Need help on history aggregation mode

Ignition
1

Hi

I face some issue with history aggregation mode. I have a tag with steady value of 100 all the time.

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When I try to get minimum, maximum and range of the signal in time range it return 100 for all of them.
I wonder why it return 100 instead of 0 for range aggregation mode???
I define signal with following setting:
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I also try to enable prevent interpolation and get Null for Range.
Could some one please help me and tell what is happening here.
Thanks

2

It seems the interpolation doesn’t work correctly. The aggregation analyse only work with real record not interpolation value. I wonder it’s a bug or I miss something here.

3

Here is another example with even available record but still wrong result:

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