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- https://www.rdocumentation.org/packages/base/versions/3.5.1/topics/nrow
- https://stackoverflow.com/questions/38976217/what-is-the-meaning-of-include-lowest-in-reclassify-raster-package-r
- https://stat.ethz.ch/R-manual/R-devel/library/base/html/table.html
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Project Classification Classification party 패키지 설치 및 로딩, 패키지 내 데이터 목록조회 if(!require(party)){ install.packages("party") library(party) }else{ library(party) } ## Loading required package: party ## Loading required package: grid ## Loading required package: mvtnorm ## Loading required package: modeltools ## Loading required package: stats4 ## Loading required package: strucchange ## Loading requir..
Project Regression Regression analysis carData 패키지를 설치 및 로딩하고, 패키지네 들어 있는 데이터목록을 조회하시오. if(!require(carData)){ install.packages("carData") library(carData) }else{ library(carData) } ## Loading required package: carData if(!require(car)){ install.packages("car") library(car) }else{ library(car) } ## Loading required package: car data(package="carData") carData 패키지 내 데이터셋 목록 중 에 Prestige 데이터셋을 로딩하..
Project GNT GNT arules 패키지를 인스톨 및 로딩을 하고, 패키지 내 데이터목록을 조회하시오. install.packages("arules",repos="https://cran.rstudio.com/bin/windows/contrib/3.5/arules_1.6-1.zip") ## Warning: unable to access index for repository https://cran.rstudio.com/bin/windows/contrib/3.5/arules_1.6-1.zip/src/contrib: ## URL 'https://cran.rstudio.com/bin/windows/contrib/3.5/arules_1.6-1.zip/src/contrib/PACKAGES'를 열 수 없습니다 ..
Project ABTest ABTest • ABTest 실습문제 • datasets 패키지에 있는 mtcars라는 데이터셋을 메모리로 로딩하시오. data("mtcars") library(dplyr) ## ## Attaching package: 'dplyr' ## The following objects are masked from 'package:stats': ## ## filter, lag ## The following objects are masked from 'package:base': ## ## intersect, setdiff, setequal, union library(psych) headTail(mtcars)#내용조회 ## mpg cyl disp hp drat wt qsec vs am gea..
Interval handle of Cut fucntionIf 'right' parameter is true, the cut interval is left open and right closed. However, if 'include.lowest' parameter is also true, the cut interval of lowest value will be closed. If 'right' parameter is false, the cut interval is left closed and right open. However, if 'include.lowest' parameter is also true, the cut interval of highest value will be closed.
Matrix Transpose Use : t(x) Given a matrix or data.frame x, t function returns the transpose of x. Comment : It is useful when plot a table(Changing x axis and y axis).
useNA controls if the table includes counts of NA values: the allowed values correspond to never ("no"),the count is positive ("ifany") andeven for zero counts ("always")
nrow() vs NROW()
For objects without a dim attribute, like vectors, nrow() and ncol() are NULL, but NROW() and NCOL() treat the input like a column vector.
nextLine() 메서드를 nextInt()나 다른 메서드 사용후에 사용할경우 문자열이 아닌 개행 값을 읽어들이는 경우가 발생하여 고생했다. 해결책으로는 여러가지 있지만 지금으로서는 문자열 입력 받기전에 nextLine()메서드를 먼저 한번 시행 시켜서 개행문자를 읽어버리는 것이 편한것 같다.