The data reduction algorithm used by Citadel for logging values inherently assumes that only the absolute magnitude of the change is relevant; that means that a single value for the resolution and the deadband is sufficient for the whole value range to be monitored.
There are situations, though, where the underlying value could span several orders of magnitude. In such cases, it would be useful to set deadbands on the minimal relative change, instead.
The current workarounds are either to reduce the deadband to a tiny value (thus logging much more large data than needed) or to log the logarithm of the value, but that involves an additional step in writing to the SV/reading histories. It would be nice to have a built in option for that.
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