way.

This is just my opinion, btw.

[Qball Cow (qball-qballcow)]

First implementation is in git.. in the port-to* branch..
Currently track gets divided into 5 levels and coloured based on that.