Re: Dive planner problems

[Willem Ferguson via subsurface]

On 2022/02/08 00:17, Michael Andreen wrote:

The problem seems to be what JB2Cool mentioned in the previous thread. You
have the planner deco pO2 set to 0.60 instead of 1.60. The available gases
shows both Bot. MOD and Deco switch at. The Bot. MOD uses the Bottom pO2 and
18m for 50% and 4m for 100% seems fine. The deco switch at uses the Deco pO2
and in your case it shows nonsense -3m for oxygen. I've recreated your plan
with Deco pO2 set to 0.60 and 1.60 and the 0.60 matches your values.

/Michael


Problem solved. As indicated previously, my finger trouble. Have no idea 
how the preference was set to pO2=0.6


Thank you, Michael.

wf



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restarting our FAQ

[Dirk Hohndel via subsurface]

Hi everyone

The FAQ on the old website is horribly out of date and hasn't been maintained 
in forever.
Instead of trying to deal with the completely defunct WordPress site (the 
website is actually a static export of the old WordPress site since I was 
unable to keep up with the thousands of automated hacking attempts) I created a 
new FAQ for our GitHub pages.

Which means everyone can contribute!

The syntax is... an acquired taste - I'm sure there would have been a better 
way to do this. But hey, it works.

This is the user visible site: https://subsurface.github.io/faq/
And this is where the sources are: 
https://github.com/subsurface/subsurface.github.io/blob/master/faq.MD?plain=1

I'd love feedback, improvements, contributions.

Thanks

/D
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Re: Dive planner problems

[Robert Helling via subsurface]

Willem,

> On 7. Feb 2022, at 20:22, Willem Ferguson  > wrote:
> 
> See attached image of a normoxic OC dive. The problem is that the MOD values 
> are not calculated correctly. Given that the dive preferences have been set 
> to a Max PO2 of 1.6 bar, the expected MOD for O2 is 6m and for EAN50 it 
> should be 22m. But it gives the MOD as 4m and 18m respectively. That is 
> erroneous. There appears to be no way to convince the planner otherwise.

the planner has it’s own settings for the maximal pO2, separate for the bottom 
time and the deco part of the dive. The MOD in the gas table is computed with 
the bottom pO2. In you screenshot I cannot see those values.

Best
Robert


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Re: Dive planner problems

[Robert Helling via subsurface]

Hi Willem,

> On 7. Feb 2022, at 20:22, Willem Ferguson  
> wrote:
> 
> See attached image of a normoxic OC dive. The problem is that the MOD values 
> are not calculated correctly. Given that the dive preferences have been set 
> to a Max PO2 of 1.6 bar, the expected MOD for O2 is 6m and for EAN50 it 
> should be 22m. But it gives the MOD as 4m and 18m respectively. That is 
> erroneous. There appears to be no way to convince the planner otherwise.
> 
> Now the mystery is that I have downloaded Subsurface AppImages going back to 
> V4.9.3 and in all versions that I tested this behaviour is consistent. I use 
> the planner rather frequently and I did some planning before upgrading to 
> V5.0.6 and those plans were not problematic. I am not absolutely sure which 
> version I had before 5.0.6, but I am reasonably sure it was 5.0.5. I can only 
> assume that the planner accesses the preferences file and gets some 
> information there that is not used correctly. I am at a loss to explain this 
> behaviour, even in older versions. Consequently I have this nagging fear that 
> it is finger trouble on my side and I am making a fool of myself.

currently, I am somewhat busy. I will look at it, as soon as I have some time. 
I am sure, there is a simple explanation, this used to work.

Best
Robert


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Re: Subsurface dive planning issues

[Willem Ferguson via subsurface]

Definitely not. It was ok until 5.05 as far as I am aware.

Thanks, Berthold.

wf

On 2022/02/07 12:02, Berthold Stoeger wrote:

Dear Willem,

On Montag, 7. Februar 2022 07:43:24 CET Willem Ferguson via subsurface wrote:


See attached image of a plan for a normoxic pSCR dive. There are
important problems, possibly bugs?

Recently, there have been massive changes of the profile and cylinder-model
code (as in nearly total rewrite). Since I don't use the planner, it is not
unlikely that I introduced bugs during that process.

Could you please check if the bugs exist older versions, say of one year ago?

Thank you,

Berthold





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Re: Subsurface dive planning issues

[JB2Cool via subsurface]

The deco pO2 is set to 0.6 rather than the expected 1.6, that's what's
stopping you from using a richer mix.

Jason

On Mon, 7 Feb 2022 at 10:03, Berthold Stoeger via subsurface <
subsurface@subsurface-divelog.org> wrote:

> Dear Willem,
>
> On Montag, 7. Februar 2022 07:43:24 CET Willem Ferguson via subsurface
> wrote:
>
> > See attached image of a plan for a normoxic pSCR dive. There are
> > important problems, possibly bugs?
>
> Recently, there have been massive changes of the profile and
> cylinder-model
> code (as in nearly total rewrite). Since I don't use the planner, it is
> not
> unlikely that I introduced bugs during that process.
>
> Could you please check if the bugs exist older versions, say of one year
> ago?
>
> Thank you,
>
> Berthold
>
>
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Re: Subsurface dive planning issues

[Berthold Stoeger via subsurface]

Dear Willem,

On Montag, 7. Februar 2022 07:43:24 CET Willem Ferguson via subsurface wrote:

> See attached image of a plan for a normoxic pSCR dive. There are
> important problems, possibly bugs?

Recently, there have been massive changes of the profile and cylinder-model 
code (as in nearly total rewrite). Since I don't use the planner, it is not 
unlikely that I introduced bugs during that process.

Could you please check if the bugs exist older versions, say of one year ago?

Thank you,

Berthold


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