
R version 3.6.2 Patched (2020-02-12 r77795) -- "Dark and Stormy Night"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> #### Simple integrity tests of the system datasets
> 
> options(useFancyQuotes=FALSE)
> env <- as.environment("package:datasets")
> d <- ls(env) # don't want .names
> for(f in d) {
+     cat("\n** structure of dataset ", f, "\n", sep="")
+     str(get(f, envir=env, inherits=FALSE))
+ }

** structure of dataset AirPassengers
 Time-Series [1:144] from 1949 to 1961: 112 118 132 129 121 135 148 148 136 119 ...

** structure of dataset BJsales
 Time-Series [1:150] from 1 to 150: 200 200 199 199 199 ...

** structure of dataset BJsales.lead
 Time-Series [1:150] from 1 to 150: 10.01 10.07 10.32 9.75 10.33 ...

** structure of dataset BOD
'data.frame':	6 obs. of  2 variables:
 $ Time  : num  1 2 3 4 5 7
 $ demand: num  8.3 10.3 19 16 15.6 19.8
 - attr(*, "reference")= chr "A1.4, p. 270"

** structure of dataset CO2
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	84 obs. of  5 variables:
 $ Plant    : Ord.factor w/ 12 levels "Qn1"<"Qn2"<"Qn3"<..: 1 1 1 1 1 1 1 2 2 2 ...
 $ Type     : Factor w/ 2 levels "Quebec","Mississippi": 1 1 1 1 1 1 1 1 1 1 ...
 $ Treatment: Factor w/ 2 levels "nonchilled","chilled": 1 1 1 1 1 1 1 1 1 1 ...
 $ conc     : num  95 175 250 350 500 675 1000 95 175 250 ...
 $ uptake   : num  16 30.4 34.8 37.2 35.3 39.2 39.7 13.6 27.3 37.1 ...
 - attr(*, "formula")=Class 'formula'  language uptake ~ conc | Plant
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "outer")=Class 'formula'  language ~Treatment * Type
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "Ambient carbon dioxide concentration"
  ..$ y: chr "CO2 uptake rate"
 - attr(*, "units")=List of 2
  ..$ x: chr "(uL/L)"
  ..$ y: chr "(umol/m^2 s)"

** structure of dataset ChickWeight
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	578 obs. of  4 variables:
 $ weight: num  42 51 59 64 76 93 106 125 149 171 ...
 $ Time  : num  0 2 4 6 8 10 12 14 16 18 ...
 $ Chick : Ord.factor w/ 50 levels "18"<"16"<"15"<..: 15 15 15 15 15 15 15 15 15 15 ...
 $ Diet  : Factor w/ 4 levels "1","2","3","4": 1 1 1 1 1 1 1 1 1 1 ...
 - attr(*, "formula")=Class 'formula'  language weight ~ Time | Chick
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "outer")=Class 'formula'  language ~Diet
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "Time"
  ..$ y: chr "Body weight"
 - attr(*, "units")=List of 2
  ..$ x: chr "(days)"
  ..$ y: chr "(gm)"

** structure of dataset DNase
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	176 obs. of  3 variables:
 $ Run    : Ord.factor w/ 11 levels "10"<"11"<"9"<..: 4 4 4 4 4 4 4 4 4 4 ...
 $ conc   : num  0.0488 0.0488 0.1953 0.1953 0.3906 ...
 $ density: num  0.017 0.018 0.121 0.124 0.206 0.215 0.377 0.374 0.614 0.609 ...
 - attr(*, "formula")=Class 'formula'  language density ~ conc | Run
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "DNase concentration"
  ..$ y: chr "Optical density"
 - attr(*, "units")=List of 1
  ..$ x: chr "(ng/ml)"

** structure of dataset EuStockMarkets
 Time-Series [1:1860, 1:4] from 1991 to 1999: 1629 1614 1607 1621 1618 ...
 - attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:4] "DAX" "SMI" "CAC" "FTSE"

** structure of dataset Formaldehyde
'data.frame':	6 obs. of  2 variables:
 $ carb  : num  0.1 0.3 0.5 0.6 0.7 0.9
 $ optden: num  0.086 0.269 0.446 0.538 0.626 0.782

** structure of dataset HairEyeColor
 'table' num [1:4, 1:4, 1:2] 32 53 10 3 11 50 10 30 10 25 ...
 - attr(*, "dimnames")=List of 3
  ..$ Hair: chr [1:4] "Black" "Brown" "Red" "Blond"
  ..$ Eye : chr [1:4] "Brown" "Blue" "Hazel" "Green"
  ..$ Sex : chr [1:2] "Male" "Female"

