R: Melihat Informasi dari data set
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Berikut adalah beberapa fungsi untuk melihat content sebuah object / dataset
# list objects in the working environment ls()
# list the variables in mydata names(mydata)
# list the structure of mydata str(mydata)
# list levels of factor v1 in mydata levels(mydata$v1)
# dimensions of an object dim(object)
# class of an object (numeric, matrix, data frame, etc) class(object)
# print mydata mydata
# print first 10 rows of mydata head(mydata, n=10)
# print last 5 rows of mydata tail(mydata, n=5)