Spikes: Please try this patch

[Stefan Fuchs]

Hallo Robert,

Am 18.09.2017 um 10:39 schrieb Robert Helling:
> Stefan,
>
>> On 17. Sep 2017, at 22:47, Stefan Fuchs <sfuchs at gmx.de
>> <mailto:sfuchs at gmx.de>> wrote:
>>
>> I see a somehow unexpected result:
>> The situation that the plotted ceiling changes in respect to the
>> spike being present or not when clicking at the dives in a different
>> sequence is gone. So resetting additional things seems to be the
>> correct approach because the result of the deco calculation really
>> shouldn't depend on the sequence the dives are selected.
>>
>> But: The spike is now only gone for the one specific dive (#710 in my
>> example) where I discovered this "unstable" results. Many of my other
>> dives now still always show such a spike at the beginning of the deco
>> ceiling exactly as before.
>> I have the fear we see two different issues here.
>> I now discovered s.th <http://s.th/>. else which could help solving
>> the issue: If a plan a dive in the planner the deco ceiling displayed
>> shows no spike. If I save the dive and the very same profile is
>> displayed outside the planner in the "normal" main window view the
>> spike is there. I will send you some pictures tomorrow and try to
>> generate some debug output.
>>
>> One more important hint I maybe didn't mention up to now: The spikes
>> in the profiles are only present if I enable " show ceiling in 3m steps".
>
> Ah, that’s an important clue: Turning on the steps let’s be see the
> spike as well. Apparently, it comes from the 5min tissue which has a
> ceiling of a few centimetres which gets rounded to 3m.
>
> Another observation:
>
> Start from an empty log. Plan a VPMB+2 dive to 30m for 20m. -> no spike
> Save. In the logbook, this dive has a spike.
> Edit dive in planner, spike gone.
> Save again, spike still gone.
> Save to xml, quit subsurface
> Open Subsurface with this dive: spike reappeaered.
> *Edit dive in planner: much less ceiling*
Yep, this "much less ceiling" thing on replan until you delete the
planner generated waypoints is something I recognized yesterday as well.

Good that you can reproduce all this now as well. I guess there is for
the moment no more need to create some screenshots or further docu from
my side?
Or shall I at least update the issue on Github with the latest findings?
Let's hope you or Rick can figure out where this comes from...

Thanks!

Best regards
Stefan

-- 

Stefan Fuchs
E-Mail: sfuchs at gmx.de <mailto:sfuchs at gmx.de>

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