R: A Language and Environment for Statistical Computing
Reference Index
The R Core Team
Version 4.2.0 Under development (unstable) (2021-12-07)
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
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i
I 1
1 The base package 3
base-package . . . 3
.bincode . . . 3
.Device . . . 4
.Machine . . . 5
.Platform . . . 7
abbreviate . . . 9
agrep . . . 10
all . . . 12
all.equal . . . 14
all.names . . . 17
any . . . 18
aperm . . . 19
append . . . 20
apply . . . 21
args . . . 22
Arithmetic . . . 24
array . . . 26
as.data.frame . . . 28
as.Date . . . 30
as.environment . . . 33
as.function . . . 34
as.POSIX* . . . 35
AsIs . . . 38
asplit . . . 39
assign . . . 40
assignOps . . . 41
attach . . . 42
attr . . . 44
attributes . . . 46
autoload . . . 47
backsolve . . . 48
basename . . . 49
Bessel . . . 50
bindenv . . . 53
bitwise . . . 55
body . . . 56
bquote . . . 57
browser . . . 58
browserText . . . 60
builtins . . . 61
by . . . 62
c . . . 63
call . . . 64
callCC . . . 66
CallExternal . . . 67
capabilities . . . 68
cat . . . 70
cbind . . . 72
char.expand . . . 75
character . . . 76
ii
charmatch . . . 77
chartr . . . 78
chkDots . . . 80
chol . . . 81
chol2inv . . . 83
class . . . 84
col . . . 86
Colon . . . 87
colSums . . . 88
commandArgs . . . 90
comment . . . 90
Comparison . . . 91
complex . . . 93
conditions . . . 95
conflicts . . . 99
connections . . . 100
Constants . . . 110
contributors . . . 111
Control . . . 111
copyright . . . 113
crossprod . . . 113
Cstack_info . . . 114
cumsum . . . 115
curlGetHeaders . . . 116
cut . . . 117
cut.POSIXt . . . 119
data.class . . . 121
data.frame . . . 122
data.matrix . . . 124
date . . . 125
Dates . . . 126
DateTimeClasses . . . 127
dcf . . . 131
debug . . . 133
Defunct . . . 135
delayedAssign . . . 136
deparse . . . 137
deparseOpts . . . 139
Deprecated . . . 141
det . . . 142
detach . . . 143
diag . . . 145
diff . . . 146
difftime . . . 147
dim . . . 149
dimnames . . . 150
do.call . . . 152
dontCheck . . . 154
dots . . . 154
double . . . 155
dput . . . 157
drop . . . 159
iii
droplevels . . . 160
dump . . . 161
duplicated . . . 162
dyn.load . . . 165
eapply . . . 167
eigen . . . 168
encodeString . . . 170
Encoding . . . 171
environment . . . 173
EnvVar . . . 175
eval . . . 178
exists . . . 180
expand.grid . . . 182
expression . . . 183
Extract . . . 184
Extract.data.frame . . . 189
Extract.factor . . . 192
Extremes . . . 193
extSoftVersion . . . 196
factor . . . 197
file.access . . . 201
file.choose . . . 202
file.info . . . 202
file.path . . . 204
file.show . . . 205
files . . . 206
files2 . . . 209
find.package . . . 210
findInterval . . . 212
force . . . 213
forceAndCall . . . 214
Foreign . . . 215
formals . . . 217
format . . . 218
format.info . . . 221
format.pval . . . 222
formatC . . . 223
formatDL . . . 228
function . . . 229
funprog . . . 230
gc . . . 232
gc.time . . . 234
gctorture . . . 235
get . . . 236
getDLLRegisteredRoutines . . . 237
getLoadedDLLs . . . 239
getNativeSymbolInfo . . . 240
gettext . . . 242
getwd . . . 245
gl . . . 246
grep . . . 246
grepRaw . . . 252
iv
groupGeneric . . . 254
grouping . . . 256
gzcon . . . 257
hexmode . . . 258
Hyperbolic . . . 260
iconv . . . 261
icuSetCollate . . . 264
identical . . . 266
identity . . . 269
ifelse . . . 269
integer . . . 271
interaction . . . 272
interactive . . . 273
Internal . . . 274
InternalMethods . . . 274
invisible . . . 276
is.finite . . . 277
is.function . . . 279
is.language . . . 279
is.object . . . 280
is.R . . . 281
is.recursive . . . 281
is.single . . . 282
is.unsorted . . . 283
ISOdatetime . . . 284
isS4 . . . 284
isSymmetric . . . 286
jitter . . . 287
kappa . . . 288
kronecker . . . 290
l10n_info . . . 291
labels . . . 292
lapply . . . 293
Last.value . . . 296
La_library . . . 296
La_version . . . 297
length . . . 298
lengths . . . 299
levels . . . 300
libcurlVersion . . . 302
libPaths . . . 303
library . . . 304
library.dynam . . . 308
license . . . 310
list . . . 310
list.files . . . 312
list2DF . . . 314
list2env . . . 315
load . . . 316
locales . . . 318
log . . . 320
Logic . . . 322
v
logical . . . 324
LongVectors . . . 325
lower.tri . . . 326
ls . . . 327
make.names . . . 328
make.unique . . . 329
mapply . . . 330
marginSums . . . 332
mat.or.vec . . . 333
match . . . 333
match.arg . . . 335
match.call . . . 336
match.fun . . . 338
MathFun . . . 339
matmult . . . 340
matrix . . . 341
maxCol . . . 343
mean . . . 344
memCompress . . . 345
memlimits . . . 347
Memory . . . 347
Memory-limits . . . 348
memory.profile . . . 350
merge . . . 350
message . . . 353
missing . . . 354
mode . . . 355
mtfrm . . . 356
NA . . . 357
name . . . 359
names . . . 360
nargs . . . 362
nchar . . . 363
nlevels . . . 365
noquote . . . 366
norm . . . 367
normalizePath . . . 369
NotYet . . . 370
nrow . . . 371
ns-dblcolon . . . 372
ns-hooks . . . 373
ns-load . . . 374
ns-topenv . . . 377
NULL . . . 377
numeric . . . 379
NumericConstants . . . 380
numeric_version . . . 382
octmode . . . 383
on.exit . . . 385
Ops.Date . . . 386
options . . . 387
order . . . 397
vi
outer . . . 400
Paren . . . 401
parse . . . 402
paste . . . 405
path.expand . . . 407
pcre_config . . . 408
pipeOp . . . 408
plot . . . 410
pmatch . . . 411
polyroot . . . 413
pos.to.env . . . 414
pretty . . . 414
Primitive . . . 416
print . . . 417
print.data.frame . . . 419
print.default . . . 420
prmatrix . . . 422
proc.time . . . 423
prod . . . 424
proportions . . . 425
pushBack . . . 426
qr . . . 427
QR.Auxiliaries . . . 430
quit . . . 431
Quotes . . . 433
R.Version . . . 436
Random . . . 438
Random.user . . . 442
range . . . 444
rank . . . 445
rapply . . . 447
raw . . . 448
rawConnection . . . 449
rawConversion . . . 451
RdUtils . . . 453
readBin . . . 454
readChar . . . 457
readline . . . 458
readLines . . . 459
readRDS . . . 461
readRenviron . . . 463
Recall . . . 464
reg.finalizer . . . 465
regex . . . 466
regmatches . . . 470
remove . . . 472
rep . . . 473
replace . . . 476
Reserved . . . 476
rev . . . 477
Rhome . . . 477
rle . . . 478
vii
Round . . . 479
round.POSIXt . . . 481
row . . . 482
row+colnames . . . 483
row.names . . . 484
rowsum . . . 486
S3method . . . 487
sample . . . 488
save . . . 490
scale . . . 493
scan . . . 494
search . . . 498
seek . . . 499
seq . . . 500
seq.Date . . . 502
seq.POSIXt . . . 503
sequence . . . 505
serialize . . . 506
sets . . . 507
setTimeLimit . . . 508
showConnections . . . 509
shQuote . . . 511
sign . . . 512
Signals . . . 513
sink . . . 514
slice.index . . . 515
slotOp . . . 516
socketSelect . . . 517
solve . . . 518
sort . . . 519
source . . . 522
Special . . . 525
split . . . 528
sprintf . . . 530
sQuote . . . 534
srcfile . . . 536
StackOverflows . . . 539
standardGeneric . . . 539
startsWith . . . 540
Startup . . . 541
stop . . . 544
stopifnot . . . 546
strptime . . . 548
strrep . . . 554
strsplit . . . 555
strtoi . . . 557
strtrim . . . 558
structure . . . 558
strwrap . . . 559
subset . . . 560
substitute . . . 562
substr . . . 564
viii
sum . . . 565
summary . . . 567
svd . . . 568
sweep . . . 570
switch . . . 572
Syntax . . . 573
Sys.getenv . . . 575
Sys.getpid . . . 576
