Найденные страницы с тегом stringr всего 136

R Series: ‘stringr’ Package

We have been exploring various R packages for handling text for natural language processing. In this twenty-third article in the R, Statistics and Machine Learning series, we delve into the ‘stringr’ package, which provides a comprehensive set of functions to easily work with strings.

remove leading 0s with stringr in R

remove leading 0s with stringr in R r

stringr, str_extract: how to do positive lookbehind?

stringr, str_extract: how to do positive lookbehind? r

stringr, str_extract: how to do positive lookbehind?

stringr, str_extract: how to do positive lookbehind? r

stringr, str_extract: how to do positive lookbehind?

stringr, str_extract: how to do positive lookbehind? r

Installation of packages ‘stringr’ and ‘stringi’ had non-zero exit status

Installation of packages ‘stringr’ and ‘stringi’ had non-zero exit status r

stringr str_extract capture group capturing everything

stringr str_extract capture group capturing everything r

Split a character vector into individual characters? (opposite of paste or stringr::str_c)

Split a character vector into individual characters? (opposite of paste or stringr::str_c) r

[Solved] Find length of overlap in strings - Local Coder

do you know any ready-to-use method to obtain length and also overlap of two strings? However only with R, maybe something from stringr? I was looking here, unfortunately without s

[Solved] Create new variables based upon specific values - Local Coder

I read up on regular expressions and Hadley Wickham's stringr and dplyr packages but can't figure out how to get this to work. I have library circulation data in a data frame, wit

[Solved] Replace substring within a match with regex - Local Coder

I'm working with stringr, but the solution doesn't have to be. In the following string I want to replace all the spaces that have a letter to their left and right (i.e. first 2) w

[Solved] Find a word before one of two possible separators - Local Coder

word:12335 anotherword:2323434 totallydifferentword/455 word/32 I need to grab the character string before the : or / using only base R functions. I can do this using stringr but

[Solved] Replace part of string with mutate (in a pipe) - Local Coder

I would like to replace a part of a string (between the first 2 underscores, the first group always being 'i') like in the base R example below: library(dplyr) library(stringr) d

[Solved] Error at creating word cloud in R (Error in simple_triplet_matrix: 'i, j, v' different lengths) - Local Coder

I have the following code in R to get the recent tweets about the local mayor candidates and create a wordcloud: library(twitteR) library(ROAuth) require(RCurl) library(stringr) li

[Solved] Can't Convert Country Into Continent Through CountryCode - Local Coder

library(tidyverse) library(readr) library(countrycode) library(stringr) B07 <- read_csv('Downloads/BorderData/BorderApprehension2007.csv') B08 <- read_csv('Downloads/BorderD

[Solved] count the number of occurrences of "(" in a string - Local Coder

I am trying to get the number of open brackets in a character string in R. I am using the str_count function from the stringr package s<- '(hi),(bye),(hi)' str_count(s,'(') Er

[Solved] Meaning of regular expressions like - \\d , \\D, ^ , $ etc - Local Coder

What do these expressions mean? Where can I learn about their usage? \\d \\D \\s \\S \\w \\W \\t \\n ^ $ \ | etc.. I need to use the stringr package and i have ab

[Solved] R regex - extract words beginning with @ symbol - Local Coder

I'm trying to extract twitter handles from tweets using R's stringr package. For example, suppose I want to get all words in a vector that begin with 'A'. I can do this like so lib

[Solved] Applying a function to each row of a data.table - Local Coder

I looking for a way to efficiently apply a function to each row of data.table. Let's consider the following data table: library(data.table) library(stringr) x <- data.table(a =

[Solved] regex multiple pattern with singular replacement - Local Coder

I am trying to replace both 'st.' and 'ste.' with 'st'. Seems like the following should work but it does not: require('stringr') county <- c('st. landry', 'ste. geneveve', 'st.

[Solved] Using stringr to extract one or multiple words from text string in R - Local Coder

I have the following data frame: df <- data.frame(city=c('in London', 'in Manchester city', 'in Sao Paolo')) I am using str_extract and return the word after 'in' in a separate

[Solved] Extract words from text using dplyr and stringr - Local Coder

I'm trying to find an effective way to extract words from an text column in a dataset. The approach I'm using is library(dplyr) library(stringr) Text = c('A little bird told me ab

[Solved] Why is stringr changing encoding when manipulating strings? - Local Coder

There is this strange behavior of stringr, which is really annoying me. stringr changes without a warning the encoding of some strings that contain exotic characters, in my case ø

[Solved] Regex with non-capturing group using stringr in R - Local Coder

I am trying to use non-capturing groups with the str_extract function from the stringr package. Here is an example: library(stringr) txt <- 'foo' str_extract(txt,'(?:f)(o+)') T

[Solved] remove leading 0s with stringr in R - Local Coder

I have the following data id 00001 00010 00022 07432 I would like to remove the leading 0s so the data would like like the following id 1 10 22 7432