** structure of dataset Harman23.cor
List of 3
 $ cov   : num [1:8, 1:8] 1 0.846 0.805 0.859 0.473 0.398 0.301 0.382 0.846 1 ...
  ..- attr(*, "dimnames")=List of 2
  .. ..$ : chr [1:8] "height" "arm.span" "forearm" "lower.leg" ...
  .. ..$ : chr [1:8] "height" "arm.span" "forearm" "lower.leg" ...
 $ center: num [1:8] 0 0 0 0 0 0 0 0
 $ n.obs : num 305

** structure of dataset Harman74.cor
List of 3
 $ cov   : num [1:24, 1:24] 1 0.318 0.403 0.468 0.321 0.335 0.304 0.332 0.326 0.116 ...
  ..- attr(*, "dimnames")=List of 2
  .. ..$ : chr [1:24] "VisualPerception" "Cubes" "PaperFormBoard" "Flags" ...
  .. ..$ : chr [1:24] "VisualPerception" "Cubes" "PaperFormBoard" "Flags" ...
 $ center: num [1:24] 0 0 0 0 0 0 0 0 0 0 ...
 $ n.obs : num 145

** structure of dataset Indometh
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	66 obs. of  3 variables:
 $ Subject: Ord.factor w/ 6 levels "1"<"4"<"2"<"5"<..: 1 1 1 1 1 1 1 1 1 1 ...
 $ time   : num  0.25 0.5 0.75 1 1.25 2 3 4 5 6 ...
 $ conc   : num  1.5 0.94 0.78 0.48 0.37 0.19 0.12 0.11 0.08 0.07 ...
 - attr(*, "formula")=Class 'formula'  language conc ~ time | Subject
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "Time since drug administration"
  ..$ y: chr "Indomethacin concentration"
 - attr(*, "units")=List of 2
  ..$ x: chr "(hr)"
  ..$ y: chr "(mcg/ml)"

** structure of dataset InsectSprays
'data.frame':	72 obs. of  2 variables:
 $ count: num  10 7 20 14 14 12 10 23 17 20 ...
 $ spray: Factor w/ 6 levels "A","B","C","D",..: 1 1 1 1 1 1 1 1 1 1 ...

** structure of dataset JohnsonJohnson
 Time-Series [1:84] from 1960 to 1981: 0.71 0.63 0.85 0.44 0.61 0.69 0.92 0.55 0.72 0.77 ...

** structure of dataset LakeHuron
 Time-Series [1:98] from 1875 to 1972: 580 582 581 581 580 ...

** structure of dataset LifeCycleSavings
'data.frame':	50 obs. of  5 variables:
 $ sr   : num  11.43 12.07 13.17 5.75 12.88 ...
 $ pop15: num  29.4 23.3 23.8 41.9 42.2 ...
 $ pop75: num  2.87 4.41 4.43 1.67 0.83 2.85 1.34 0.67 1.06 1.14 ...
 $ dpi  : num  2330 1508 2108 189 728 ...
 $ ddpi : num  2.87 3.93 3.82 0.22 4.56 2.43 2.67 6.51 3.08 2.8 ...

** structure of dataset Loblolly
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	84 obs. of  3 variables:
 $ height: num  4.51 10.89 28.72 41.74 52.7 ...
 $ age   : num  3 5 10 15 20 25 3 5 10 15 ...
 $ Seed  : Ord.factor w/ 14 levels "329"<"327"<"325"<..: 10 10 10 10 10 10 13 13 13 13 ...
 - attr(*, "formula")=Class 'formula'  language height ~ age | Seed
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "Age of tree"
  ..$ y: chr "Height of tree"
 - attr(*, "units")=List of 2
  ..$ x: chr "(yr)"
  ..$ y: chr "(ft)"

** structure of dataset Nile
 Time-Series [1:100] from 1871 to 1970: 1120 1160 963 1210 1160 1160 813 1230 1370 1140 ...

** structure of dataset Orange
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	35 obs. of  3 variables:
 $ Tree         : Ord.factor w/ 5 levels "3"<"1"<"5"<"2"<..: 2 2 2 2 2 2 2 4 4 4 ...
 $ age          : num  118 484 664 1004 1231 ...
 $ circumference: num  30 58 87 115 120 142 145 33 69 111 ...
 - attr(*, "formula")=Class 'formula'  language circumference ~ age | Tree
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "Time since December 31, 1968"
  ..$ y: chr "Trunk circumference"
 - attr(*, "units")=List of 2
  ..$ x: chr "(days)"
  ..$ y: chr "(mm)"

** structure of dataset OrchardSprays
'data.frame':	64 obs. of  4 variables:
 $ decrease : num  57 95 8 69 92 90 15 2 84 6 ...
 $ rowpos   : num  1 2 3 4 5 6 7 8 1 2 ...
 $ colpos   : num  1 1 1 1 1 1 1 1 2 2 ...
 $ treatment: Factor w/ 8 levels "A","B","C","D",..: 4 5 2 8 7 6 3 1 3 2 ...