Sys.glob . . . 576
Sys.info . . . 578
Sys.localeconv . . . 579
sys.parent . . . 580
Sys.readlink . . . 583
Sys.setenv . . . 584
Sys.setFileTime . . . 585
Sys.sleep . . . 586
sys.source . . . 587
Sys.time . . . 588
Sys.which . . . 589
system . . . 590
system.file . . . 592
system.time . . . 593
system2 . . . 594
t . . . 596
table . . . 597
tabulate . . . 600
tapply . . . 601
taskCallback . . . 603
taskCallbackManager . . . 605
taskCallbackNames . . . 606
tempfile . . . 607
textConnection . . . 609
tilde . . . 611
timezones . . . 612
toString . . . 616
trace . . . 617
traceback . . . 621
tracemem . . . 623
transform . . . 624
Trig . . . 626
trimws . . . 627
try . . . 628
typeof . . . 630
unique . . . 631
unlink . . . 632
unlist . . . 633
unname . . . 635
UseMethod . . . 636
userhooks . . . 638
utf8Conversion . . . 640
UTF8filepaths . . . 642
validUTF8 . . . 643
ix
vector . . . 644
Vectorize . . . 646
warning . . . 647
warnings . . . 649
weekdays . . . 651
which . . . 652
which.min . . . 654
with . . . 655
withVisible . . . 657
write . . . 658
writeLines . . . 659
xtfrm . . . 660
zapsmall . . . 661
zpackages . . . 661
zutils . . . 662
2 The compiler package 663 compile . . . 663
3 The datasets package 667 datasets-package . . . 667
ability.cov . . . 667
airmiles . . . 668
AirPassengers . . . 669
airquality . . . 670
anscombe . . . 671
attenu . . . 672
attitude . . . 673
austres . . . 674
beavers . . . 674
BJsales . . . 676
BOD . . . 676
cars . . . 677
ChickWeight . . . 678
chickwts . . . 679
CO2 . . . 680
co2 . . . 681
crimtab . . . 682
discoveries . . . 684
DNase . . . 684
esoph . . . 685
euro . . . 687
eurodist . . . 688
EuStockMarkets . . . 688
faithful . . . 689
Formaldehyde . . . 690
freeny . . . 691
HairEyeColor . . . 692
Harman23.cor . . . 693
Harman74.cor . . . 693
Indometh . . . 694
infert . . . 695
InsectSprays . . . 696
x
iris . . . 697
islands . . . 698
JohnsonJohnson . . . 698
LakeHuron . . . 699
lh . . . 699
LifeCycleSavings . . . 700
Loblolly . . . 701
longley . . . 702
lynx . . . 703
morley . . . 703
mtcars . . . 704
nhtemp . . . 705
Nile . . . 706
nottem . . . 707
npk . . . 708
occupationalStatus . . . 709
Orange . . . 709
OrchardSprays . . . 710
PlantGrowth . . . 711
precip . . . 712
presidents . . . 713
pressure . . . 714
Puromycin . . . 714
quakes . . . 716
randu . . . 717
rivers . . . 718
rock . . . 718
sleep . . . 719
stackloss . . . 720
state . . . 721
sunspot.month . . . 722
sunspot.year . . . 723
sunspots . . . 724
swiss . . . 725
Theoph . . . 726
Titanic . . . 727
ToothGrowth . . . 728
treering . . . 729
trees . . . 730
UCBAdmissions . . . 731
UKDriverDeaths . . . 732
UKgas . . . 733
UKLungDeaths . . . 734
USAccDeaths . . . 734
USArrests . . . 735
USJudgeRatings . . . 736
USPersonalExpenditure . . . 737
uspop . . . 737
VADeaths . . . 738
volcano . . . 739
warpbreaks . . . 739
women . . . 740
xi
WorldPhones . . . 741
WWWusage . . . 742
4 The grDevices package 743 grDevices-package . . . 743
adjustcolor . . . 743
as.graphicsAnnot . . . 745
as.raster . . . 745
axisTicks . . . 747
boxplot.stats . . . 748
bringToTop . . . 750
cairo . . . 751
cairoSymbolFont . . . 753
check.options . . . 754
chull . . . 755
cm . . . 756
col2rgb . . . 756
colorRamp . . . 758
colors . . . 760
contourLines . . . 761
convertColor . . . 762
densCols . . . 764
dev . . . 765
dev.capabilities . . . 767
dev.capture . . . 768
dev.flush . . . 769
dev.interactive . . . 769
dev.size . . . 770
dev2 . . . 771
dev2bitmap . . . 773
devAskNewPage . . . 775
Devices . . . 775
embedFonts . . . 777
extendrange . . . 778
getGraphicsEvent . . . 779
gray . . . 782
gray.colors . . . 783
grSoftVersion . . . 784
hcl . . . 785
Hershey . . . 787
hsv . . . 790
Japanese . . . 791
make.rgb . . . 792
msgWindow . . . 794
n2mfrow . . . 794
nclass . . . 795
palette . . . 797
Palettes . . . 799
pdf . . . 803
pdf.options . . . 807
pictex . . . 808
plotmath . . . 810
png . . . 815
xii
postscript . . . 818
postscriptFonts . . . 825
pretty.Date . . . 827
ps.options . . . 828
quartz . . . 830
quartzFonts . . . 832
recordGraphics . . . 833
recordPlot . . . 834
rgb . . . 836
rgb2hsv . . . 837
savePlot . . . 839
trans3d . . . 840
Type1Font . . . 840
windows . . . 842
windows.options . . . 846
windowsFonts . . . 847
x11 . . . 848
X11Fonts . . . 853
xfig . . . 854
xy.coords . . . 856
xyTable . . . 857
xyz.coords . . . 858
5 The graphics package 861 graphics-package . . . 861
abline . . . 861
arrows . . . 863
assocplot . . . 864
Axis . . . 866
axis . . . 867
axis.POSIXct . . . 870
axTicks . . . 871
barplot . . . 873
box . . . 877
boxplot . . . 878
boxplot.matrix . . . 881
bxp . . . 882
cdplot . . . 885
clip . . . 887
contour . . . 888
convertXY . . . 890
coplot . . . 892
curve . . . 894
dotchart . . . 896
filled.contour . . . 898
fourfoldplot . . . 900
frame . . . 902
grid . . . 903
hist . . . 904
hist.POSIXt . . . 907
identify . . . 909
image . . . 911
layout . . . 914
xiii
legend . . . 916
lines . . . 921
locator . . . 922
matplot . . . 923
mosaicplot . . . 926
mtext . . . 929
pairs . . . 930
panel.smooth . . . 933
par . . . 934
persp . . . 943
pie . . . 946
plot.data.frame . . . 948
plot.default . . . 949
plot.design . . . 952
plot.factor . . . 953
plot.formula . . . 954
plot.histogram . . . 956
plot.raster . . . 957
plot.table . . . 958
plot.window . . . 959
plot.xy . . . 960
points . . . 961
polygon . . . 965
polypath . . . 967
rasterImage . . . 969
rect . . . 970
rug . . . 971
screen . . . 972
segments . . . 974
smoothScatter . . . 975
spineplot . . . 977
stars . . . 980
stem . . . 983
stripchart . . . 984
strwidth . . . 985
sunflowerplot . . . 987
symbols . . . 989
text . . . 991
title . . . 994
units . . . 995
xspline . . . 996
6 The grid package 999 grid-package . . . 999
absolute.size . . . 1000
arrow . . . 1001
as.mask . . . 1001
calcStringMetric . . . 1002
dataViewport . . . 1004
depth . . . 1005
deviceLoc . . . 1006
drawDetails . . . 1007
editDetails . . . 1008
xiv
editViewport . . . 1009
explode . . . 1010
gEdit . . . 1010
getNames . . . 1011
gpar . . . 1012
gPath . . . 1014
Grid . . . 1015
Grid Viewports . . . 1015
grid.add . . . 1019
grid.bezier . . . 1020
grid.cap . . . 1021
grid.circle . . . 1022
grid.clip . . . 1023
grid.convert . . . 1025
grid.copy . . . 1027
grid.curve . . . 1027
grid.delay . . . 1029
grid.display.list . . . 1030
grid.DLapply . . . 1031
grid.draw . . . 1032
grid.edit . . . 1033
grid.force . . . 1034
grid.frame . . . 1036
grid.function . . . 1037
grid.get . . . 1039
grid.grab . . . 1040
grid.grep . . . 1042
grid.grill . . . 1043
grid.grob . . . 1044
grid.group . . . 1045
grid.layout . . . 1047
grid.lines . . . 1049
grid.locator . . . 1051
grid.ls . . . 1052
grid.move.to . . . 1054
grid.newpage . . . 1055
grid.null . . . 1056
grid.pack . . . 1057
grid.path . . . 1058
grid.place . . . 1061
grid.plot.and.legend . . . 1062
grid.points . . . 1063
grid.polygon . . . 1064
grid.pretty . . . 1065
grid.raster . . . 1066
grid.record . . . 1067
grid.rect . . . 1068
grid.refresh . . . 1070
grid.remove . . . 1070
grid.reorder . . . 1071
grid.segments . . . 1073
grid.set . . . 1074
xv
grid.show.layout . . . 1075
grid.show.viewport . . . 1076
