Hi every one..! when on the video say "this function assume calculate per day". could I consider all the function asssume per day??
Is "the function" TagTot() ? I'm assuming it is, to my knowledge it's the only one that requires a conversion factor. The time weighted TagTot() (by default it is time weighted) performs a time integral. It's mainly used to calculate the total of a unit of rate.
To give a simple example, consider a data point with units m3/s.
Performing TagTot('data point', 'StartTime', 'EndTime') will return the number of m3 in the time range [StartTime,EndTime]. The PI Data Archive assumes the units are m3/day not m3/s.
Let's say the area under the 'data point' curve is a perfect rectangle in the time span t ([StartTime,EndTime]).
The time integral would be:
Y m3/s * t day... where t is in day (this is what the PI DA assumes).
So you need to use a conversion factor:
60s/min * 60min/hour * 24hour/day = 86 400 s/day
Y m3/s * t day * 86 400 s/day = 86 400Y m3
Of course, if the area under the curve isn't a perfect rectangle, than Y is replaced by a time integral.
You can some information here:
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