Graph documentation [was: Re: Meaning of GF settings]

[Jan Schubert]

On 01/08/13 21:01, Linus Torvalds wrote:
> On Tue, Jan 8, 2013 at 11:49 AM, Pierre-Yves Chibon <pingou at pingoured.fr> wrote:
>> Attached are the two first dives I did with my computer, the first dives
>> of the trip as well.
>> We did have a deco stop during the second dive (#9) but we 'only' did
>> the safety stop 3min/3m during the first dive (#8)
> Ok, that doesn't look horrible, and I think it's just a result of the
> default parameters set to "somewhat conservative"

I agree saying that it does not look that unhealthy. And there might (!)
still be some unwanted features in the code as all of my dives using the
dive computer generated deco also ends before the ceiling calculated by
subsurface.

>
>> I used the default parameters btw (GFlow 30 and GFhigh 75).
> If those are more conservative than even a suunto, I suspect we should
> make them less so for the default "show" to not make people worry.
>
> Then, for dive *planning* we should probably default to something very
> conservative indeed. I dunno.

I wouldn't do so (now) but just wait what happens to the deco
calculations in the next days when we get more knowledge about the
missmatchings.
Just a note: Suunto is not using Bühlmann and GF settings at all but
RGBM which has a little different approach and might (!) allow divers
surface earlier than Bühlmann in case it thinks there are no
(mentionable) bubbles in your tissues. There are dive computers around
which implements VPM backed up with a Bühlmann GF High of 95% to avoid
such occurences and to be really sure from both worlds.


Jan