grid.stroke . . . 1077
grid.text . . . 1079
grid.xaxis . . . 1081
grid.xspline . . . 1082
grid.yaxis . . . 1084
grobCoords . . . 1086
grobName . . . 1087
grobWidth . . . 1087
grobX . . . 1088
legendGrob . . . 1089
makeContent . . . 1090
patterns . . . 1091
plotViewport . . . 1093
Querying the Viewport Tree . . . 1093
resolveRasterSize . . . 1095
roundrect . . . 1096
showGrob . . . 1097
showViewport . . . 1098
stringWidth . . . 1099
unit . . . 1100
unit.c . . . 1102
unit.length . . . 1103
unit.pmin . . . 1103
unit.rep . . . 1104
unitType . . . 1105
valid.just . . . 1106
validDetails . . . 1107
viewportTransform . . . 1107
vpPath . . . 1109
widthDetails . . . 1110
Working with Viewports . . . 1111
xDetails . . . 1113
xsplinePoints . . . 1114
7 The methods package 1117 methods-package . . . 1117
.BasicFunsList . . . 1118
as . . . 1118
BasicClasses . . . 1120
callGeneric . . . 1121
callNextMethod . . . 1123
canCoerce . . . 1127
cbind2 . . . 1127
Classes . . . 1129
classesToAM . . . 1129
Classes_Details . . . 1131
className . . . 1134
classRepresentation-class . . . 1136
Documentation . . . 1137
dotsMethods . . . 1138
environment-class . . . 1141
xvi
envRefClass-class . . . 1142
evalSource . . . 1143
findClass . . . 1146
findMethods . . . 1147
fixPre1.8 . . . 1150
genericFunction-class . . . 1151
GenericFunctions . . . 1152
getClass . . . 1155
getMethod . . . 1157
getPackageName . . . 1160
hasArg . . . 1161
implicitGeneric . . . 1162
inheritedSlotNames . . . 1164
initialize-methods . . . 1165
Introduction . . . 1166
is . . . 1168
isSealedMethod . . . 1170
language-class . . . 1171
LinearMethodsList-class . . . 1172
LocalReferenceClasses . . . 1173
makeClassRepresentation . . . 1174
method.skeleton . . . 1175
MethodDefinition-class . . . 1176
Methods . . . 1177
MethodsList-class . . . 1177
Methods_Details . . . 1178
Methods_for_Nongenerics . . . 1182
Methods_for_S3 . . . 1187
MethodWithNext-class . . . 1189
new . . . 1190
nonStructure-class . . . 1192
ObjectsWithPackage-class . . . 1192
promptClass . . . 1193
promptMethods . . . 1194
ReferenceClasses . . . 1195
removeMethod . . . 1206
representation . . . 1207
S3Part . . . 1208
S4groupGeneric . . . 1211
SClassExtension-class . . . 1213
selectSuperClasses . . . 1214
setAs . . . 1215
setClass . . . 1218
setClassUnion . . . 1223
setGeneric . . . 1224
setGroupGeneric . . . 1228
setIs . . . 1229
setLoadActions . . . 1233
setMethod . . . 1236
setOldClass . . . 1240
show . . . 1243
showMethods . . . 1245
xvii
signature-class . . . 1247
slot . . . 1248
StructureClasses . . . 1250
testInheritedMethods . . . 1252
TraceClasses . . . 1253
validObject . . . 1254
8 The parallel package 1257 parallel-package . . . 1257
clusterApply . . . 1258
detectCores . . . 1261
makeCluster . . . 1262
mcaffinity . . . 1264
mcchildren . . . 1265
mcfork . . . 1267
mclapply . . . 1269
mcparallel . . . 1272
pvec . . . 1275
RNGstreams . . . 1277
splitIndices . . . 1278
9 The splines package 1281 splines-package . . . 1281
asVector . . . 1281
backSpline . . . 1282
bs . . . 1283
interpSpline . . . 1284
ns . . . 1285
periodicSpline . . . 1287
polySpline . . . 1288
predict.bs . . . 1289
predict.bSpline . . . 1290
splineDesign . . . 1291
splineKnots . . . 1292
splineOrder . . . 1293
xyVector . . . 1294
10 The stats package 1295 stats-package . . . 1295
.checkMFClasses . . . 1295
acf . . . 1296
acf2AR . . . 1299
add1 . . . 1299
addmargins . . . 1302
aggregate . . . 1303
AIC . . . 1306
alias . . . 1308
anova . . . 1309
anova.glm . . . 1310
anova.lm . . . 1311
anova.mlm . . . 1313
ansari.test . . . 1315
aov . . . 1317
xviii
approxfun . . . 1319
ar . . . 1322
ar.ols . . . 1325
arima . . . 1327
arima.sim . . . 1331
arima0 . . . 1332
ARMAacf . . . 1336
ARMAtoMA . . . 1337
as.hclust . . . 1338
asOneSidedFormula . . . 1339
ave . . . 1339
bandwidth . . . 1340
bartlett.test . . . 1342
Beta . . . 1343
binom.test . . . 1346
Binomial . . . 1348
biplot . . . 1349
biplot.princomp . . . 1351
birthday . . . 1352
Box.test . . . 1353
C . . . 1354
cancor . . . 1355
case+variable.names . . . 1357
Cauchy . . . 1358
chisq.test . . . 1359
Chisquare . . . 1361
cmdscale . . . 1364
coef . . . 1366
complete.cases . . . 1367
confint . . . 1368
constrOptim . . . 1369
contrast . . . 1371
contrasts . . . 1373
convolve . . . 1374
cophenetic . . . 1375
cor . . . 1377
cor.test . . . 1380
cov.wt . . . 1382
cpgram . . . 1384
cutree . . . 1385
decompose . . . 1386
delete.response . . . 1387
dendrapply . . . 1389
dendrogram . . . 1390
density . . . 1395
deriv . . . 1398
deviance . . . 1401
df.residual . . . 1402
diffinv . . . 1403
dist . . . 1404
Distributions . . . 1407
dummy.coef . . . 1408
xix
ecdf . . . 1409
eff.aovlist . . . 1411
effects . . . 1413
embed . . . 1414
expand.model.frame . . . 1415
Exponential . . . 1416
extractAIC . . . 1417
factanal . . . 1419
factor.scope . . . 1422
family . . . 1423
FDist . . . 1427
fft . . . 1429
filter . . . 1430
fisher.test . . . 1432
fitted . . . 1435
fivenum . . . 1436
fligner.test . . . 1436
formula . . . 1438
formula.nls . . . 1440
friedman.test . . . 1441
ftable . . . 1443
ftable.formula . . . 1444
GammaDist . . . 1446
Geometric . . . 1448
getInitial . . . 1450
glm . . . 1451
glm.control . . . 1456
glm.summaries . . . 1457
hclust . . . 1458
heatmap . . . 1461
HoltWinters . . . 1464
Hypergeometric . . . 1467
identify.hclust . . . 1469
influence.measures . . . 1470
integrate . . . 1474
interaction.plot . . . 1476
IQR . . . 1478
is.empty.model . . . 1479
isoreg . . . 1479
KalmanLike . . . 1481
kernapply . . . 1483
kernel . . . 1484
kmeans . . . 1486
kruskal.test . . . 1488
ks.test . . . 1490
ksmooth . . . 1492
lag . . . 1493
lag.plot . . . 1494
line . . . 1496
listof . . . 1497
lm . . . 1497
lm.fit . . . 1501
xx
lm.influence . . . 1502
lm.summaries . . . 1504
loadings . . . 1505
loess . . . 1506
loess.control . . . 1509
Logistic . . . 1510
logLik . . . 1511
loglin . . . 1513
Lognormal . . . 1515
lowess . . . 1516
ls.diag . . . 1517
ls.print . . . 1519
lsfit . . . 1519
mad . . . 1521
mahalanobis . . . 1522
make.link . . . 1523
makepredictcall . . . 1524
manova . . . 1525
mantelhaen.test . . . 1526
mauchly.test . . . 1528
mcnemar.test . . . 1530
median . . . 1531
medpolish . . . 1532
model.extract . . . 1533
model.frame . . . 1534
model.matrix . . . 1537
model.tables . . . 1538
monthplot . . . 1540
mood.test . . . 1542
Multinom . . . 1543
na.action . . . 1544
na.contiguous . . . 1545
na.fail . . . 1546
naprint . . . 1547
naresid . . . 1547
NegBinomial . . . 1548
nextn . . . 1550
nlm . . . 1551
nlminb . . . 1554
nls . . . 1556
nls.control . . . 1562
NLSstAsymptotic . . . 1563
NLSstClosestX . . . 1564
NLSstLfAsymptote . . . 1565
NLSstRtAsymptote . . . 1566
nobs . . . 1566
Normal . . . 1567
numericDeriv . . . 1569
offset . . . 1570
oneway.test . . . 1571
optim . . . 1572
optimize . . . 1577
