Reorder spreads question

How would it be possible to do the following:

I have two incoming spreads of values, whose indicies i’ll represent as

123456789
ABCDEFGHI

and I want to interleave them with a binsize of 3, so I get

123ABC456DEF789GHI

Also I want to be able to deal with an arbitrary length (currently I have 10 ‘rows’ of data, i.e. each incoming spread has 30 values)

I think a similar question has been asked before but I cant see it in the forums

hey, try SwapDim (Spreads) with a Cons (Spreads) .

there is also a User Tutorial