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R commands examining data and its struct …

R commands examining data and its structures
ls() or objects() # list variables
structure()
str() # summary of data
levels()
dim() # dimension of data
class() # show the class of the variable
head() or tail() # showing parts of data

http://www.statmethods.net/input/contents.html

By microbe

Like to cook for microorganisms and human. Play football, tennis, and baseball.

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