xxi order.dendrogram . . . 1579 p.adjust . . . 1580 Pair . . . 1582 pairwise.prop.test . . . 1583 pairwise.t.test . . . 1584 pairwise.table . . . 1585 pairwise.wilcox.test . . . 1585 plot.acf . . . 1586 plot.density . . . 1588 plot.HoltWinters . . . 1588 plot.isoreg . . . 1589 plot.lm . . . 1591 plot.ppr . . . 1594 plot.profile.nls . . . 1595 plot.spec . . . 1597 plot.stepfun . . . 1598 plot.ts . . . 1600 Poisson . . . 1601 poisson.test . . . 1603 poly . . . 1604 power . . . 1606 power.anova.test . . . 1607 power.prop.test . . . 1608 power.t.test . . . 1610 PP.test . . . 1611 ppoints . . . 1612 ppr . . . 1613 prcomp . . . 1617 predict . . . 1619 predict.Arima . . . 1620 predict.glm . . . 1622 predict.HoltWinters . . . 1623 predict.lm . . . 1625 predict.loess . . . 1627 predict.nls . . . 1629 predict.smooth.spline . . . 1630 preplot . . . 1631 princomp . . . 1632 print.power.htest . . . 1634 print.ts . . . 1635 printCoefmat . . . 1636 profile . . . 1638 profile.nls . . . 1638 proj . . . 1639 prop.test . . . 1641 prop.trend.test . . . 1643 qqnorm . . . 1644 quade.test . . . 1646 quantile . . . 1648 r2dtable . . . 1650 read.ftable . . . 1651 rect.hclust . . . 1654
xxii
relevel . . . 1655 reorder.default . . . 1655 reorder.dendrogram . . . 1657 replications . . . 1658 reshape . . . 1659 residuals . . . 1663 runmed . . . 1664 rWishart . . . 1666 scatter.smooth . . . 1668 screeplot . . . 1669 sd . . . 1670 se.contrast . . . 1670 selfStart . . . 1672 setNames . . . 1674 shapiro.test . . . 1675 sigma . . . 1676 SignRank . . . 1678 simulate . . . 1679 smooth . . . 1681 smooth.spline . . . 1683 smoothEnds . . . 1688 sortedXyData . . . 1689 spec.ar . . . 1690 spec.pgram . . . 1691 spec.taper . . . 1693 spectrum . . . 1694 splinefun . . . 1696 SSasymp . . . 1699 SSasympOff . . . 1701 SSasympOrig . . . 1702 SSbiexp . . . 1704 SSD . . . 1705 SSfol . . . 1706 SSfpl . . . 1708 SSgompertz . . . 1709 SSlogis . . . 1710 SSmicmen . . . 1712 SSweibull . . . 1713 start . . . 1714 stat.anova . . . 1715 stats-deprecated . . . 1716 step . . . 1716 stepfun . . . 1718 stl . . . 1720 stlmethods . . . 1723 StructTS . . . 1724 summary.aov . . . 1726 summary.glm . . . 1727 summary.lm . . . 1729 summary.manova . . . 1731 summary.nls . . . 1733 summary.princomp . . . 1734
xxiii supsmu . . . 1735 symnum . . . 1736 t.test . . . 1738 TDist . . . 1740 termplot . . . 1743 terms . . . 1745 terms.formula . . . 1746 terms.object . . . 1747 time . . . 1748 toeplitz . . . 1749 ts . . . 1750 ts-methods . . . 1752 ts.plot . . . 1752 ts.union . . . 1753 tsdiag . . . 1754 tsp . . . 1755 tsSmooth . . . 1756 Tukey . . . 1756 TukeyHSD . . . 1758 Uniform . . . 1759 uniroot . . . 1761 update . . . 1764 update.formula . . . 1765 var.test . . . 1766 varimax . . . 1767 vcov . . . 1768 Weibull . . . 1769 weighted.mean . . . 1771 weighted.residuals . . . 1772 weights . . . 1773 wilcox.test . . . 1773 Wilcoxon . . . 1777 window . . . 1779 xtabs . . . 1780
11 The stats4 package 1785
stats4-package . . . 1785 coef-methods . . . 1785 confint-methods . . . 1786 logLik-methods . . . 1786 mle . . . 1786 mle-class . . . 1790 plot-methods . . . 1791 profile-methods . . . 1791 profile.mle-class . . . 1792 show-methods . . . 1793 summary-methods . . . 1793 summary.mle-class . . . 1794 update-methods . . . 1794 vcov-methods . . . 1795
12 The tcltk package 1797
tcltk-package . . . 1797
xxiv
TclInterface . . . 1797 tclServiceMode . . . 1802 TkCommands . . . 1802 tkpager . . . 1806 tkProgressBar . . . 1807 tkStartGUI . . . 1808 TkWidgetcmds . . . 1808 TkWidgets . . . 1811 tk_choose.dir . . . 1813 tk_choose.files . . . 1814 tk_messageBox . . . 1815 tk_select.list . . . 1815
13 The tools package 1817
tools-package . . . 1817 .print.via.format . . . 1817 add_datalist . . . 1818 assertCondition . . . 1819 bibstyle . . . 1820 buildVignette . . . 1822 buildVignettes . . . 1823 charsets . . . 1825 checkFF . . . 1825 checkMD5sums . . . 1827 checkPoFiles . . . 1827 checkRd . . . 1829 checkRdaFiles . . . 1831 checkTnF . . . 1832 checkVignettes . . . 1833 check_packages_in_dir . . . 1834 codoc . . . 1836 compactPDF . . . 1838 CRANtools . . . 1839 delimMatch . . . 1841 dependsOnPkgs . . . 1842 encoded_text_to_latex . . . 1843 fileutils . . . 1845 find_gs_cmd . . . 1846 getVignetteInfo . . . 1847 HTMLheader . . . 1848 HTMLlinks . . . 1849 loadRdMacros . . . 1849 makevars . . . 1851 make_translations_pkg . . . 1851 md5sum . . . 1852 package_dependencies . . . 1853 package_native_routine_registration_skeleton . . . 1854 parseLatex . . . 1857 parse_Rd . . . 1858 pskill . . . 1859 psnice . . . 1861 QC . . . 1862 Rcmd . . . 1863
xxv Rd2HTML . . . 1864 Rd2txt_options . . . 1866 Rdiff . . . 1868 Rdindex . . . 1869 RdTextFilter . . . 1869 Rdutils . . . 1871 read.00Index . . . 1872 showNonASCII . . . 1872 startDynamicHelp . . . 1873 SweaveTeXFilter . . . 1874 testInstalledPackage . . . 1875 texi2dvi . . . 1876 toHTML . . . 1877 tools-deprecated . . . 1878 toRd . . . 1879 toTitleCase . . . 1880 undoc . . . 1880 update_PACKAGES . . . 1881 update_pkg_po . . . 1883 userdir . . . 1885 vignetteEngine . . . 1885 vignetteInfo . . . 1887 write_PACKAGES . . . 1888 xgettext . . . 1890
14 The utils package 1893
utils-package . . . 1893 adist . . . 1893 alarm . . . 1895 apropos . . . 1896 aregexec . . . 1897 arrangeWindows . . . 1898 askYesNo . . . 1900 aspell . . . 1901 aspell-utils . . . 1903 available.packages . . . 1904 BATCH . . . 1907 bibentry . . . 1908 browseEnv . . . 1912 browseURL . . . 1913 browseVignettes . . . 1915 bug.report . . . 1916 capture.output . . . 1918 changedFiles . . . 1919 charClass . . . 1921 choose.dir . . . 1923 choose.files . . . 1924 chooseBioCmirror . . . 1925 chooseCRANmirror . . . 1926 citation . . . 1927 cite . . . 1928 citEntry . . . 1931 clipboard . . . 1932
xxvi
close.socket . . . 1933 combn . . . 1934 compareVersion . . . 1935 COMPILE . . . 1936 contrib.url . . . 1937 count.fields . . . 1937 create.post . . . 1938 data . . . 1940 dataentry . . . 1942 debugcall . . . 1944 debugger . . . 1945 demo . . . 1947 DLL.version . . . 1949 download.file . . . 1949 download.packages . . . 1953 edit . . . 1954 edit.data.frame . . . 1956 example . . . 1957 file.edit . . . 1959 file_test . . . 1960 findLineNum . . . 1961 fix . . . 1963 flush.console . . . 1964 format . . . 1964 getAnywhere . . . 1965 getFromNamespace . . . 1966 getParseData . . . 1968 getS3method . . . 1970 getWindowsHandle . . . 1971 getWindowsHandles . . . 1972 glob2rx . . . 1973 globalVariables . . . 1974 hashtab . . . 1976 hasName . . . 1978 head . . . 1979 help . . . 1982 help.request . . . 1985 help.search . . . 1986 help.start . . . 1988 hsearch-utils . . . 1989 INSTALL . . . 1991 install.packages . . . 1993 installed.packages . . . 1998 isS3method . . . 2000 isS3stdGeneric . . . 2001 LINK . . . 2001 localeToCharset . . . 2002 ls.str . . . 2003 maintainer . . . 2005 make.packages.html . . . 2006 make.socket . . . 2007 menu . . . 2008