** structure of dataset PlantGrowth
'data.frame':	30 obs. of  2 variables:
 $ weight: num  4.17 5.58 5.18 6.11 4.5 4.61 5.17 4.53 5.33 5.14 ...
 $ group : Factor w/ 3 levels "ctrl","trt1",..: 1 1 1 1 1 1 1 1 1 1 ...

** structure of dataset Puromycin
'data.frame':	23 obs. of  3 variables:
 $ conc : num  0.02 0.02 0.06 0.06 0.11 0.11 0.22 0.22 0.56 0.56 ...
 $ rate : num  76 47 97 107 123 139 159 152 191 201 ...
 $ state: Factor w/ 2 levels "treated","untreated": 1 1 1 1 1 1 1 1 1 1 ...
 - attr(*, "reference")= chr "A1.3, p. 269"

** structure of dataset Seatbelts
 Time-Series [1:192, 1:8] from 1969 to 1985: 107 97 102 87 119 106 110 106 107 134 ...
 - attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:8] "DriversKilled" "drivers" "front" "rear" ...

** structure of dataset Theoph
Classes 'nfnGroupedData', 'nfGroupedData', 'groupedData' and 'data.frame':	132 obs. of  5 variables:
 $ Subject: Ord.factor w/ 12 levels "6"<"7"<"8"<"11"<..: 11 11 11 11 11 11 11 11 11 11 ...
 $ Wt     : num  79.6 79.6 79.6 79.6 79.6 79.6 79.6 79.6 79.6 79.6 ...
 $ Dose   : num  4.02 4.02 4.02 4.02 4.02 4.02 4.02 4.02 4.02 4.02 ...
 $ Time   : num  0 0.25 0.57 1.12 2.02 ...
 $ conc   : num  0.74 2.84 6.57 10.5 9.66 8.58 8.36 7.47 6.89 5.94 ...
 - attr(*, "formula")=Class 'formula'  language conc ~ Time | Subject
  .. ..- attr(*, ".Environment")=<environment: R_EmptyEnv> 
 - attr(*, "labels")=List of 2
  ..$ x: chr "Time since drug administration"
  ..$ y: chr "Theophylline concentration in serum"
 - attr(*, "units")=List of 2
  ..$ x: chr "(hr)"
  ..$ y: chr "(mg/l)"

** structure of dataset Titanic
 'table' num [1:4, 1:2, 1:2, 1:2] 0 0 35 0 0 0 17 0 118 154 ...
 - attr(*, "dimnames")=List of 4
  ..$ Class   : chr [1:4] "1st" "2nd" "3rd" "Crew"
  ..$ Sex     : chr [1:2] "Male" "Female"
  ..$ Age     : chr [1:2] "Child" "Adult"
  ..$ Survived: chr [1:2] "No" "Yes"

** structure of dataset ToothGrowth
'data.frame':	60 obs. of  3 variables:
 $ len : num  4.2 11.5 7.3 5.8 6.4 10 11.2 11.2 5.2 7 ...
 $ supp: Factor w/ 2 levels "OJ","VC": 2 2 2 2 2 2 2 2 2 2 ...
 $ dose: num  0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 ...

** structure of dataset UCBAdmissions
 'table' num [1:2, 1:2, 1:6] 512 313 89 19 353 207 17 8 120 205 ...
 - attr(*, "dimnames")=List of 3
  ..$ Admit : chr [1:2] "Admitted" "Rejected"
  ..$ Gender: chr [1:2] "Male" "Female"
  ..$ Dept  : chr [1:6] "A" "B" "C" "D" ...

** structure of dataset UKDriverDeaths
 Time-Series [1:192] from 1969 to 1985: 1687 1508 1507 1385 1632 ...

** structure of dataset UKgas
 Time-Series [1:108] from 1960 to 1987: 160.1 129.7 84.8 120.1 160.1 ...

** structure of dataset USAccDeaths
 Time-Series [1:72] from 1973 to 1979: 9007 8106 8928 9137 10017 ...

** structure of dataset USArrests
'data.frame':	50 obs. of  4 variables:
 $ Murder  : num  13.2 10 8.1 8.8 9 7.9 3.3 5.9 15.4 17.4 ...
 $ Assault : int  236 263 294 190 276 204 110 238 335 211 ...
 $ UrbanPop: int  58 48 80 50 91 78 77 72 80 60 ...
 $ Rape    : num  21.2 44.5 31 19.5 40.6 38.7 11.1 15.8 31.9 25.8 ...

