Find ranges in Matrix

问题

There is a vector of numbers like

c(3,10,24,29,37)->k

and a table

    c(1,3)->l1
    c(9,12)->l2
    c(24,27)->l3
rbind(l1,l2)->ll
rbind(ll,l3)->l3

   [,1] [,2]
l1    1    3
l2    9   12
l3   24   27

how can I find which of the numbers in the vector are in the range of the table. Here the result would be 3,24 and 10. Maybe just the indices of these numbers...

回答1:

You can try sapply with any and the conditional statements:

indx <- sapply(k, function(x) any(x >= l3[,1] & x <= l3[,2]))
k[indx]
[1]  3 10 24

来源：https://stackoverflow.com/questions/35012734/find-ranges-in-matrix