qdap (version 0.2.5)

beg2char: Grab Begin/End of Sting to Character

Description

beg2char - Grab from beginning of string to a character(s). char2end - Grab from character(s) to end of string.

Usage

beg2char(text.var, char = " ", noc = 1, include = FALSE)

  char2end(text.var, char = " ", noc = 1, include = FALSE)

Arguments

text.var,

A character string

char

The character from which to grab until/from.

noc

Number of times the character appears before the grab.

include

logical. If TRUE includes the character in the grab.

Value

• returns a vector of text with char on/forward removed.

References

http://stackoverflow.com/q/15909626/1000343

Examples

x <- c("a_b_c_d", "1_2_3_4", "<_?_._:")
beg2char(x, "_")
beg2char(x, "_", 2)
beg2char(x, "_", 3)
beg2char(x, "_", 4)
beg2char(x, "_", 3, include=TRUE)

char2end(x, "_")
char2end(x, "_", 2)
char2end(x, "_", 3)
char2end(x, "_", 4)
char2end(x, "_", 3, include=TRUE)

x2 <- gsub("_", " ", x)
char2end(x2, " ", 2)
beg2char(x2, " ", 2)

x3 <- gsub("_", "\\^", x)
char2end(x3, "^", 2)
beg2char(x3, "^", 2)