** structure of dataset USJudgeRatings
'data.frame':	43 obs. of  12 variables:
 $ CONT: num  5.7 6.8 7.2 6.8 7.3 6.2 10.6 7 7.3 8.2 ...
 $ INTG: num  7.9 8.9 8.1 8.8 6.4 8.8 9 5.9 8.9 7.9 ...
 $ DMNR: num  7.7 8.8 7.8 8.5 4.3 8.7 8.9 4.9 8.9 6.7 ...
 $ DILG: num  7.3 8.5 7.8 8.8 6.5 8.5 8.7 5.1 8.7 8.1 ...
 $ CFMG: num  7.1 7.8 7.5 8.3 6 7.9 8.5 5.4 8.6 7.9 ...
 $ DECI: num  7.4 8.1 7.6 8.5 6.2 8 8.5 5.9 8.5 8 ...
 $ PREP: num  7.1 8 7.5 8.7 5.7 8.1 8.5 4.8 8.4 7.9 ...
 $ FAMI: num  7.1 8 7.5 8.7 5.7 8 8.5 5.1 8.4 8.1 ...
 $ ORAL: num  7.1 7.8 7.3 8.4 5.1 8 8.6 4.7 8.4 7.7 ...
 $ WRIT: num  7 7.9 7.4 8.5 5.3 8 8.4 4.9 8.5 7.8 ...
 $ PHYS: num  8.3 8.5 7.9 8.8 5.5 8.6 9.1 6.8 8.8 8.5 ...
 $ RTEN: num  7.8 8.7 7.8 8.7 4.8 8.6 9 5 8.8 7.9 ...

** structure of dataset USPersonalExpenditure
 num [1:5, 1:5] 22.2 10.5 3.53 1.04 0.341 44.5 15.5 5.76 1.98 0.974 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:5] "Food and Tobacco" "Household Operation" "Medical and Health" "Personal Care" ...
  ..$ : chr [1:5] "1940" "1945" "1950" "1955" ...

** structure of dataset UScitiesD
 'dist' int [1:45] 587 1212 701 1936 604 748 2139 2182 543 920 ...
 - attr(*, "Labels")= chr [1:10] "Atlanta" "Chicago" "Denver" "Houston" ...
 - attr(*, "Size")= int 10
 - attr(*, "call")= language as.dist.default(m = t(cities.mat))
 - attr(*, "Diag")= logi FALSE
 - attr(*, "Upper")= logi FALSE

** structure of dataset VADeaths
 num [1:5, 1:4] 11.7 18.1 26.9 41 66 8.7 11.7 20.3 30.9 54.3 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:5] "50-54" "55-59" "60-64" "65-69" ...
  ..$ : chr [1:4] "Rural Male" "Rural Female" "Urban Male" "Urban Female"

** structure of dataset WWWusage
 Time-Series [1:100] from 1 to 100: 88 84 85 85 84 85 83 85 88 89 ...

** structure of dataset WorldPhones
 num [1:7, 1:7] 45939 60423 64721 68484 71799 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:7] "1951" "1956" "1957" "1958" ...
  ..$ : chr [1:7] "N.Amer" "Europe" "Asia" "S.Amer" ...

** structure of dataset ability.cov
List of 3
 $ cov   : num [1:6, 1:6] 24.64 5.99 33.52 6.02 20.75 ...
  ..- attr(*, "dimnames")=List of 2
  .. ..$ : chr [1:6] "general" "picture" "blocks" "maze" ...
  .. ..$ : chr [1:6] "general" "picture" "blocks" "maze" ...
 $ center: num [1:6] 0 0 0 0 0 0
 $ n.obs : num 112

** structure of dataset airmiles
 Time-Series [1:24] from 1937 to 1960: 412 480 683 1052 1385 ...

** structure of dataset airquality
'data.frame':	153 obs. of  6 variables:
 $ Ozone  : int  41 36 12 18 NA 28 23 19 8 NA ...
 $ Solar.R: int  190 118 149 313 NA NA 299 99 19 194 ...
 $ Wind   : num  7.4 8 12.6 11.5 14.3 14.9 8.6 13.8 20.1 8.6 ...
 $ Temp   : int  67 72 74 62 56 66 65 59 61 69 ...
 $ Month  : int  5 5 5 5 5 5 5 5 5 5 ...
 $ Day    : int  1 2 3 4 5 6 7 8 9 10 ...

** structure of dataset anscombe
'data.frame':	11 obs. of  8 variables:
 $ x1: num  10 8 13 9 11 14 6 4 12 7 ...
 $ x2: num  10 8 13 9 11 14 6 4 12 7 ...
 $ x3: num  10 8 13 9 11 14 6 4 12 7 ...
 $ x4: num  8 8 8 8 8 8 8 19 8 8 ...
 $ y1: num  8.04 6.95 7.58 8.81 8.33 ...
 $ y2: num  9.14 8.14 8.74 8.77 9.26 8.1 6.13 3.1 9.13 7.26 ...
 $ y3: num  7.46 6.77 12.74 7.11 7.81 ...
 $ y4: num  6.58 5.76 7.71 8.84 8.47 7.04 5.25 12.5 5.56 7.91 ...

