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Flashcards in Getting Help Deck (12)
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1

help(topic)

documentation on topic

2

?topic

id.

3

help.search("topic")

search the help system

4

apropos("topic")

the names of all objects in the search list matching
the regular expression ”topic”

5

help.start()

start the HTML version of help

6

str(a)

display the internal *str*ucture of an R object

7

summary(a)

gives a “summary” of a, usually a statistical summary but it is
generic meaning it has different operations for different classes of a

8

ls()

show objects in the search path; specify pat="pat" to search on a
pattern

9

ls.str()

str() for each variable in the search path

10

dir()

show files in the current directory

11

methods(a)

shows S3 methods of a

12

methods(class=class(a))

ists all the methods to handle objects of
class a