select_by_file_extension {chillR}

Select string that end in a particular way (e.g. a certain file extension)

Description

Sometimes it makes sense to apply a function to several files in a folder, but only to those of a particular file type. This function can selects all elements in a vector of strings that end in a particular way, e.g. on a common file extension.

Usage

select_by_file_extension(strings, file_extension)

Arguments

strings

vector of character strings for elements to be extracted from.

file_extension

character string specifying the extension of the file type to be selected. This can also be any other trailing string that marks all vector elements to be selected.

Value

subset of the strings vector that only contains the elements that end on file_extension.

Author(s)

Eike Luedeling

Examples

  select_by_file_extension(c("Temp1.csv","Temp1.xls","Temp2.csv","Temp2.xls"),"csv")
  select_by_file_extension(c("red car","blue car","yellow duck"), "car")