View source for R: Read File

Sumber: http://www.sthda.com/english/wiki/reading-data-from-txt-csv-files-r-base-functions

==Fungsi Untuk Import File==


* read.csv(): for reading “comma separated value” files (“.csv”).
* read.csv2(): variant used in countries that use a comma “,” as decimal point and a semicolon “;” as field separators.
* read.delim(): for reading “tab-separated value” files (“.txt”). By default, point (“.”) is used as decimal points.
* read.delim2(): for reading “tab-separated value” files (“.txt”). By default, comma (“,”) is used as decimal points.

 # Read tabular data into R
 read.table(file, header = FALSE, sep = "", dec = ".")
 # Read "comma separated value" files (".csv")
 read.csv(file, header = TRUE, sep = ",", dec = ".", ...)
 # Or use read.csv2: variant used in countries that 
 # use a comma as decimal point and a semicolon as field separator.
 read.csv2(file, header = TRUE, sep = ";", dec = ",", ...)
 # Read TAB delimited files
 read.delim(file, header = TRUE, sep = "\t", dec = ".", ...)
 read.delim2(file, header = TRUE, sep = "\t", dec = ",", ...)

==Reading a local file==

* file: the path to the file containing the data to be imported into R.
* sep: the field separator character. “\t” is used for tab-delimited file.
* header: logical value. If TRUE, read.table() assumes that your file has a header row, so row 1 is the name of each column. If that’s not the case, you can add the argument header = FALSE.
* dec: the character used in the file for decimal points.

 # Read a txt file
 my_data <- read.delim(file.choose())
 # Read a csv file
 my_data <- read.csv(file.choose())

 my_data <- read.delim(file.choose(), 
                       stringsAsFactor = FALSE)

 my_data <- read.table(file.choose(), 
                       sep ="|", header = TRUE, dec =".")


==Reading a file from internet==

 my_data <- read.delim("http://www.sthda.com/upload/boxplot_format.txt")
 head(my_data)






==Referensi==

* http://www.sthda.com/english/wiki/reading-data-from-txt-csv-files-r-base-functions


==Pranala Menarik==

* [[R]]