zipsorted: Zip sorted arrays against each other
In shabbychef/zipper: Zip Sorted Arrays Together

Description Usage Arguments Details Value Note Author(s) Examples

Given two sorted arrays, x and y, find indices L that ‘zips’ the two together.

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zip_le(sortx, looky)

zip_lt(sortx, looky)

`sortx`	a sorted array of ‘reference’ values.
`looky`	a sorted array of values whose place among `sortx` is to be found.

For example, for zip_le, we find the array L of the same length as y such that there are exactly L_i elements of x less than or equal to y_i.

a vector, filled out as follows:

zip_le: Returns the vector L such that there are exactly L_i elements of x less than or equal to y_i.
zip_lt: Returns the vector L such that there are exactly L_i elements of x less than y_i.

Returns zero when there are none, as expected.

it would be better if this code supported mixed types of sortx and looky.

Steven E. Pav shabbychef@gmail.com

set.seed(1234)
x <- sort(rnorm(1e5))
y <- sort(rnorm(1e2))
idx1 <- zip_le(x,y)
# slow way, should give the same answer
uther <- rep(NA,length(y))
for (iii in 1:length(y)) {
  uther[iii] <- sum(x <= y[iii])
}