I have just realized I probably misspoke and invented a problem!
I made a mistake of looking the start time of the graph and assuming it to be
27 hours ago! It is not since graph steps in 3 hours intervals.
Since I was working on this some time between other things I do, timeline (my
reports) changed in the meantime and I failed to take that into account.
Span actually works as advertised taking NOW as a reference point. And does it
literary. Graph is not. And both work fine.
Am I right to say I was wrong?
Na 7. listopada 2019. 11:31:59 CEST, mrzimgjugl asdf <mrzimgj...@gmail.com>
wrote:
>Thanks to Andrew Milner, I can now fix wrong min/max lines using span
>with
>delta. Now min/max correspond mostly with the graphs above them. Good
>thing
>WeeWX is almost escellent and almost anything can be achieved with it.
>So,
>I am expecting this should be fixable.
>
>Using span delta, I am getting some wierd results not seen on the
>graphs
>directly above to which I tried to sync these min and max lines.
>
>Problem may be with the reference from which span delta starts and that
>
>reference seems not to be NOW. Possibly, the midnight before NOW is
>taken
>as a reference and starting point for the span? I can see the problem
>in
>many cases. How to fix that?
>
>Current report was generated at monday 9:15. Graph correctly starts at
>9:00
>at Sunday and it just added new segment after 9:00 monday, so it shows
>27
>hours. I have modified summary min/max text below the graph into:
>
>max: $span(hour_delta = 27).outTemp.max at $span(hour_delta =
>27).outTemp.maxtime.format("%A %k:%M")<br/>
>min: $span(hour_delta = 27).outTemp.min at $span(hour_delta =
>27).outTemp.mintime.format("%A %k:%M")
>
>But the text says:
>max: 25,6°C at Sunday 15:25
>min: 15,0°C at Sunday 6:55
>
>Sunday 6:55 should be out of scope since I generated report at monday
>9:15.
>I do not see in manual a precise definition what is the starting point
>for
>span delta. So, I estimate it is not using NOW as the end starting
>point
>but something else.
>
>My question: what is the reference point in time for commands like:
>$span(hour_delta=27)
>$span(day_delta=7)
>$span(day_delta=30)
>
>I want spans to summarise the same period as the graphs above them.
>They
>all summarise form the moment when the report is generated back for
>given
>time: 27 hours or 7 or 30 days. Not take entire calendar days from the
>last
>midngiht or something like this. I even tried to give all spans in
>hours,
>but I do not think that helps. This is not the simplest issue to test.
>
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