Topic: Utilities

Topic Description:

Basic R utilities used in many packages and functions, such as date and string manipulations, statistical distributions, geometry of lines and distances. The R package date is required for the two data functions.



File: utilities/utilities.r

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Function: logical.grep

Function Description: logical.grep

A form of grep returning logical instead of indices (numbers).

Function Arguments:

ArgumentDefault Value
needle
haystack

Function Source:

logical.grep=function(needle,haystack)
{
result=rep(FALSE,length(haystack))
result[grep(needle,haystack,fixed=TRUE)]=TRUE
return(result)
}