Convert between parallel vectors and lists
The zipup and zipdown functions convert between two
parallel vectors and a list of doublets (elements of length 2). The
metaphor, borrowed from Python's zip, is that of a zipper. The
zipup function interleaves the elements of the parallel vectors
into a list of doublets. The inverse operation is zipdown,
which returns a Pairs object.
zipup(x, y, ...) zipdown(x, ...)
x,y |
For |
... |
Arguments passed to methods. |
For zipup, a list-like object, where every element is of length 2.
For zipdown, a Pairs object.
Pairs objects.
z <- zipup(1:10, Rle(1L, 10)) pairs <- zipdown(z)
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