[PATCH] Show single dives in map.

[Dirk Hohndel]

"Robert C. Helling" <helling at lmu.de> writes:

> On Tue, 15 Jan 2013, subsurface at henrik.synth.no wrote:
>
>> This adds a "Show in map" entry in the dive list context menu.  It will
>> zoom to the dive location if it exists, otherwise the full map will be
>> displayed.
>
> How do you guys get the GPS coordinates for your dives? Given that GPS 
> under water is useless I would expect not too many dive computers have a 
> GPS receiver. Thus for me it would be most important to be able to use the 
> map to add coordinates to the dive.

Some dive computers allow you to type GPS coordinates in. But the real
goal for me is to continue to work on integration of the Android
Subsurface Companion app (maybe someone will write one for iPhone,
too). The idea is simply. At a dive site, you start the app, enter the
name of the site and it transfers the GPS location plus name to a
webservice (we have a sample service running at api.hohndel.org).
Then Subsurface connects to that service and matches the time stamps of
those GPS fixes with the time stamps of your dives and adds the GPS
location. That last part is still missing...

> In my past logbooks, I always had two entries: dive site and point of 
> entry. The dive site can for example be a lake and that can have several 
> points of entry (typically a few 100m apart so you rarely dive from one to 
> the other and often each with their own character wrt artefacts and 
> topology you encouter etc). I guess the GPS coordinates would be per dive 
> site.

It turns out that different divers and different types of dives have
extremely different characteristics.

Some divers do lots and lots and lots of dives at exactly the same dive
location. I literally have 50+ dives that are exactly at the same spot -
it's the training facility I work with that has a house right on Hood
Canal in Washington State and we always dive right in front of the
house.

Other divers do mostly boat dives where usually every dive has a
different GPS coordinate. Funnily enough, I have more than a hundred
dives of that flavor.

And there are many other options (like the "same site, but not exactly
the same spot" you mention above).

So far I decided not to try to over engineer things. I put the coarse
location ("Hoodsport, WA, USA" or "Larnaca, Zyprus") in the trip
location and the name of the actual site in the dive location. And then
want to have GPS coordinates attached to the specific dives (where
useful).

/D