Statistics from existing values

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I’m looking for some statistic values out of pimatics already trended variables.

To switch some settings of my central heating system I would like to get the average of outside temperature from last 5 days for example.
In detail: My heating burner has a switch to change from summer to winter setting. My idea is to give an indicator with message when it becomes could for some days in series. First only manually change the switch, later maybe a direct pimatic connection.
If the average temperature of a day (whole day+night) drops down ~ 10…15°C it’s time to start the heating system in winter setting because the house cools down after 3…5 days.

This is just an example but could imagine a lot of similar rules can help doing some stuff automated.
Therefore not only AVG but maybe also MIN/MAX … stats could do some jobs.
I know this as an regular function for cyclic logged values in different industry automation systems and used them quite a lot there.

Could this be useful for you?

isn’t that what pimatic-filter is already donig?

@leader21 said in Statistics from existing values:

isn’t that what pimatic-filter is already donig?

Well, not exactly. It does filtering, but it does not hightlight stats like min/max and mean (average).
But this is a nice and easy to implement extension of pimatic-filter
I’ll put this on my todo list

ahhhh grrrrrrrr…
Didn’t know this plugin … have to read some more next time …
There are so mutch Plugins, they already confusing me.

@mwittig Would be great if you could extend the functions in filter for this and write a small example or HowTo

Thanks boys!

and maybe we need some kind of filter or structured overview for the plugin menu to “bundle” plugins that are similar in function. so we could have something like a comprehensive view
just my 2 cents …

@mwittig
If I understand the source code of pimatic-filter correct, the array is empty at startup and will be filled as soon as the variable or expression changes.

Is there a way to query the sqlite-db to fill the array at pimatic startup?

Edit: my bad. This could only be used for variables, not for expressions.

@Marie Sorry, I missed this one. I think it is possible, but I am not sure how. I’ll investigate.

https://github.com/mwittig/pimatic-filter/issues/7

https://github.com/mwittig/pimatic-filter/issues/8

For info I have released pimatic-filter@0.9.0 which supports statistical attributes which can be added easily to the device configuration. Moreover, a new filter for Simple Rate of Change is available which has been contributed by @thex. Thanks!