Description Usage Arguments Details Value Author(s) See Also
These functions provide convenient pattern finding and substitution for multiple patterns.
1 2 3 4 |
patterns |
A character vector of patterns. |
replacements |
A character vector of replacements; must be of the same length as |
x |
Character vector of strings in which the pattern finding and replacements should be carried out. |
sort |
Logical: should the output indices be sorted in increasing order? |
invert |
Logical: should the search be inverted and only indices of elements of |
... |
Other arguments to |
For each element of x
, patterns are sequentiall searched for and (for multiSub
and
multiGSub
substituted with the corresponding replacement.
multiSub
and multiGSub
return a character vector of the same length as x
, with all
patterns replaces by their replacements in each element of x
. multiSub
replaces each pattern in
each element of x
only once, multiGSub
as many times as the pattern is found.
multiGrep
returns the indices of those elements in x
in which at least one of patterns
was found, or, if invert
is TRUE, the indices of elements in which none of the patterns were found.
multiGrepl
returns a logical vector of the same length as x
, with TRUE
is any of the
patterns matched the element of x
, and FALSE
otherwise.
Peter Langfelder
The workhorse functions sub
, gsub
, grep
and grepl
.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.