Not a bug per se, but as you note but rather the nature of the min/max
value generation algorithm, which is based on a number of standard
deviations from the mean of the data values.
Work around is to specify the min/max values your self according to your
own custom algorithm.
** Changed in: dhis2
Status: New => Opinion
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https://bugs.launchpad.net/bugs/1065014
Title:
Min/Max generation goes into negative
Status in DHIS:
Opinion
Bug description:
A very minor bug, but the min/max generation algorithm (which I assume
is some std. dev) sometimes leads the minimum to be a negative number.
Probably not an issue per se for data quality, as the alternative
would be to set it to 0 (unless there is a reason why you would enter
negative numbers), but the chart you get when you double-click a data
entry field is then skewed and does not look very sensible. In extreme
cases, with a few very high values and a few months with very low (as
when you have campaigns or hand-outs), the minimum can be down to
minus a lot.
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