** structure of dataset attenu
'data.frame':	182 obs. of  5 variables:
 $ event  : num  1 2 2 2 2 2 2 2 2 2 ...
 $ mag    : num  7 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 ...
 $ station: Factor w/ 117 levels "1008","1011",..: 24 13 15 68 39 74 22 1 8 55 ...
 $ dist   : num  12 148 42 85 107 109 156 224 293 359 ...
 $ accel  : num  0.359 0.014 0.196 0.135 0.062 0.054 0.014 0.018 0.01 0.004 ...

** structure of dataset attitude
'data.frame':	30 obs. of  7 variables:
 $ rating    : num  43 63 71 61 81 43 58 71 72 67 ...
 $ complaints: num  51 64 70 63 78 55 67 75 82 61 ...
 $ privileges: num  30 51 68 45 56 49 42 50 72 45 ...
 $ learning  : num  39 54 69 47 66 44 56 55 67 47 ...
 $ raises    : num  61 63 76 54 71 54 66 70 71 62 ...
 $ critical  : num  92 73 86 84 83 49 68 66 83 80 ...
 $ advance   : num  45 47 48 35 47 34 35 41 31 41 ...

** structure of dataset austres
 Time-Series [1:89] from 1971 to 1993: 13067 13130 13198 13254 13304 ...

** structure of dataset beaver1
'data.frame':	114 obs. of  4 variables:
 $ day  : num  346 346 346 346 346 346 346 346 346 346 ...
 $ time : num  840 850 900 910 920 930 940 950 1000 1010 ...
 $ temp : num  36.3 36.3 36.4 36.4 36.5 ...
 $ activ: num  0 0 0 0 0 0 0 0 0 0 ...

** structure of dataset beaver2
'data.frame':	100 obs. of  4 variables:
 $ day  : num  307 307 307 307 307 307 307 307 307 307 ...
 $ time : num  930 940 950 1000 1010 1020 1030 1040 1050 1100 ...
 $ temp : num  36.6 36.7 36.9 37.1 37.2 ...
 $ activ: num  0 0 0 0 0 0 0 0 0 0 ...

** structure of dataset cars
'data.frame':	50 obs. of  2 variables:
 $ speed: num  4 4 7 7 8 9 10 10 10 11 ...
 $ dist : num  2 10 4 22 16 10 18 26 34 17 ...

** structure of dataset chickwts
'data.frame':	71 obs. of  2 variables:
 $ weight: num  179 160 136 227 217 168 108 124 143 140 ...
 $ feed  : Factor w/ 6 levels "casein","horsebean",..: 2 2 2 2 2 2 2 2 2 2 ...

** structure of dataset co2
 Time-Series [1:468] from 1959 to 1998: 315 316 316 318 318 ...

** structure of dataset crimtab
 'table' int [1:42, 1:22] 0 0 0 0 0 0 1 0 0 0 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:42] "9.4" "9.5" "9.6" "9.7" ...
  ..$ : chr [1:22] "142.24" "144.78" "147.32" "149.86" ...

** structure of dataset discoveries
 Time-Series [1:100] from 1860 to 1959: 5 3 0 2 0 3 2 3 6 1 ...

** structure of dataset esoph
'data.frame':	88 obs. of  5 variables:
 $ agegp    : Ord.factor w/ 6 levels "25-34"<"35-44"<..: 1 1 1 1 1 1 1 1 1 1 ...
 $ alcgp    : Ord.factor w/ 4 levels "0-39g/day"<"40-79"<..: 1 1 1 1 2 2 2 2 3 3 ...
 $ tobgp    : Ord.factor w/ 4 levels "0-9g/day"<"10-19"<..: 1 2 3 4 1 2 3 4 1 2 ...
 $ ncases   : num  0 0 0 0 0 0 0 0 0 0 ...
 $ ncontrols: num  40 10 6 5 27 7 4 7 2 1 ...

** structure of dataset euro
 Named num [1:11] 13.76 40.34 1.96 166.39 5.95 ...
 - attr(*, "names")= chr [1:11] "ATS" "BEF" "DEM" "ESP" ...

** structure of dataset euro.cross
 num [1:11, 1:11] 1 0.3411 7.0355 0.0827 2.3143 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:11] "ATS" "BEF" "DEM" "ESP" ...
  ..$ : chr [1:11] "ATS" "BEF" "DEM" "ESP" ...

