Dive Site Duplicates [was Re: Dive site management on daily build 4.4.2.669]

[Benjamin]

To be fair, those jump are all about 19.84 metres. So the idea of a 20
metre circle would work for the merge.

On Thu, 11 Jun 2015 00:33 Davide DB <dbdavide at gmail.com> wrote:

> On Wed, Jun 10, 2015 at 8:17 PM, Dirk Hohndel <dirk at hohndel.org> wrote:
> > On Wed, Jun 10, 2015 at 07:25:38PM +0200, Joakim Bygdell wrote:
> >>
> >> > On 10 Jun 2015, at 17:46, Dirk Hohndel <dirk at hohndel.org> wrote:
> >> >
> >> > But what if this is for example a wreck site and the user carefully
> >> > specifies the exact GPS coordinates for the different entry points?
> >> > But then, I guess, they'll have different names.
> >>
> >> Most likely yes.
>
> Yes
>
> >
> > So what I'm looking to implement now would be something like this:
> > (and remember, this is all for now about automatic creation of dive sites
> > when importing from a V2 XML file)
> >
> > IF two sites have the same name
> > AND they are closer than 20m
> > THEN merge them into one site
> >
> > Different name or different GPS? Different sites.
>
> Yes
>
> >
> > And of course next we need the ability to identify two sites and say
> "yep,
> > these are the same, make them one" in the dive site management menu.
> >
>
> Yes
>
>
> > I don't think we'll be able to come up with an algorithm that gets this
> > perfectly right for every user. So I'm trying to come up with something
> > that gets it right in most cases but doesn't prevent someone from fixing
> > it later.
> >
> > So my rationale is "if you meant it to be two different dives, then you
> > almost certainly should have given it different names". But I'll still
> > keep the 20m threshold "just in case".
>
> Once some "merge" or "find duplicates" tool will be available in the
> dive sites management view, it would be nice having the threshold
> configurable.
>
> The above logic should be explained in the user manual. Especially how
> to be sure to do not loose valuabel GPS point during the import.
>
> About my points.
> These are really strange. Currently Subsurface merges only the last
> two that have exactly the same coords.
> I had the companion app turned on the whole day and the rubber boat
> was anchored all the time. Maybe my old smartphone gps was not
> reliable.
> I will merge these manually.
>
> <location gps='42.363000 11.184300'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363100 11.184100'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363000 11.184400'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363100 11.184500'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363100 11.184200'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363200 11.185100'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363200 11.184100'>Porto Ercole - Punta
> Finestra</location>
> <location gps='42.363200 11.184100'>Porto Ercole - Punta
> Finestra</location>
>
> When I dive with a rubber boat I start the companion app in advance so
> I don't know if I will go on a known spot.
> I will merge these one regardless of the gps point. They are exactly
> the same on different date.
>
> <location gps='42.251600 11.116300'>Isola di Giannutri - Punta San
> Francesco</location>
> <location gps='42.251700 11.116500'>Isola di Giannutri - Punta San
> Francesco</location>
> <location gps='42.251600 11.116300'>Isola di Giannutri - Punta San
> Francesco</location>
> <location gps='42.251600 11.116300'>Isola di Giannutri - Punta San
> Francesco</location>
>
>
>
> --
> Davide
> https://vimeo.com/bocio/videos
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>
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