xxvii methods . . . 2009 mirrorAdmin . . . 2011 modifyList . . . 2012 news . . . 2012 nsl . . . 2015 object.size . . . 2015 package.skeleton . . . 2018 packageDescription . . . 2020 packageName . . . 2022 packageStatus . . . 2022 page . . . 2024 person . . . 2025 PkgUtils . . . 2028 process.events . . . 2029 prompt . . . 2030 promptData . . . 2032 promptPackage . . . 2033 Question . . . 2034 rcompgen . . . 2036 read.DIF . . . 2041 read.fortran . . . 2043 read.fwf . . . 2044 read.socket . . . 2046 read.table . . . 2047 readRegistry . . . 2052 recover . . . 2053 relist . . . 2054 REMOVE . . . 2056 remove.packages . . . 2057 removeSource . . . 2058 RHOME . . . 2059 roman . . . 2059 Rprof . . . 2061 Rprofmem . . . 2063 Rscript . . . 2065 RShowDoc . . . 2066 RSiteSearch . . . 2067 rtags . . . 2068 Rtangle . . . 2070 RweaveLatex . . . 2072 Rwin configuration . . . 2076 savehistory . . . 2077 select.list . . . 2079 sessionInfo . . . 2080 setRepositories . . . 2082 setWindowTitle . . . 2083 SHLIB . . . 2084 shortPathName . . . 2085 sourceutils . . . 2086 stack . . . 2087 str . . . 2089 strcapture . . . 2092
xxviii
summaryRprof . . . 2093 Sweave . . . 2095 SweaveSyntConv . . . 2097 tar . . . 2098 toLatex . . . 2101 txtProgressBar . . . 2102 type.convert . . . 2103 untar . . . 2105 unzip . . . 2108 update.packages . . . 2109 url.show . . . 2111 URLencode . . . 2112 utils-deprecated . . . 2113 View . . . 2113 vignette . . . 2114 warnErrList . . . 2116 winDialog . . . 2117 winextras . . . 2118 winMenus . . . 2118 winProgressBar . . . 2120 write.table . . . 2121 zip . . . 2124
II 2127
15 The KernSmooth package 2129
bkde . . . 2129 bkde2D . . . 2130 bkfe . . . 2132 dpih . . . 2133 dpik . . . 2134 dpill . . . 2135 locpoly . . . 2137
16 The MASS package 2139
abbey . . . 2139 accdeaths . . . 2139 addterm . . . 2140 Aids2 . . . 2141 Animals . . . 2142 anorexia . . . 2143 anova.negbin . . . 2143 area . . . 2144 bacteria . . . 2145 bandwidth.nrd . . . 2146 bcv . . . 2147 beav1 . . . 2148 beav2 . . . 2149 Belgian-phones . . . 2150 biopsy . . . 2151 birthwt . . . 2152 Boston . . . 2153
xxix boxcox . . . 2154 cabbages . . . 2155 caith . . . 2156 Cars93 . . . 2156 cats . . . 2158 cement . . . 2158 chem . . . 2159 con2tr . . . 2159 confint-MASS . . . 2160 contr.sdif . . . 2161 coop . . . 2162 corresp . . . 2163 cov.rob . . . 2164 cov.trob . . . 2166 cpus . . . 2167 crabs . . . 2168 Cushings . . . 2169 DDT . . . 2169 deaths . . . 2170 denumerate . . . 2170 dose.p . . . 2171 drivers . . . 2172 dropterm . . . 2172 eagles . . . 2174 epil . . . 2175 eqscplot . . . 2176 farms . . . 2177 fgl . . . 2178 fitdistr . . . 2179 forbes . . . 2180 fractions . . . 2181 GAGurine . . . 2182 galaxies . . . 2183 gamma.dispersion . . . 2183 gamma.shape . . . 2184 gehan . . . 2185 genotype . . . 2186 geyser . . . 2187 gilgais . . . 2188 ginv . . . 2189 glm.convert . . . 2189 glm.nb . . . 2190 glmmPQL . . . 2191 hills . . . 2192 hist.scott . . . 2193 housing . . . 2194 huber . . . 2195 hubers . . . 2196 immer . . . 2197 Insurance . . . 2198 isoMDS . . . 2199 kde2d . . . 2200
xxx
lda . . . 2201 ldahist . . . 2203 leuk . . . 2205 lm.gls . . . 2206 lm.ridge . . . 2207 loglm . . . 2208 logtrans . . . 2210 lqs . . . 2211 mammals . . . 2214 mca . . . 2215 mcycle . . . 2216 Melanoma . . . 2216 menarche . . . 2217 michelson . . . 2218 minn38 . . . 2218 motors . . . 2219 muscle . . . 2220 mvrnorm . . . 2221 negative.binomial . . . 2222 newcomb . . . 2223 nlschools . . . 2223 npk . . . 2224 npr1 . . . 2225 Null . . . 2226 oats . . . 2227 OME . . . 2228 painters . . . 2230 pairs.lda . . . 2231 parcoord . . . 2232 petrol . . . 2233 Pima.tr . . . 2234 plot.lda . . . 2235 plot.mca . . . 2236 plot.profile . . . 2236 polr . . . 2237 predict.glmmPQL . . . 2240 predict.lda . . . 2241 predict.lqs . . . 2242 predict.mca . . . 2243 predict.qda . . . 2244 profile.glm . . . 2245 qda . . . 2246 quine . . . 2248 Rabbit . . . 2249 rational . . . 2250 renumerate . . . 2251 rlm . . . 2251 rms.curv . . . 2254 rnegbin . . . 2255 road . . . 2256 rotifer . . . 2256 Rubber . . . 2257
xxxi sammon . . . 2258 ships . . . 2259 shoes . . . 2260 shrimp . . . 2260 shuttle . . . 2261 Sitka . . . 2261 Sitka89 . . . 2262 Skye . . . 2263 snails . . . 2264 SP500 . . . 2265 stdres . . . 2265 steam . . . 2266 stepAIC . . . 2266 stormer . . . 2268 studres . . . 2269 summary.loglm . . . 2270 summary.negbin . . . 2271 summary.rlm . . . 2272 survey . . . 2273 synth.tr . . . 2274 theta.md . . . 2274 topo . . . 2276 Traffic . . . 2276 truehist . . . 2277 ucv . . . 2278 UScereal . . . 2279 UScrime . . . 2280 VA . . . 2281 waders . . . 2281 whiteside . . . 2283 width.SJ . . . 2284 write.matrix . . . 2285 wtloss . . . 2286
17 The Matrix package 2287
abIndex-class . . . 2287 abIseq . . . 2288 all-methods . . . 2289 all.equal-methods . . . 2290 atomicVector-class . . . 2290 band . . . 2291 bandSparse . . . 2292 bdiag . . . 2293 BunchKaufman-methods . . . 2295 CAex . . . 2297 cBind . . . 2298 CHMfactor-class . . . 2299 chol . . . 2302 chol2inv-methods . . . 2304 Cholesky . . . 2304 Cholesky-class . . . 2307 colSums . . . 2308 compMatrix-class . . . 2310
xxxii
condest . . . 2311 CsparseMatrix-class . . . 2313 ddenseMatrix-class . . . 2314 ddiMatrix-class . . . 2315 denseMatrix-class . . . 2316 dgCMatrix-class . . . 2317 dgeMatrix-class . . . 2318 dgRMatrix-class . . . 2319 dgTMatrix-class . . . 2320 Diagonal . . . 2321 diagonalMatrix-class . . . 2323 diagU2N . . . 2324 dMatrix-class . . . 2325 dpoMatrix-class . . . 2327 drop0 . . . 2328 dsCMatrix-class . . . 2329 dsparseMatrix-class . . . 2331 dsRMatrix-class . . . 2332 dsyMatrix-class . . . 2333 dtCMatrix-class . . . 2334 dtpMatrix-class . . . 2336 dtRMatrix-class . . . 2337 dtrMatrix-class . . . 2338 expand . . . 2340 expm . . . 2341 externalFormats . . . 2342 facmul . . . 2343 forceSymmetric . . . 2344 formatSparseM . . . 2345 generalMatrix-class . . . 2347 graph-sparseMatrix . . . 2347 Hilbert . . . 2348 image-methods . . . 2349 index-class . . . 2351 indMatrix-class . . . 2352 invPerm . . . 2354 is.na-methods . . . 2355 is.null.DN . . . 2356 isSymmetric-methods . . . 2357 isTriangular . . . 2358 KhatriRao . . . 2359 KNex . . . 2360 kronecker-methods . . . 2361 ldenseMatrix-class . . . 2362 ldiMatrix-class . . . 2363 lgeMatrix-class . . . 2363 lsparseMatrix-classes . . . 2364 lsyMatrix-class . . . 2366 ltrMatrix-class . . . 2367 lu . . . 2368 LU-class . . . 2370 mat2triplet . . . 2371
xxxiii Matrix . . . 2372 Matrix-class . . . 2374 matrix-products . . . 2376 MatrixClass . . . 2378 MatrixFactorization-class . . . 2379 ndenseMatrix-class . . . 2380 nearPD . . . 2381 ngeMatrix-class . . . 2384 nMatrix-class . . . 2385 nnzero . . . 2386 norm . . . 2387 nsparseMatrix-classes . . . 2388 nsyMatrix-class . . . 2390 ntrMatrix-class . . . 2391 number-class . . . 2392 pMatrix-class . . . 2392 printSpMatrix . . . 2394 qr-methods . . . 2397 rankMatrix . . . 2399 rcond . . . 2401 rep2abI . . . 2403 replValue-class . . . 2404 rleDiff-class . . . 2405 rsparsematrix . . . 2405 RsparseMatrix-class . . . 2407 Schur . . . 2408 Schur-class . . . 2409 solve-methods . . . 2410 sparse.model.matrix . . . 2413 sparseLU-class . . . 2415 SparseM-conversions . . . 2416 sparseMatrix . . . 2417 sparseMatrix-class . . . 2420 sparseQR-class . . . 2422 sparseVector . . . 2424 sparseVector-class . . . 2425 spMatrix . . . 2428 symmetricMatrix-class . . . 2429 symmpart . . . 2431 triangularMatrix-class . . . 2432 TsparseMatrix-class . . . 2433 uniqTsparse . . . 2434 unpack . . . 2435 Unused-classes . . . 2437 updown . . . 2437 USCounties . . . 2438 wrld_1deg . . . 2439 [-methods . . . 2440 [<–methods . . . 2441
%&%-methods . . . 2442
