Stefan, > On 17. Sep 2017, at 22:47, Stefan Fuchs <[email protected]> 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.
We have to look into this a bit more to properly understand it. It could well
come from the way that we adopted the VPM model to work for logged dives (which
do not have a well defined bottom time and then stops). Maybe Rick has some
ideas, he wrote that part.
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
Delete all computed waypoints ceiling normal again
Save, no spike
Best
Robert
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Robert C. Helling Elite Master Course Theoretical and Mathematical Physics
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