| loceq {lazy.tools} | R Documentation |
Returns the locations of the elements of the first argument whose values are equal to one of the elements in the second argument
Description
Returns the locations of the elements of the first argument whose values are equal to one of the elements in the second argument
Usage
loceq(a, b, keep = 1)
Arguments
a |
vector |
b |
vector |
keep |
= 1 not to sort the result |
Details
loceq( a, b, keep=0 ) is equivalent to
which( match(a,b, nomatch=0) > 0 )
or
which( a %in% b ) .
loceq(letters, c("x","cc","a")) returns c(24,1)
With keep=0, the result will be sorted according to the order
of appearance in the first argument.
loceq(letters, c("x","cc","a"), 0) returns c(1,24)
If subset below contains a subset of the variable names of
a data frame,
loc=loceq( colnames(dataframe), subset )
wii return the location of those variables.
It will return 0 if no match.
Value
vector consisting of the locations of the elements of the first argument whose values are equal to one of the elements in the second argument, or 0
Examples
loceq(letters, c("x","cc","a"))
loceq(letters, c("x","cc","a"), 0)
loceq(c("x","cc","a"), letters)
loceq(c("x","cc","a"), letters, 0)