18 The boot package 2445
abc.ci . . . 2445
xxxiv
acme . . . 2447 aids . . . 2447 aircondit . . . 2448 amis . . . 2449 aml . . . 2450 beaver . . . 2451 bigcity . . . 2452 boot . . . 2452 boot.array . . . 2458 boot.ci . . . 2459 brambles . . . 2462 breslow . . . 2463 calcium . . . 2464 cane . . . 2465 capability . . . 2466 catsM . . . 2466 cav . . . 2467 cd4 . . . 2468 cd4.nested . . . 2468 censboot . . . 2469 channing . . . 2473 claridge . . . 2474 cloth . . . 2475 co.transfer . . . 2475 coal . . . 2476 control . . . 2477 corr . . . 2479 cum3 . . . 2479 cv.glm . . . 2480 darwin . . . 2482 dogs . . . 2483 downs.bc . . . 2483 ducks . . . 2484 EEF.profile . . . 2485 empinf . . . 2486 envelope . . . 2488 exp.tilt . . . 2490 fir . . . 2492 freq.array . . . 2492 frets . . . 2493 glm.diag . . . 2494 glm.diag.plots . . . 2495 gravity . . . 2496 hirose . . . 2497 Imp.Estimates . . . 2498 imp.weights . . . 2500 inv.logit . . . 2501 islay . . . 2502 jack.after.boot . . . 2502 k3.linear . . . 2504 linear.approx . . . 2505 lines.saddle.distn . . . 2507
xxxv logit . . . 2509 manaus . . . 2509 melanoma . . . 2510 motor . . . 2511 neuro . . . 2512 nitrofen . . . 2512 nodal . . . 2513 norm.ci . . . 2514 nuclear . . . 2516 paulsen . . . 2517 plot.boot . . . 2517 poisons . . . 2520 polar . . . 2520 print.boot . . . 2521 print.bootci . . . 2522 print.saddle.distn . . . 2523 print.simplex . . . 2523 remission . . . 2524 saddle . . . 2525 saddle.distn . . . 2527 saddle.distn.object . . . 2530 salinity . . . 2531 simplex . . . 2531 simplex.object . . . 2533 smooth.f . . . 2534 sunspot . . . 2536 survival . . . 2536 tau . . . 2537 tilt.boot . . . 2538 tsboot . . . 2541 tuna . . . 2544 urine . . . 2545 var.linear . . . 2546 wool . . . 2546
19 The class package 2549
batchSOM . . . 2549 condense . . . 2550 knn . . . 2551 knn.cv . . . 2552 knn1 . . . 2553 lvq1 . . . 2554 lvq2 . . . 2555 lvq3 . . . 2556 lvqinit . . . 2557 lvqtest . . . 2558 multiedit . . . 2559 olvq1 . . . 2560 reduce.nn . . . 2561 SOM . . . 2562 somgrid . . . 2563
xxxvi
20 The cluster package 2565
agnes . . . 2565 agnes.object . . . 2569 agriculture . . . 2570 animals . . . 2571 bannerplot . . . 2572 chorSub . . . 2574 clara . . . 2575 clara.object . . . 2578 clusGap . . . 2579 clusplot . . . 2583 clusplot.default . . . 2584 coef.hclust . . . 2588 daisy . . . 2589 diana . . . 2592 dissimilarity.object . . . 2594 ellipsoidhull . . . 2595 fanny . . . 2597 fanny.object . . . 2599 flower . . . 2601 lower.to.upper.tri.inds . . . 2602 mona . . . 2602 mona.object . . . 2604 pam . . . 2605 pam.object . . . 2608 partition.object . . . 2610 plantTraits . . . 2611 plot.agnes . . . 2612 plot.diana . . . 2614 plot.mona . . . 2616 plot.partition . . . 2617 pltree . . . 2619 pluton . . . 2620 predict.ellipsoid . . . 2621 print.agnes . . . 2622 print.clara . . . 2623 print.diana . . . 2623 print.dissimilarity . . . 2624 print.fanny . . . 2625 print.mona . . . 2625 print.pam . . . 2626 ruspini . . . 2626 silhouette . . . 2627 sizeDiss . . . 2630 summary.agnes . . . 2631 summary.clara . . . 2631 summary.diana . . . 2632 summary.mona . . . 2633 summary.pam . . . 2633 twins.object . . . 2634 volume.ellipsoid . . . 2634 votes.repub . . . 2635
xxxvii
xclara . . . 2636
21 The codetools package 2639
checkUsage . . . 2639 codetools . . . 2640 findGlobals . . . 2642 showTree . . . 2642
22 The foreign package 2645
lookup.xport . . . 2645 read.arff . . . 2646 read.dbf . . . 2646 read.dta . . . 2648 read.epiinfo . . . 2649 read.mtp . . . 2650 read.octave . . . 2651 read.spss . . . 2652 read.ssd . . . 2655 read.systat . . . 2657 read.xport . . . 2658 S3 read functions . . . 2659 write.arff . . . 2660 write.dbf . . . 2661 write.dta . . . 2662 write.foreign . . . 2664
23 The lattice package 2667
A_01_Lattice . . . 2667 B_00_xyplot . . . 2670 B_01_xyplot.ts . . . 2687 B_02_barchart.table . . . 2690 B_03_histogram . . . 2692 B_04_qqmath . . . 2696 B_05_qq . . . 2699 B_06_levelplot . . . 2701 B_07_cloud . . . 2706 B_08_splom . . . 2711 B_09_tmd . . . 2715 B_10_rfs . . . 2716 B_11_oneway . . . 2717 C_01_trellis.device . . . 2718 C_02_trellis.par.get . . . 2720 C_03_simpleTheme . . . 2723 C_04_lattice.options . . . 2725 C_05_print.trellis . . . 2726 C_06_update.trellis . . . 2730 C_07_shingles . . . 2732 D_draw.colorkey . . . 2734 D_draw.key . . . 2735 D_level.colors . . . 2735 D_make.groups . . . 2737 D_simpleKey . . . 2738 D_strip.default . . . 2739
xxxviii
D_trellis.object . . . 2741 E_interaction . . . 2742 F_1_panel.barchart . . . 2748 F_1_panel.bwplot . . . 2750 F_1_panel.cloud . . . 2752 F_1_panel.densityplot . . . 2756 F_1_panel.dotplot . . . 2757 F_1_panel.histogram . . . 2758 F_1_panel.levelplot . . . 2759 F_1_panel.pairs . . . 2761 F_1_panel.parallel . . . 2764 F_1_panel.qqmath . . . 2765 F_1_panel.stripplot . . . 2767 F_1_panel.xyplot . . . 2768 F_2_llines . . . 2770 F_2_panel.functions . . . 2773 F_2_panel.loess . . . 2776 F_2_panel.qqmathline . . . 2777 F_2_panel.smoothScatter . . . 2778 F_2_panel.spline . . . 2780 F_2_panel.superpose . . . 2781 F_2_panel.violin . . . 2783 F_3_prepanel.default . . . 2784 F_3_prepanel.functions . . . 2786 G_axis.default . . . 2787 G_banking . . . 2790 G_latticeParseFormula . . . 2792 G_packet.panel.default . . . 2793 G_panel.axis . . . 2794 G_panel.number . . . 2796 G_Rows . . . 2797 G_utilities.3d . . . 2798 H_barley . . . 2799 H_environmental . . . 2800 H_ethanol . . . 2801 H_melanoma . . . 2802 H_singer . . . 2803 H_USMortality . . . 2804 I_lset . . . 2806
24 The mgcv package 2807
anova.gam . . . 2807 bam . . . 2809 bam.update . . . 2815 bandchol . . . 2817 betar . . . 2818 blas.thread.test . . . 2819 bug.reports.mgcv . . . 2820 choldrop . . . 2820 choose.k . . . 2822 columb . . . 2824 concurvity . . . 2825 cox.ph . . . 2827
xxxix cox.pht . . . 2831 cSplineDes . . . 2833 dDeta . . . 2834 exclude.too.far . . . 2835 extract.lme.cov . . . 2836 family.mgcv . . . 2838 FFdes . . . 2839 fix.family.link . . . 2840 fixDependence . . . 2841 formula.gam . . . 2842 formXtViX . . . 2844 fs.test . . . 2845 full.score . . . 2846 gam . . . 2847 gam.check . . . 2856 gam.control . . . 2858 gam.convergence . . . 2861 gam.fit . . . 2862 gam.fit3 . . . 2863 gam.fit5.post.proc . . . 2866 gam.mh . . . 2867 gam.models . . . 2869 gam.outer . . . 2875 gam.reparam . . . 2877 gam.scale . . . 2878 gam.selection . . . 2878 gam.side . . . 2881 gam.vcomp . . . 2883 gam2objective . . . 2885 gamlss.etamu . . . 2886 gamlss.gH . . . 2887 gamm . . . 2888 gammals . . . 2894 gamObject . . . 2896 gamSim . . . 2899 gaulss . . . 2900 get.var . . . 2901 gevlss . . . 2902 ginla . . . 2904 gumbls . . . 2907 identifiability . . . 2908 in.out . . . 2909 influence.gam . . . 2910 initial.sp . . . 2911 inSide . . . 2912 interpret.gam . . . 2913 jagam . . . 2914 k.check . . . 2919 ldetS . . . 2920 ldTweedie . . . 2921 linear.functional.terms . . . 2923 logLik.gam . . . 2926
xl