** structure of dataset eurodist
 'dist' num [1:210] 3313 2963 3175 3339 2762 ...
 - attr(*, "Size")= num 21
 - attr(*, "Labels")= chr [1:21] "Athens" "Barcelona" "Brussels" "Calais" ...

** structure of dataset faithful
'data.frame':	272 obs. of  2 variables:
 $ eruptions: num  3.6 1.8 3.33 2.28 4.53 ...
 $ waiting  : num  79 54 74 62 85 55 88 85 51 85 ...

** structure of dataset fdeaths
 Time-Series [1:72] from 1974 to 1980: 901 689 827 677 522 406 441 393 387 582 ...

** structure of dataset freeny
'data.frame':	39 obs. of  5 variables:
 $ y                    : Time-Series  from 1962 to 1972: 8.79 8.79 8.81 8.81 8.91 ...
 $ lag.quarterly.revenue: num  8.8 8.79 8.79 8.81 8.81 ...
 $ price.index          : num  4.71 4.7 4.69 4.69 4.64 ...
 $ income.level         : num  5.82 5.83 5.83 5.84 5.85 ...
 $ market.potential     : num  13 13 13 13 13 ...

** structure of dataset freeny.x
 num [1:39, 1:4] 8.8 8.79 8.79 8.81 8.81 ...
 - attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:4] "lag quarterly revenue" "price index" "income level" "market potential"

** structure of dataset freeny.y
 Time-Series [1:39] from 1962 to 1972: 8.79 8.79 8.81 8.81 8.91 ...

** structure of dataset infert
'data.frame':	248 obs. of  8 variables:
 $ education     : Factor w/ 3 levels "0-5yrs","6-11yrs",..: 1 1 1 1 2 2 2 2 2 2 ...
 $ age           : num  26 42 39 34 35 36 23 32 21 28 ...
 $ parity        : num  6 1 6 4 3 4 1 2 1 2 ...
 $ induced       : num  1 1 2 2 1 2 0 0 0 0 ...
 $ case          : num  1 1 1 1 1 1 1 1 1 1 ...
 $ spontaneous   : num  2 0 0 0 1 1 0 0 1 0 ...
 $ stratum       : int  1 2 3 4 5 6 7 8 9 10 ...
 $ pooled.stratum: num  3 1 4 2 32 36 6 22 5 19 ...

** structure of dataset iris
'data.frame':	150 obs. of  5 variables:
 $ Sepal.Length: num  5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ...
 $ Sepal.Width : num  3.5 3 3.2 3.1 3.6 3.9 3.4 3.4 2.9 3.1 ...
 $ Petal.Length: num  1.4 1.4 1.3 1.5 1.4 1.7 1.4 1.5 1.4 1.5 ...
 $ Petal.Width : num  0.2 0.2 0.2 0.2 0.2 0.4 0.3 0.2 0.2 0.1 ...
 $ Species     : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 ...

** structure of dataset iris3
 num [1:50, 1:4, 1:3] 5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ...
 - attr(*, "dimnames")=List of 3
  ..$ : NULL
  ..$ : chr [1:4] "Sepal L." "Sepal W." "Petal L." "Petal W."
  ..$ : chr [1:3] "Setosa" "Versicolor" "Virginica"

** structure of dataset islands
 Named num [1:48] 11506 5500 16988 2968 16 ...
 - attr(*, "names")= chr [1:48] "Africa" "Antarctica" "Asia" "Australia" ...

** structure of dataset ldeaths
 Time-Series [1:72] from 1974 to 1980: 3035 2552 2704 2554 2014 ...

** structure of dataset lh
 Time-Series [1:48] from 1 to 48: 2.4 2.4 2.4 2.2 2.1 1.5 2.3 2.3 2.5 2 ...

** structure of dataset longley
'data.frame':	16 obs. of  7 variables:
 $ GNP.deflator: num  83 88.5 88.2 89.5 96.2 ...
 $ GNP         : num  234 259 258 285 329 ...
 $ Unemployed  : num  236 232 368 335 210 ...
 $ Armed.Forces: num  159 146 162 165 310 ...
 $ Population  : num  108 109 110 111 112 ...
 $ Year        : int  1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 ...
 $ Employed    : num  60.3 61.1 60.2 61.2 63.2 ...

** structure of dataset lynx
 Time-Series [1:114] from 1821 to 1934: 269 321 585 871 1475 ...

** structure of dataset mdeaths
 Time-Series [1:72] from 1974 to 1980: 2134 1863 1877 1877 1492 ...

** structure of dataset morley
'data.frame':	100 obs. of  3 variables:
 $ Expt : int  1 1 1 1 1 1 1 1 1 1 ...
 $ Run  : int  1 2 3 4 5 6 7 8 9 10 ...
 $ Speed: int  850 740 900 1070 930 850 950 980 980 880 ...

