Файл: R_inferno.pdf

INDEX

INDEX

private and public objects,

43

Nonstandard evaluation,

95

–

96

Object orientation,

38

–

43

Objects,

29

accessing objects,

see

Namespaces

attributes,

22

,

29

–

30

,

38

disappearing attributes,

62

growing objects,

12

–

16

performance,

see

Table

2.1

types of objects,

see

Tables

5.1

,

5.2

Operators

:

timings,

see

Table

2.1

:

,

13

–

15

,

17

,

18

,

20

–

22

,

25

–

29

,

35

,

38

,

39

,

43

,

47

,

49

–

53

,

55

,

56

,

58

,

64

–

70

,

73

–

76

,

78

formatting,

33

::

,

43

:::

,

43

< <

−

,

35

–

37

@

,

see

S4 methods

sub

slots

arithmetic

are vectorized,

18

precedence,

47

–

48

using parentheses,

48

Precedence of operators,

47

–

48

Quadratic

quadratic.formula

,

10

,

18

quadratic equation,

10

Quote/Quotes

the

quote

family of functions,

see

Table

8.2

Read data into R,

101

–

105

Rectangular format,

see

read.table

sub

Functions

Reserved words,

112

Return value of function,

28

S3 methods,

38

–

40

print,

38

–

39

white book,

38

S4 methods,

40

–

42

green book,

38

,

40

multiple dispatch,

40

slots (

@

),

41

–

42

Scoping,

78

–

80

Side effects of a function,

28

,

35

Single brackets versus double brackets,

72

Special special place,

121

Storage mode,

91

Subscripting,

12

,

20

,

21

,

55

,

56

,

67

,

68

,

71

,

72

,

96

array,

20

data frame,

20

disappearing attributes,

62

list,

20

–

21

Uwe Ligges

maxim,

20

,

24

,

52

,

62

Vanilla session

minimize packages loaded,

120

name masking,

63

Vector

three meanings,

29

Vectorization,

12

–

26

log

function,

17

outer

(with

Vectorize

),

106

prod

,

18

sum

,

17

–

18

for free,

18

over-vectorizing,

24

–

26

apply

family,

see

Table

4.1

sapply

family,

see

Table

4.1

loop-hiding,

24

performance

rbind

,

13

–

14

fragmenting memory,

13

suburbanization,

12

,

13

reasons for

clarity,

19

–

20

computational speed,

19

stable computation

taking logs, then doing sums,

18

vectorization,

17

White book,

see

S3 methods

Writing functions,

see

Functions (R + other)

125