ls.size . . . 2928 magic . . . 2929 magic.post.proc . . . 2933 mgcv.FAQ . . . 2934 mgcv.package . . . 2936 mgcv.parallel . . . 2938 mini.roots . . . 2940 missing.data . . . 2941 model.matrix.gam . . . 2942 mono.con . . . 2943 mroot . . . 2944 multinom . . . 2945 mvn . . . 2947 negbin . . . 2948 new.name . . . 2950 notExp . . . 2951 notExp2 . . . 2952 null.space.dimension . . . 2954 ocat . . . 2955 one.se.rule . . . 2956 pcls . . . 2957 pdIdnot . . . 2961 pdTens . . . 2962 pen.edf . . . 2963 place.knots . . . 2964 plot.gam . . . 2965 polys.plot . . . 2970 predict.bam . . . 2971 predict.gam . . . 2974 Predict.matrix . . . 2979 Predict.matrix.cr.smooth . . . 2981 Predict.matrix.soap.film . . . 2982 print.gam . . . 2984 psum.chisq . . . 2985 qq.gam . . . 2987 random.effects . . . 2989 residuals.gam . . . 2991 rig . . . 2992 rmvn . . . 2993 Rrank . . . 2994 rTweedie . . . 2995 s . . . 2996 scat . . . 2999 sdiag . . . 3000 shash . . . 3001 single.index . . . 3003 Sl.inirep . . . 3005 Sl.repara . . . 3006 Sl.setup . . . 3006 slanczos . . . 3007 smooth.construct . . . 3008 smooth.construct.ad.smooth.spec . . . 3013
xli smooth.construct.bs.smooth.spec . . . 3016 smooth.construct.cr.smooth.spec . . . 3019 smooth.construct.ds.smooth.spec . . . 3021 smooth.construct.fs.smooth.spec . . . 3023 smooth.construct.gp.smooth.spec . . . 3025 smooth.construct.mrf.smooth.spec . . . 3028 smooth.construct.ps.smooth.spec . . . 3031 smooth.construct.re.smooth.spec . . . 3033 smooth.construct.so.smooth.spec . . . 3036 smooth.construct.sos.smooth.spec . . . 3041 smooth.construct.t2.smooth.spec . . . 3044 smooth.construct.tensor.smooth.spec . . . 3045 smooth.construct.tp.smooth.spec . . . 3046 smooth.info . . . 3049 smooth.terms . . . 3050 smooth2random . . . 3053 smoothCon . . . 3055 sp.vcov . . . 3058 spasm.construct . . . 3059 step.gam . . . 3060 summary.gam . . . 3061 t2 . . . 3065 te . . . 3069 tensor.prod.model.matrix . . . 3073 totalPenaltySpace . . . 3075 trichol . . . 3076 trind.generator . . . 3077 Tweedie . . . 3078 twlss . . . 3080 uniquecombs . . . 3081 vcov.gam . . . 3083 vis.gam . . . 3084 XWXd . . . 3086 ziP . . . 3089 ziplss . . . 3091
25 The nlme package 3095
ACF . . . 3095 ACF.gls . . . 3096 ACF.lme . . . 3097 Alfalfa . . . 3098 allCoef . . . 3099 anova.gls . . . 3100 anova.lme . . . 3102 as.matrix.corStruct . . . 3104 as.matrix.pdMat . . . 3105 as.matrix.reStruct . . . 3106 asOneFormula . . . 3107 Assay . . . 3108 asTable . . . 3108 augPred . . . 3109 balancedGrouped . . . 3111 bdf . . . 3112
xlii
BodyWeight . . . 3113 Cefamandole . . . 3114 Coef . . . 3114 coef.corStruct . . . 3115 coef.gnls . . . 3116 coef.lme . . . 3117 coef.lmList . . . 3118 coef.modelStruct . . . 3120 coef.pdMat . . . 3121 coef.reStruct . . . 3122 coef.varFunc . . . 3123 collapse . . . 3124 collapse.groupedData . . . 3125 compareFits . . . 3126 comparePred . . . 3127 corAR1 . . . 3128 corARMA . . . 3130 corCAR1 . . . 3132 corClasses . . . 3133 corCompSymm . . . 3134 corExp . . . 3135 corFactor . . . 3137 corFactor.corStruct . . . 3138 corGaus . . . 3139 corLin . . . 3140 corMatrix . . . 3142 corMatrix.corStruct . . . 3143 corMatrix.pdMat . . . 3144 corMatrix.reStruct . . . 3145 corNatural . . . 3146 corRatio . . . 3147 corSpatial . . . 3148 corSpher . . . 3150 corSymm . . . 3152 Covariate . . . 3153 Covariate.varFunc . . . 3154 Dialyzer . . . 3155 Dim . . . 3155 Dim.corSpatial . . . 3156 Dim.corStruct . . . 3157 Dim.pdMat . . . 3158 Earthquake . . . 3159 ergoStool . . . 3160 Fatigue . . . 3160 fdHess . . . 3161 fitted.glsStruct . . . 3162 fitted.gnlsStruct . . . 3163 fitted.lme . . . 3163 fitted.lmeStruct . . . 3164 fitted.lmList . . . 3165 fitted.nlmeStruct . . . 3166 fixed.effects . . . 3167
xliii fixef.lmList . . . 3168 formula.pdBlocked . . . 3169 formula.pdMat . . . 3170 formula.reStruct . . . 3171 gapply . . . 3171 Gasoline . . . 3173 getCovariate . . . 3173 getCovariate.corStruct . . . 3174 getCovariate.data.frame . . . 3175 getCovariate.varFunc . . . 3176 getCovariateFormula . . . 3177 getData . . . 3177 getData.gls . . . 3178 getData.lme . . . 3179 getData.lmList . . . 3180 getGroups . . . 3180 getGroups.corStruct . . . 3181 getGroups.data.frame . . . 3182 getGroups.gls . . . 3183 getGroups.lme . . . 3184 getGroups.lmList . . . 3185 getGroups.varFunc . . . 3186 getGroupsFormula . . . 3187 getResponse . . . 3188 getResponseFormula . . . 3189 getVarCov . . . 3189 gls . . . 3190 glsControl . . . 3192 glsObject . . . 3194 glsStruct . . . 3195 Glucose . . . 3195 Glucose2 . . . 3196 gnls . . . 3196 gnlsControl . . . 3198 gnlsObject . . . 3200 gnlsStruct . . . 3201 groupedData . . . 3202 gsummary . . . 3204 Gun . . . 3206 IGF . . . 3206 Initialize . . . 3207 Initialize.corStruct . . . 3208 Initialize.glsStruct . . . 3209 Initialize.lmeStruct . . . 3209 Initialize.reStruct . . . 3210 Initialize.varFunc . . . 3211 intervals . . . 3212 intervals.gls . . . 3213 intervals.lme . . . 3214 intervals.lmList . . . 3215 isBalanced . . . 3216 isInitialized . . . 3217
xliv
LDEsysMat . . . 3218 lme . . . 3219 lme.groupedData . . . 3221 lme.lmList . . . 3224 lmeControl . . . 3226 lmeObject . . . 3227 lmeStruct . . . 3229 lmList . . . 3230 lmList.groupedData . . . 3231 logDet . . . 3232 logDet.corStruct . . . 3233 logDet.pdMat . . . 3234 logDet.reStruct . . . 3234 logLik.corStruct . . . 3235 logLik.glsStruct . . . 3236 logLik.gnls . . . 3237 logLik.gnlsStruct . . . 3237 logLik.lme . . . 3238 logLik.lmeStruct . . . 3239 logLik.lmList . . . 3240 logLik.reStruct . . . 3241 logLik.varFunc . . . 3242 Machines . . . 3243 MathAchieve . . . 3243 MathAchSchool . . . 3244 Matrix . . . 3244 Matrix.pdMat . . . 3245 Matrix.reStruct . . . 3246 Meat . . . 3246 Milk . . . 3247 model.matrix.reStruct . . . 3248 Muscle . . . 3249 Names . . . 3249 Names.formula . . . 3250 Names.pdBlocked . . . 3251 Names.pdMat . . . 3252 Names.reStruct . . . 3253 needUpdate . . . 3254 needUpdate.modelStruct . . . 3254 Nitrendipene . . . 3255 nlme . . . 3256 nlme.nlsList . . . 3259 nlmeControl . . . 3261 nlmeObject . . . 3263 nlmeStruct . . . 3264 nlsList . . . 3265 nlsList.selfStart . . . 3267 Oats . . . 3268 Orthodont . . . 3268 Ovary . . . 3269 Oxboys . . . 3270 Oxide . . . 3270
xlv pairs.compareFits . . . 3271 pairs.lme . . . 3272 pairs.lmList . . . 3273 PBG . . . 3275 pdBlocked . . . 3275 pdClasses . . . 3277 pdCompSymm . . . 3278 pdConstruct . . . 3279 pdConstruct.pdBlocked . . . 3280 pdDiag . . . 3281 pdFactor . . . 3282 pdFactor.reStruct . . . 3283 pdIdent . . . 3284 pdLogChol . . . 3285 pdMat . . . 3287 pdMatrix . . . 3288 pdMatrix.reStruct . . . 3289 pdNatural . . . 3290 pdSymm . . . 3291 Phenobarb . . . 3292 phenoModel . . . 3293 Pixel . . . 3294 plot.ACF . . . 3295 plot.augPred . . . 3296 plot.compareFits . . . 3297 plot.gls . . . 3298 plot.intervals.lmList . . . 3299 plot.lme . . . 3300 plot.lmList . . . 3302 plot.nffGroupedData . . . 3303 plot.nfnGroupedData . . . 3305 plot.nmGroupedData . . . 3306 plot.ranef.lme . . . 3308 plot.ranef.lmList . . . 3310 plot.Variogram . . . 3311 pooledSD . . . 3312 predict.gls . . . 3313 predict.gnls . . . 3314 predict.lme . . . 3315 predict.lmList . . . 3316 predict.nlme . . . 3317 print.summary.pdMat . . . 3319 print.varFunc . . . 3320 qqnorm.gls . . . 3320 qqnorm.lme . . . 3322 Quinidine . . . 3323 quinModel . . . 3324 Rail . . . 3325 random.effects . . . 3326 ranef.lme . . . 3326 ranef.lmList . . . 3328 RatPupWeight . . . 3329
