Planner doesn't care about MOD of first gas

[Dirk Hohndel]

On Mon, Jun 02, 2014 at 06:41:23AM -0700, Dirk Hohndel wrote:
> > While the subsequent gas changes look like they're doing the right
> > thing, it doesn't seem to care about the ppO2 of the first gas. See
> > the attached screenshot, there is nothing telling me that taking 40%
> > nitrox to 44m (a ppO2 of 2.2) may not be a good idea. You can take it
> > to sillier values than that.
> 
> Correct. The manually added gases are not checked. You can turn on the
> ppO2 graph and it will show you that you are doing something stupid, but
> we are not doing anything beyond that.
> Would be very easy to add, though.

I added that - let me know if this is what you had in mind.

> > On a related note, is it possible to set a different max ppO2 for back
> > gas and deco gas? I don't know the best way of going about this
> > without making it overly complicated. Getting subsurface to tell the
> > difference between the two may be an issue. Perhaps another column to
> > the available gas table where the max ppO2 can be manually edited so
> > the user can set a value of 1.4 for back gas and 1.6 for deco?
> 
> That's a good idea. Again, it adds to the configuration complexity, but
> it's something that I do for my own diving, so it must be important :-)

Playing with this some more - the easiest way to do this is for you to
manually override the change depth for your deco cylinders.

> > The other obvious thing in the attached screenshot, but I think this
> > one is known, is that the gas pressure graph does not drop over the
> > dive, despite having set my SAC, and cylinder size.
> 
> It should. I'll have to look into that.

This was an embarrassing typo. I'll push the fix in a minute.

Thanks for catching this!

/D