audible feedback, concatenated text, undo, mean position

[GoogleCodeExporter]

The GPS is often operated in uncomfortable conditions --->

There should be an audible feedback.
Not that a key is pressed, but that the action has been taken.
That is, if the GPS signal is lost, there will be no beep.

If several buttons are pressed at the same location, several entries are made.
On a display of the GPX trace, they will overlap and be unreadable.
Better concatenate the texts into a single entry when the GPS doesn't move.
Same position?
 no:  write previous data buffer
concatenate the new data into the buffer

Adding undo?  Of one entry would be enough.
Easier if the entries are buffered to achieve the non-overlap suggestion above:
Undo? yes: erase buffered data

Last, not a request but an idea to experiment.
If a GPS does not move, it can make excursions of the reported position.
If those excursions are random (noise), computing the mean value of the 
position would yield a more precise value.  This is because adding noise 
cancels it.
If this works, I wonder how long the GPS must stay at the same place for the 
process to be effective.

1 000 000 OSM users thank you !!!

Original issue reported on code.google.com by A.Pirard...@gmail.com on 14 Aug 2013 at 7:48

[GoogleCodeExporter]

Here's the equivalent mail I received in French for future reference. Might be 
easier to understand :)

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Bonjour Nicolas,

OSMtracker est un bien beau et utile programme félicitations.
Mais ces qualités sont malheureusement ternies par un gros défaut pénalisant 
son utilisation.
L'absence de réaction quand on pousse une touche fait qu'on pousse deux fois 
pour être sûr et qu'alors deux informations se superposent de manière 
illisible à l'écran du programme importateur du fichier GPX.
La superposition arrive aussi quand on doit pousser deux touches différentes.
C'est pourquoi je propose 2 remèdes dans le problème 222 : bip sonore de 
réaction et utilisation d'un tampon pour grouper les mentions multiples.

Ces deux suggestions ne sont pas du domaine des fioritures mais sont d'ordre 
fonctionnel et je suggère aussi que vous leur accordiez toute votre attention.

Merci,
Bien à vous,

André Pirard.
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Those multiple request probably need to be split in different issues.

Original comment by nicolas@guillaumin.me on 16 Sep 2013 at 9:16