R內建的資料集datasets

R內建了一些資料集（datasets），用下面指令可以看：

• data()

這個data()會輸出一個list，如下：

• d <- data()
• mode(d)
  "list"
• names(d)
  "title"   "header"  "results" "footer"
• str(d)
• r <- as.data.frame(d$results)
• write.csv(r, file="datasets.csv")

最後個指令會輸出一個datasets.csv的檔案，用excel打開，列出了104個資料集：

1. AirPassengers：Monthly Airline Passenger Numbers 1949-1960
2. BJsales：Sales Data with Leading Indicator
3. BJsales.lead (BJsales)：Sales Data with Leading Indicator
4. BOD：Biochemical Oxygen Demand
5. CO2：Carbon Dioxide Uptake in Grass Plants
6. ChickWeight：Weight versus age of chicks on different diets
7. DNase：Elisa assay of DNase
8. EuStockMarkets：Daily Closing Prices of Major European Stock Indices, 1991-1998
9. Formaldehyde：Determination of Formaldehyde
10. HairEyeColor：Hair and Eye Color of Statistics Students
11. Harman23.cor：Harman Example 2.3
12. Harman74.cor：Harman Example 7.4
13. Indometh：Pharmacokinetics of Indomethacin
14. InsectSprays：Effectiveness of Insect Sprays
15. JohnsonJohnson：Quarterly Earnings per Johnson & Johnson Share
16. LakeHuron：Level of Lake Huron 1875-1972
17. LifeCycleSavings：Intercountry Life-Cycle Savings Data
18. Loblolly：Growth of Loblolly pine trees
19. Nile：Flow of the River Nile
20. Orange：Growth of Orange Trees
21. OrchardSprays：Potency of Orchard Sprays
22. PlantGrowth：Results from an Experiment on Plant Growth
23. Puromycin：Reaction Velocity of an Enzymatic Reaction
24. Seatbelts：Road Casualties in Great Britain 1969-84
25. Theoph：Pharmacokinetics of Theophylline
26. Titanic：Survival of passengers on the Titanic
27. ToothGrowth：The Effect of Vitamin C on Tooth Growth in Guinea Pigs
28. UCBAdmissions：Student Admissions at UC Berkeley
29. UKDriverDeaths：Road Casualties in Great Britain 1969-84
30. UKgas：UK Quarterly Gas Consumption
31. USAccDeaths：Accidental Deaths in the US 1973-1978
32. USArrests：Violent Crime Rates by US State
33. USJudgeRatings：Lawyers' Ratings of State Judges in the US Superior Court
34. USPersonalExpenditure：Personal Expenditure Data
35. UScitiesD：Distances Between European Cities and Between US Cities
36. VADeaths：Death Rates in Virginia (1940)
37. WWWusage：Internet Usage per Minute
38. WorldPhones：The World's Telephones
39. ability.cov：Ability and Intelligence Tests
40. airmiles：Passenger Miles on Commercial US Airlines, 1937-1960
41. airquality：New York Air Quality Measurements
42. anscombe：Anscombe's Quartet of 'Identical' Simple Linear Regressions
43. attenu：The Joyner-Boore Attenuation Data
44. attitude：The Chatterjee-Price Attitude Data
45. austres：Quarterly Time Series of the Number of Australian Residents
46. beaver1 (beavers)：Body Temperature Series of Two Beavers
47. beaver2 (beavers)：Body Temperature Series of Two Beavers
48. cars：Speed and Stopping Distances of Cars
49. chickwts：Chicken Weights by Feed Type
50. co2：Mauna Loa Atmospheric CO2 Concentration
51. crimtab：Student's 3000 Criminals Data
52. discoveries：Yearly Numbers of Important Discoveries
53. esoph：Smoking, Alcohol and (O)esophageal Cancer
54. euro：Conversion Rates of Euro Currencies
55. euro.cross (euro)：Conversion Rates of Euro Currencies
56. eurodist：Distances Between European Cities and Between US Cities
57. faithful：Old Faithful Geyser Data
58. fdeaths (UKLungDeaths)：Monthly Deaths from Lung Diseases in the UK
59. freeny：Freeny's Revenue Data
60. freeny.x (freeny)：Freeny's Revenue Data
61. freeny.y (freeny)：Freeny's Revenue Data
62. infert：Infertility after Spontaneous and Induced Abortion
63. iris：Edgar Anderson's Iris Data
64. iris3：Edgar Anderson's Iris Data
65. islands：Areas of the World's Major Landmasses
66. ldeaths (UKLungDeaths)：Monthly Deaths from Lung Diseases in the UK
67. lh：Luteinizing Hormone in Blood Samples
68. longley：Longley's Economic Regression Data
69. lynx：Annual Canadian Lynx trappings 1821-1934
70. mdeaths (UKLungDeaths)：Monthly Deaths from Lung Diseases in the UK
71. morley：Michelson Speed of Light Data
72. mtcars：Motor Trend Car Road Tests
73. nhtemp：Average Yearly Temperatures in New Haven
74. nottem：Average Monthly Temperatures at Nottingham, 1920-1939
75. npk：Classical N, P, K Factorial Experiment
76. occupationalStatus：Occupational Status of Fathers and their Sons
77. precip：Annual Precipitation in US Cities
78. presidents：Quarterly Approval Ratings of US Presidents
79. pressure：Vapor Pressure of Mercury as a Function of Temperature
80. quakes：Locations of Earthquakes off Fiji
81. randu：Random Numbers from Congruential Generator RANDU
82. rivers：Lengths of Major North American Rivers
83. rock：Measurements on Petroleum Rock Samples
84. sleep：Student's Sleep Data
85. stack.loss (stackloss)：Brownlee's Stack Loss Plant Data
86. stack.x (stackloss)：Brownlee's Stack Loss Plant Data
87. stackloss：Brownlee's Stack Loss Plant Data
88. state.abb (state)：US State Facts and Figures
89. state.area (state)：US State Facts and Figures
90. state.center (state)：US State Facts and Figures
91. state.division (state)：US State Facts and Figures
92. state.name (state)：US State Facts and Figures
93. state.region (state)：US State Facts and Figures
94. state.x77 (state)：US State Facts and Figures
95. sunspot.month：Monthly Sunspot Data, from 1749 to "Present"
96. sunspot.year：Yearly Sunspot Data, 1700-1988
97. sunspots：Monthly Sunspot Numbers, 1749-1983
98. swiss：Swiss Fertility and Socioeconomic Indicators (1888) Data
99. treering：Yearly Treering Data, -6000-1979
100. trees：Girth, Height and Volume for Black Cherry Trees
101. uspop：Populations Recorded by the US Census
102. volcano：Topographic Information on Auckland's Maunga Whau Volcano
103. warpbreaks：The Number of Breaks in Yarn during Weaving
104. women：Average Heights and Weights for American Women

如果要看某個資料集裡面有什麼，參考《R看data frame每個欄位的資料型態》。如果要看sleep這個資料集的說明，用下面指令：

• help(sleep)

參考資料

• The R Datasets Package
• How do I get a list of built-in data sets in R?

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