Gases in divelist

[Robert C. Helling]

On Sun, 17 Mar 2013, Dirk Hohndel wrote:

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

> And of course there are the computers like the OSTC that always give you
> all defined gases and aren't air integrated. What do do for that? Show
> all? Show only those that have a gas change event?
>
> As I said - complicated.

Agreed. But as there is now the possibility to add the gaschanges 
manually, I thought that would be the time to use these events to decide 
this question. Of course, we could make this configurable ("Show all 
gases/Show gases used").

As I said earlier, the problem arose in particular from a OSTC user: Since 
he had set a trimix gas is his computer, suddenly all his dives appeared 
as trimix in the dive list. I have a hard time considering this the 
correct behaviour.

IIRC the OSTC differentiates between gases listed and gases used. We could 
as well define a gas as used if at least one of the following holds:

1) Index is 0.
2) There is a gaschange to this gas.
3) The dive computer marks this gas as used (I don't know if 
libdivecomputer reports this).

What do you think.

Robert

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Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics
                       Scientific Coordinator
 		      Ludwig Maximilians Universitaet Muenchen, Dept. Physik
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