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Collect per tank SAC rate

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This is a bit painful, but we basically walk the samples and pick the
valid tank from the events. And then we do a simple discrete integration
to figure out the mean depth per tank and duration per tank. And then we
assemble all that into per tank statistics.

Strangely the value calculated here seems slightly higher than one would
expect from the overall SAC rate. This inconsistency should be
investigated a bit further, but my guess it it's based on the assumption
that the DC provided mean depth is possibly more accurate than what we can
calculate from the profile.

Fixes #284

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2013-11-19 22:50:02 -08:00
parent 36cb50fb37
commit 0ca12c3601
4 changed files with 65 additions and 3 deletions
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dive.h
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@ -661,6 +661,7 @@ extern void copy_samples(struct dive *s, struct dive *d);
extern void fill_default_cylinder(cylinder_t *cyl);
extern void add_gas_switch_event(struct dive *dive, struct divecomputer *dc, int time, int idx);
extern void add_event(struct divecomputer *dc, int time, int type, int flags, int value, const char *name);
extern void per_cylinder_mean_depth(struct dive *dive, struct divecomputer *dc, int *mean, int *duration);
/* UI related protopypes */