** structure of dataset mtcars
'data.frame':	32 obs. of  11 variables:
 $ mpg : num  21 21 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 ...
 $ cyl : num  6 6 4 6 8 6 8 4 4 6 ...
 $ disp: num  160 160 108 258 360 ...
 $ hp  : num  110 110 93 110 175 105 245 62 95 123 ...
 $ drat: num  3.9 3.9 3.85 3.08 3.15 2.76 3.21 3.69 3.92 3.92 ...
 $ wt  : num  2.62 2.88 2.32 3.21 3.44 ...
 $ qsec: num  16.5 17 18.6 19.4 17 ...
 $ vs  : num  0 0 1 1 0 1 0 1 1 1 ...
 $ am  : num  1 1 1 0 0 0 0 0 0 0 ...
 $ gear: num  4 4 4 3 3 3 3 4 4 4 ...
 $ carb: num  4 4 1 1 2 1 4 2 2 4 ...

** structure of dataset nhtemp
 Time-Series [1:60] from 1912 to 1971: 49.9 52.3 49.4 51.1 49.4 47.9 49.8 50.9 49.3 51.9 ...

** structure of dataset nottem
 Time-Series [1:240] from 1920 to 1940: 40.6 40.8 44.4 46.7 54.1 58.5 57.7 56.4 54.3 50.5 ...

** structure of dataset npk
'data.frame':	24 obs. of  5 variables:
 $ block: Factor w/ 6 levels "1","2","3","4",..: 1 1 1 1 2 2 2 2 3 3 ...
 $ N    : Factor w/ 2 levels "0","1": 1 2 1 2 2 2 1 1 1 2 ...
 $ P    : Factor w/ 2 levels "0","1": 2 2 1 1 1 2 1 2 2 2 ...
 $ K    : Factor w/ 2 levels "0","1": 2 1 1 2 1 2 2 1 1 2 ...
 $ yield: num  49.5 62.8 46.8 57 59.8 58.5 55.5 56 62.8 55.8 ...

** structure of dataset occupationalStatus
 'table' int [1:8, 1:8] 50 16 12 11 2 12 0 0 19 40 ...
 - attr(*, "dimnames")=List of 2
  ..$ origin     : chr [1:8] "1" "2" "3" "4" ...
  ..$ destination: chr [1:8] "1" "2" "3" "4" ...

** structure of dataset precip
 Named num [1:70] 67 54.7 7 48.5 14 17.2 20.7 13 43.4 40.2 ...
 - attr(*, "names")= chr [1:70] "Mobile" "Juneau" "Phoenix" "Little Rock" ...

** structure of dataset presidents
 Time-Series [1:120] from 1945 to 1975: NA 87 82 75 63 50 43 32 35 60 ...

** structure of dataset pressure
'data.frame':	19 obs. of  2 variables:
 $ temperature: num  0 20 40 60 80 100 120 140 160 180 ...
 $ pressure   : num  0.0002 0.0012 0.006 0.03 0.09 0.27 0.75 1.85 4.2 8.8 ...

** structure of dataset quakes
'data.frame':	1000 obs. of  5 variables:
 $ lat     : num  -20.4 -20.6 -26 -18 -20.4 ...
 $ long    : num  182 181 184 182 182 ...
 $ depth   : int  562 650 42 626 649 195 82 194 211 622 ...
 $ mag     : num  4.8 4.2 5.4 4.1 4 4 4.8 4.4 4.7 4.3 ...
 $ stations: int  41 15 43 19 11 12 43 15 35 19 ...

** structure of dataset randu
'data.frame':	400 obs. of  3 variables:
 $ x: num  0.000031 0.044495 0.82244 0.322291 0.393595 ...
 $ y: num  0.000183 0.155732 0.873416 0.648545 0.826873 ...
 $ z: num  0.000824 0.533939 0.838542 0.990648 0.418881 ...

** structure of dataset rivers
 num [1:141] 735 320 325 392 524 ...

** structure of dataset rock
'data.frame':	48 obs. of  4 variables:
 $ area : int  4990 7002 7558 7352 7943 7979 9333 8209 8393 6425 ...
 $ peri : num  2792 3893 3931 3869 3949 ...
 $ shape: num  0.0903 0.1486 0.1833 0.1171 0.1224 ...
 $ perm : num  6.3 6.3 6.3 6.3 17.1 17.1 17.1 17.1 119 119 ...

** structure of dataset sleep
'data.frame':	20 obs. of  3 variables:
 $ extra: num  0.7 -1.6 -0.2 -1.2 -0.1 3.4 3.7 0.8 0 2 ...
 $ group: Factor w/ 2 levels "1","2": 1 1 1 1 1 1 1 1 1 1 ...
 $ ID   : Factor w/ 10 levels "1","2","3","4",..: 1 2 3 4 5 6 7 8 9 10 ...

