[PATCH 2/2] Ticket #831 Fix

[Joakim Bygdell]

On 10 March 2015 at 10:19, Davide DB <dbdavide at gmail.com> wrote:

> On Tue, Mar 10, 2015 at 6:52 AM, Joakim Bygdell <j.bygdell at gmail.com>
> wrote:
> >
> > The default cylinder setup is more suited to people that do not dive the
> way you do, since the way you describe it you rarely start a dive on
> backgas.
> > It's just a way to make it convenient for people that doesn't have as
> complex setup.
>
> I see, but I'm nearly sure that the whole procedure was ok until few
> releases ago.
> I remeber Dirk had a brilliant idea and modified how the cylinder table
> works.
> Maybe the introduction of the tank index put some strict constraints
> again or maybe I was doing exactly the same sequence each time. Now
> that I have "convinced" several friends to use Subsurface, my phone
> keeps ringing and ringing :)
>
> >> In my above example:
> >>
> >> I made a formal gas change at the surface switching to a 35/25
> >> At 30m I switched to my bottom mix: 16/60 on a AL80 [**]
> >> Deco was performed on 35/25, 50/20 and 100%
> >> My backgas was a D8,5L on 16/60 (that is set as default tank in
> >> Subsurface). It's my bailout reserve, my main tank.
> >>
> >> [**] I could have more f this.
> >>
> >> Should I remove the default cylinder to be able to switch at 0 at 0?
> >> If I had a proper DC managing all of this and I forget to press a
> >> button, could I fix all of this later? Hummm....
> >
> > When you set up the cylinders for that dive make sure that the one you
> start with are the first gas in the list, the order of the other mixes is
> not as important.
> >
> > At the start of the dive subsurface will implicit start you on 35/25 as
> that is the first gas in the list.
> > You can then do gas switches at the appropriate time points during the
> dive.
> >
> > If you do this, is it something that is wrong in the way the dive is
> presented to you?
>
> I have to try.
> The gas change at 0 at 0 was suggested here to overcome the default cylinder.
> I should completely remove default cylinder. Its' a shame. Default
> cylinder along copy-paste are two useful tools to speed-up logging
> operations.
>

I think you have misunderstood what the default cylinder setting does.
If you have AL80 as your default cylinder then all cylinders that are added
to a particular dive will have the properties of an AL80; 11,1l, 207bar.


> When I get stuck in some dead, usually I directly edit the xml file
> but two friends of mine who are Subsurface new adopter were caught
> immediately into the "current gas is in use..." dead end without being
> able to solve it.
> Copy-paste was a Linus brilliant idea to avoid inserting each dive all
> the tanks. Others (like me) suggested having predefined cylinder sets
> saved into user preferences but this solution implied a whole new UI
> and Linus solution it simple and effective.
> Currently it become a dangerous option because if you copy-paste a
> slightly different tank set your gas changes will likely get screwed
> up mainly because the cylinder index get copy-pasted too.
>

How will the gas changes be altered if you paste cylinders into the table
since you need more than one cylinder in the table in order to make a gas
switch.
Unless of course that you add cylinders, assign switches and then paste the
information from an older dive.


> Why it's compulsory to have a cylinder into the cylinder table?
>



//
Jocke
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