I want to calculate an equation with 3 variables. The variable are coming asynchrone so I have to stor the latest values and then calculate the equation. Then output the result. Then wait for a new next value and then calucate with the new incoming value and withthe former two values that not have b…

sounds like you will need to use context variables

see the example here [image] Output two attributes in the template Dashboard Which is why I also suggested you look at how to store data. It sounds as if you want both values to be stored. So that when new message comes in for door it picks up the latest value of help …

[image] zenofmud: sounds like you will need to use context variables Or alternatively use the Join node, which saves the hassle of working out when you have got all three values and so on. Set it to generate key/value pairs using topic as the key, waiting for three topic values before sendin…

Or alternatively use the Batch node. Configure the node to group three messages, overlapping two. This results in the node accumulating the first 3 messages and afterward sending the last two plus the new incoming payload. In other words, do the same as Colin said about the Join node. I just wanted…

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Function with different values in different times

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ukmoose 21 December 2018 10:55 3

see the example here

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Function with different values in different times

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