strsplit r

1. Clear Screen Ctrl+L2. Exit Q ()3. Set the workspace getwd () SETWD ('D:\\Program Files\\rstudio\\workspace')4. List of files under current working directory List.files () Choose.dir () dir ("D:\\Program Files\\rstudio\\workspace", Full.names=t,

R language-string processing functions, string functionsNchar Function for retrieving the number of charactersDifferent from nchar, length is the length of the orientation. # Nchar indicates the number of characters in the string. nchar ("abcd") [1]

Several recent projects have been done using the R language. As the teacher said, learning quickly and forgetting quickly. Tidy up and put it here for easy reference later.To install the required packages:Install.packages ("xxxx")Load

Several recent projects have been done using the R language. As the teacher said, learning quickly and forgetting quickly. Tidy up and put it here for easy reference later. to install the required packages:install.packages ("xxxx")Load

One, date time, string processingDateDay: Date class, Year and dayPOSIXCT: Date time class, accurate to seconds, expressed in numbersPOSIXLT: DateTime class, accurate to seconds, expressed as a listSys.date (), date (), Difftime (), Isodate (),

 R language: Common functions (9.29 Update) First, data managementVector: vectorsNumeric: Numerical vectorLogical: Logical vectorCharacter: vector of character typeList: ListsData.frame: Data FrameC: Connect as a vector or listLength: Ask for

Data Structure I. ManagementVector: vectorsNumeric: Numerical vectorLogical: Logical vectorCharacter: vector of character typeList: ListsData.frame: Data FrameC: Connect as a vector or listLength: Ask for LengthsSubset: Seeking

DataFirst, data managementVector: vectorsNumeric: Numerical vectorLogical: Logical vectorCharacter: vector of character typeList: ListsData.frame: Data FrameC: Connect as a vector or listLength: Ask for LengthsSubset: Seeking

DataFirst, data managementVector: vectorsNumeric: Numerical vectorLogical: Logical vectorCharacter: vector of character typeList: ListsData.frame: Data FrameC: Connect as a vector or listLength: Ask for LengthsSubset: Seeking

R Language series: Generating data(2014-05-04 17:41:57)reproduced Tags: r language education Category: Biological information Generate Rule Data1, use ":", such as x=1:10, note that the method can either increment