dhis2-devs team mailing list archive

[Calle Hedberg <calle.hedberg@xxxxxxxxx>]

Hi,

Design flaw: Min-max values should never be negative - I think DHIS 1 had 0
as the lowest relevant value since the start back in the late 90's. Easy to
implement...

Regards
Calle

On 18 September 2015 at 12:18, jason.p.pickering <1065014@xxxxxxxxxxxxxxxxxx
> wrote:

> 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
>
> --
> You received this bug notification because you are a member of DHIS 2
> developers, which is subscribed to DHIS.
> 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.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/dhis2/+bug/1065014/+subscriptions
>
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Calle Hedberg

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