install.packages("stringr")# Install stringr packagelibrary("stringr")# Load stringr Now we cansubset our datawith thestr_detect functionas shown below: data1<-iris[str_detect(iris$Species,"virg"),]# Extract matching rows with str_detecthead(data1)# Sepal.Length Sepal.Width Petal.Length...
11． Strings with stringr Introduction String Basics Matching Patterns with Regular Expressions Tools Other Types of Pattern Other Uses of Regular Expressions stringi 12． Factors with forcats Introduction Creating Factors General Social Survey Modifying Factor Order Modifying Factor Levels 13． Dates and ...
RangeError(message:String)— 构造函数, 类 RangeError 创建一个新的 RangeError 对象。 RAREST_FIRST— 常量静态属性, 类 flash.net.NetGroupReplicationStrategy 指定当从邻居获取对象以满足需求时,首先请求所有邻居中具有最少副本的对象。 rate— 属性, 类 flash.media.Microphone 麦克风捕获声音时使用的速率,单位是...
We can view the output tibble/dataframe,works_from_dois, interactively in RStudio or inspect it with base functions likestrorhead. We also provide the experimentalshow_worksfunction to simplify the result (e.g., remove some columns, keep first/last author) for easy viewing. Note: the followi...
(default: celladmin) abbreviate non-error output abbreviate output lines matching a regular expression string of options passed through to ssh string of options passed through to scp if different from sshoptions serialize execution over the cells list target cells drop keys from target cells' ...
new order new_order <- c() # Loop over prefixes for (prefix in prefixes) { # Find column names matching the current prefix matching_columns <- grep(paste0("^", prefix), original_column_names, value = TRUE) # Append to the new order new_order <- c(new_order, matching_columns) }...
In this short passage, we will demonstrate how to use thesubset()function to select rows that meet a certain condition, and then remove them from the dataset using the-operator. The condition can be any number of things – a numerical comparison, a logical test, matching a specific string...
Small, fast, dependency free interpreted string literals. 471 63 11 8 months ago multidplyr/128 A dplyr backend that partitions a data frame over multiple processes 468 108 3 a month ago awesome-rshiny/129 An awesome R-shiny list! 467 28 5 3 months ago paletteer/130 🎨🎨🎨 ...
1. By using theselect()function of thedplyrpackage of the tidyverse collection. The name of each column to delete is passed in with a minus sign before it: df<-select(df,-col_1,-col_3) Powered By If, instead, we have too many columns to delete, it makes more sense to keep the ...
str_dup [stringr] – Duplicate and concatenate strings within a character vector. str_ends [stringr] – Detect the presence or absence of a pattern at the end of a character string. str_extract [stringr] – Extract matching patterns from character string . ...