Create mixer plugin

[asoderq]

Suggestion, create a mixer plugin which consumes two NDArrays and produces one. It could implement several mixer functionalities, such as: max, mean, diff...

It would need two NDArray queues. Do you see any issues with this?

I have no applied usecase for this, it would just be nice to use with two simdetector drivers to create more complex test data. For example mixing two gaussian peaks, to get more realistic data which are close to a gaussian, but not quite. Can this be accomplished with any existing features?

[ericonr]

From https://github.com/areaDetector/collaboration/blob/master/2025-11-06.md

the problem mentioned by the issue can be implemented as a combination of Gather and Process plugins, using the N/N-1 functionality

a mixer plugin could go further by implementing things like geometry aggregation from detectors with separate data streams (such as Lambda)