str.replace.by.blocks: Replaces in str every occurence of pattern by replacement

In skranz/stringtools: Tools for working with strings in R

Replaces in str every occurence of pattern by replacement

Description

Replaces in str every occurence of pattern by replacement

Usage

## S3 method for class 'replace.by.blocks'
str(str, pattern, replacement, blocks = NULL,
  sub.txt = "SUB", block.start, block.end, block.ignore = NULL,
  use.levels = NULL, fixed = TRUE, only.replace.smaller.than = NULL,
  only.replace.larger.than = NULL)

Arguments

str	the string to replaced
pattern	the substring to be replaced
replacment	the new substrings
block	a block retrieved from str.block.pos alternatively, you can provide block.start and block.end
block.start	string with which the blocks start, e.g. "("
block.end	string with which the blocks end, e.g. ")"
only.replace.smaller.than	if not NULL only replaces matches whose number of characters is less or equal to only.replace.smaller.than
only.replace.larger.than	if not NULL only replaces matches whose number of characters is bigger or equal to only.replace.larger.than

Value

a string

Examples

## Not run: 
  # Replace latex fractions
  str = "5+\frac{x^2+x^2}{1+\frac{2}{x*5}}*2"
  str.replace.by.blocks(str,"\frac{_SUB_}{_SUB_}","(_SUB1_)/(_SUB2_)",
                        block.start = "{", block.end = "}")  
  str.replace.by.blocks(str,"\frac{_SUB_}{_SUB_}","(_SUB1_)/(_SUB2_)",
                        block.start = "{", block.end = "}",
                        only.replace.larger.than=20)  
  str.replace.by.blocks(str,"\frac{_SUB_}{_SUB_}","(_SUB1_)/(_SUB2_)",
                        block.start = "{", block.end = "}",
                        only.replace.smaller.than=20)  
  str ="-\frac{\sigma_{m}-\beta\sigma_{b}}{\beta-1}=\frac{\sigma_{m}-\beta\sigma_{b}}{1-\beta}"
  
  str ="\frac{1}{2}=\frac{3}{4}"
  str.replace.by.blocks(str,"\frac{_SUB_}{_SUB_}","(_SUB1_)/(_SUB2_)",
                        block.start = "{", block.end = "}")  
  

## End(Not run)

skranz/stringtools documentation built on May 11, 2022, 4:48 a.m.