** structure of dataset stack.loss
 num [1:21] 42 37 37 28 18 18 19 20 15 14 ...

** structure of dataset stack.x
 num [1:21, 1:3] 80 80 75 62 62 62 62 62 58 58 ...
 - attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:3] "Air.Flow" "Water.Temp" "Acid.Conc."

** structure of dataset stackloss
'data.frame':	21 obs. of  4 variables:
 $ Air.Flow  : num  80 80 75 62 62 62 62 62 58 58 ...
 $ Water.Temp: num  27 27 25 24 22 23 24 24 23 18 ...
 $ Acid.Conc.: num  89 88 90 87 87 87 93 93 87 80 ...
 $ stack.loss: num  42 37 37 28 18 18 19 20 15 14 ...

** structure of dataset state.abb
 chr [1:50] "AL" "AK" "AZ" "AR" "CA" "CO" "CT" "DE" "FL" "GA" "HI" "ID" ...

** structure of dataset state.area
 num [1:50] 51609 589757 113909 53104 158693 ...

** structure of dataset state.center
List of 2
 $ x: num [1:50] -86.8 -127.2 -111.6 -92.3 -119.8 ...
 $ y: num [1:50] 32.6 49.2 34.2 34.7 36.5 ...

** structure of dataset state.division
 Factor w/ 9 levels "New England",..: 4 9 8 5 9 8 1 3 3 3 ...

** structure of dataset state.name
 chr [1:50] "Alabama" "Alaska" "Arizona" "Arkansas" "California" "Colorado" ...

** structure of dataset state.region
 Factor w/ 4 levels "Northeast","South",..: 2 4 4 2 4 4 1 2 2 2 ...

** structure of dataset state.x77
 num [1:50, 1:8] 3615 365 2212 2110 21198 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:50] "Alabama" "Alaska" "Arizona" "Arkansas" ...
  ..$ : chr [1:8] "Population" "Income" "Illiteracy" "Life Exp" ...

** structure of dataset sunspot.month
 Time-Series [1:3177] from 1749 to 2014: 58 62.6 70 55.7 85 83.5 94.8 66.3 75.9 75.5 ...

** structure of dataset sunspot.year
 Time-Series [1:289] from 1700 to 1988: 5 11 16 23 36 58 29 20 10 8 ...

** structure of dataset sunspots
 Time-Series [1:2820] from 1749 to 1984: 58 62.6 70 55.7 85 83.5 94.8 66.3 75.9 75.5 ...

** structure of dataset swiss
'data.frame':	47 obs. of  6 variables:
 $ Fertility       : num  80.2 83.1 92.5 85.8 76.9 76.1 83.8 92.4 82.4 82.9 ...
 $ Agriculture     : num  17 45.1 39.7 36.5 43.5 35.3 70.2 67.8 53.3 45.2 ...
 $ Examination     : int  15 6 5 12 17 9 16 14 12 16 ...
 $ Education       : int  12 9 5 7 15 7 7 8 7 13 ...
 $ Catholic        : num  9.96 84.84 93.4 33.77 5.16 ...
 $ Infant.Mortality: num  22.2 22.2 20.2 20.3 20.6 26.6 23.6 24.9 21 24.4 ...

** structure of dataset treering
 Time-Series [1:7980] from -6000 to 1979: 1.34 1.08 1.54 1.32 1.41 ...

** structure of dataset trees
'data.frame':	31 obs. of  3 variables:
 $ Girth : num  8.3 8.6 8.8 10.5 10.7 10.8 11 11 11.1 11.2 ...
 $ Height: num  70 65 63 72 81 83 66 75 80 75 ...
 $ Volume: num  10.3 10.3 10.2 16.4 18.8 19.7 15.6 18.2 22.6 19.9 ...

** structure of dataset uspop
 Time-Series [1:19] from 1790 to 1970: 3.93 5.31 7.24 9.64 12.9 17.1 23.2 31.4 39.8 50.2 ...

** structure of dataset volcano
 num [1:87, 1:61] 100 101 102 103 104 105 105 106 107 108 ...

** structure of dataset warpbreaks
'data.frame':	54 obs. of  3 variables:
 $ breaks : num  26 30 54 25 70 52 51 26 67 18 ...
 $ wool   : Factor w/ 2 levels "A","B": 1 1 1 1 1 1 1 1 1 1 ...
 $ tension: Factor w/ 3 levels "L","M","H": 1 1 1 1 1 1 1 1 1 2 ...

** structure of dataset women
'data.frame':	15 obs. of  2 variables:
 $ height: num  58 59 60 61 62 63 64 65 66 67 ...
 $ weight: num  115 117 120 123 126 129 132 135 139 142 ...
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