I had the need to get the average value of a number of payloads, and hoped the Smooth node would let me do this. But I found it emits a message for every incoming message once the previous message buffer is full, resulting in a running average of the previous N payloads. This is no doubt very useful…

I am having difficulty thinking of an application where this feature would be useful. Can you suggest an example?

Yes, it works with all of the mean/min/max/stddv methods (and is ignored for the high/low-pass methods) - tests now added for min & max. As for applications, my intial requirement was the averaging of X number of samples from an accelerometer for the purpose of calibrating the axis offsets. I can im…

[image] clickworkorange: my intial requirement was the averaging of X number of samples from an accelerometer for the purpose of calibrating the axis offsets. I can imagine many more situations where a reduced number of average or min/max values are needed - graphing high frequency data for exam…

normally a running average of some sort would be used Not if you want to reduce the number of datapoints on the chart, for performance or display reasons.

one can use a Delay node in rate limit mode, discarding intermediate messages Ah yes, that makes sense. Would this also work if you wanted to plot the min/max values? Or the standard deviation?

[image] clickworkorange: Would this also work if you wanted to plot the min/max values? Or the standard deviation? I don't see why not

[image] Adding a "reduce" option to the Smooth node Feature Requests I don't see why not Ok, in that case perhaps it's time to stop flogging this horse. PR closed. Apologies for wasting everyone's time!

[image] clickworkorange: Not if you want to reduce the number of datapoints on the chart, for performance or display reasons. I think this is the key requirement, at least for many of my use cases... Rate limiting is useful only in real-time processing, but most of my applications are built …

Adding a "reduce" option to the Smooth node

Core Development Feature Requests

Colin 6 September 2019 13:21 11

That is I meant, one can use a Delay node in rate limit mode, discarding intermediate messages on the feed to the chart. Though I did not put it completely explicitly.

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Adding a "reduce" option to the Smooth node

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