StdQC question

[Steve2Q]

Hello: I am using v 3.8.2. I currently have the StdQC value set for outHumidity= 50, 100 and it is working properly. My question is this: Is there a way to have rate of change rather than set boundaries to be used? I think the answer is NO, but I wanted to check.

Thanks, Steve

[gjr80]

Hi Steve,

Unfortunately you are correct; StdQC does a simple check that an obs falls between or is equal to the specified min and max values. So nothing can be done with rates of change short of writing your own custom StdQC. There was some work a good many years back on a 'spike detector' for StdQC (refer issue #3) to filter out spikes in a given obs, but nothing became of it in the end.

You can sometimes achieve more complex checks via StdCalibrate, but you only have obs from the current record/packet available to play with; nothing from earlier packets/records which makes rate of change calculations difficult.

Gary

[Graham Eddy]

someone could develop a ‘filter’ service that could hold state (either in memory or private database) of successive readings.

conceptually an extension of StdQC

⊣GE⊢

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