So here’s the task:

I want to add up a spread of values so that the resulting spread contains the sum of slices 0-1 in the first slice, the sum of slices 0-2 in the second, the sum of slices 0-3 in the next slice and so on.

I tried to use +(spectral) with a custom bin size but the value get screwed up because the bin size doesn’t seem to always start counting at slice 0. So that if I “ask for” a bin-size of three for the third result-slice, it actually adds the third slice and then adds the other slices from the beginning.

Is there another way to achieve this?

SpectralNotSpectral.v4p (5.8 KB)