Hi guys,
We often need to iterate over the cartesian product of two dimensions, like
sample X chromosome. This is preferable to nested iteration, which is
complicated. I've been using expand.grid and bpmapply for this, but it
seems like this could be made easier. Like bpmapply could gain a CARTESIAN
argument with a list of arguments to multiply? But somehow you would want
the resuls combined in a way that does not require generating the product
manually. Maybe a list of lists? We need to think more about the
combination step, in general.
Michael
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