xlvi
recalc . . . 3330 recalc.corStruct . . . 3331 recalc.modelStruct . . . 3332 recalc.reStruct . . . 3333 recalc.varFunc . . . 3333 Relaxin . . . 3334 Remifentanil . . . 3335 residuals.gls . . . 3336 residuals.glsStruct . . . 3337 residuals.gnlsStruct . . . 3338 residuals.lme . . . 3339 residuals.lmeStruct . . . 3340 residuals.lmList . . . 3341 residuals.nlmeStruct . . . 3342 reStruct . . . 3343 simulate.lme . . . 3344 solve.pdMat . . . 3346 solve.reStruct . . . 3346 Soybean . . . 3347 splitFormula . . . 3348 Spruce . . . 3349 summary.corStruct . . . 3349 summary.gls . . . 3350 summary.lme . . . 3351 summary.lmList . . . 3352 summary.modelStruct . . . 3354 summary.nlsList . . . 3354 summary.pdMat . . . 3356 summary.varFunc . . . 3357 Tetracycline1 . . . 3358 Tetracycline2 . . . 3358 update.modelStruct . . . 3359 update.varFunc . . . 3359 varClasses . . . 3360 varComb . . . 3361 varConstPower . . . 3362 varConstProp . . . 3363 VarCorr . . . 3366 varExp . . . 3367 varFixed . . . 3368 varFunc . . . 3369 varIdent . . . 3369 Variogram . . . 3371 Variogram.corExp . . . 3372 Variogram.corGaus . . . 3373 Variogram.corLin . . . 3374 Variogram.corRatio . . . 3375 Variogram.corSpatial . . . 3376 Variogram.corSpher . . . 3377 Variogram.default . . . 3378 Variogram.gls . . . 3379 Variogram.lme . . . 3381
xlvii varPower . . . 3383 varWeights . . . 3384 varWeights.glsStruct . . . 3385 varWeights.lmeStruct . . . 3385 Wafer . . . 3386 Wheat . . . 3387 Wheat2 . . . 3387 [.pdMat . . . 3388
26 The nnet package 3389
class.ind . . . 3389 multinom . . . 3390 nnet . . . 3391 nnetHess . . . 3394 predict.nnet . . . 3395 which.is.max . . . 3396
27 The rpart package 3397
car.test.frame . . . 3397 car90 . . . 3398 cu.summary . . . 3400 kyphosis . . . 3401 labels.rpart . . . 3401 meanvar.rpart . . . 3402 na.rpart . . . 3403 path.rpart . . . 3404 plot.rpart . . . 3405 plotcp . . . 3406 post.rpart . . . 3407 predict.rpart . . . 3408 print.rpart . . . 3410 printcp . . . 3411 prune.rpart . . . 3412 residuals.rpart . . . 3412 rpart . . . 3413 rpart.control . . . 3415 rpart.exp . . . 3416 rpart.object . . . 3417 rsq.rpart . . . 3418 snip.rpart . . . 3419 solder.balance . . . 3420 stagec . . . 3421 summary.rpart . . . 3422 text.rpart . . . 3423 xpred.rpart . . . 3424
28 The spatial package 3427
anova.trls . . . 3427 correlogram . . . 3428 expcov . . . 3429 Kaver . . . 3430 Kenvl . . . 3431 Kfn . . . 3432
xlviii
ppgetregion . . . 3433 ppinit . . . 3433 pplik . . . 3434 ppregion . . . 3435 predict.trls . . . 3435 prmat . . . 3436 Psim . . . 3437 semat . . . 3438 SSI . . . 3439 Strauss . . . 3440 surf.gls . . . 3441 surf.ls . . . 3442 trls.influence . . . 3443 trmat . . . 3444 variogram . . . 3445
29 The survival package 3447
aareg . . . 3447 aeqSurv . . . 3450 aggregate.survfit . . . 3451 agreg.fit . . . 3452 aml . . . 3453 anova.coxph . . . 3453 attrassign . . . 3454 basehaz . . . 3456 bladder . . . 3456 blogit . . . 3458 cch . . . 3459 cgd . . . 3461 cgd0 . . . 3462 cipoisson . . . 3463 clogit . . . 3464 cluster . . . 3466 colon . . . 3467 concordance . . . 3468 concordancefit . . . 3470 cox.zph . . . 3471 coxph . . . 3473 coxph.control . . . 3477 coxph.detail . . . 3479 coxph.object . . . 3480 coxph.wtest . . . 3481 coxsurv.fit . . . 3482 diabetic . . . 3483 dsurvreg . . . 3484 finegray . . . 3485 flchain . . . 3487 frailty . . . 3489 gbsg . . . 3491 heart . . . 3492 is.ratetable . . . 3493 kidney . . . 3493 levels.Surv . . . 3494
xlix lines.survfit . . . 3495 logan . . . 3497 logLik.coxph . . . 3498 lung . . . 3499 mgus . . . 3500 mgus2 . . . 3501 model.frame.coxph . . . 3502 model.matrix.coxph . . . 3503 myeloid . . . 3504 myeloma . . . 3505 nafld . . . 3505 neardate . . . 3507 nsk . . . 3508 nwtco . . . 3510 ovarian . . . 3511 pbc . . . 3512 pbcseq . . . 3513 plot.aareg . . . 3515 plot.cox.zph . . . 3515 plot.survfit . . . 3517 predict.coxph . . . 3520 predict.survreg . . . 3522 print.aareg . . . 3523 print.summary.coxph . . . 3524 print.summary.survexp . . . 3525 print.summary.survfit . . . 3525 print.survfit . . . 3526 pseudo . . . 3527 pspline . . . 3529 pyears . . . 3530 quantile.survfit . . . 3533 ratetable . . . 3534 ratetableDate . . . 3535 ratetables . . . 3536 rats . . . 3537 rats2 . . . 3538 reliability . . . 3538 residuals.coxph . . . 3540 residuals.survfit . . . 3541 residuals.survreg . . . 3542 retinopathy . . . 3544 rhDNase . . . 3545 ridge . . . 3546 rotterdam . . . 3547 royston . . . 3549 rttright . . . 3550 solder . . . 3551 stanford2 . . . 3552 statefig . . . 3552 strata . . . 3554 summary.aareg . . . 3555 summary.coxph . . . 3557
l
summary.pyears . . . 3558 summary.survexp . . . 3559 summary.survfit . . . 3560 Surv . . . 3562 Surv-methods . . . 3564 Surv2 . . . 3566 Surv2data . . . 3567 survcheck . . . 3568 survdiff . . . 3569 survexp . . . 3571 survexp.fit . . . 3574 survexp.object . . . 3575 survfit . . . 3576 survfit.coxph . . . 3577 survfit.formula . . . 3579 survfit.matrix . . . 3583 survfit.object . . . 3585 survfit0 . . . 3587 survfitcoxph.fit . . . 3588 survival-deprecated . . . 3589 survobrien . . . 3590 survreg . . . 3591 survreg.control . . . 3593 survreg.distributions . . . 3594 survreg.object . . . 3595 survregDtest . . . 3596 survSplit . . . 3597 tcut . . . 3599 tmerge . . . 3600 tobin . . . 3602 transplant . . . 3603 udca . . . 3604 untangle.specials . . . 3605 uspop2 . . . 3606 vcov.coxph . . . 3607 veteran . . . 3607 xtfrm.Surv . . . 3608 yates . . . 3609 yates_setup . . . 3610
Index 3613
Part I
1
Chapter 1
The base package
base-package The R Base Package
Description
Base R functions Details
This package contains the basic functions which let R function as a language: arithmetic, in- put/output, basic programming support, etc. Its contents are available through inheritance from any environment.
For a complete list of functions, uselibrary(help = "base").
.bincode Bin a Numeric Vector
Description
Bin a numeric vector and return integer codes for the binning.
Usage
.bincode(x, breaks, right = TRUE, include.lowest = FALSE)
Arguments
x a numeric vector which is to be converted to integer codes by binning.
breaks a numeric vector of two or more cut points, sorted in increasing order.
right logical, indicating if the intervals should be closed on the right (and open on the left) or vice versa.
include.lowest logical, indicating if an ‘x[i]’ equal to the lowest (or highest, for right = FALSE)
‘breaks’ value should be included in the first (or last) bin.
3
4 .Device Details
This is a ‘barebones’ version ofcut.default(labels = FALSE) intended for use in other functions which have checked the arguments passed. (Note the different order of the arguments they have in common.)
Unlikecut, thebreaks do not need to be unique. An input can only fall into a zero-length interval if it is closed at both ends, so only ifinclude.lowest = TRUE and it is the first (or last for right = FALSE) interval.
Value
An integer vector of the same length asx indicating which bin each element falls into (the leftmost bin being bin1). NaN and NA elements of x are mapped to NA codes, as are values outside range of breaks.
See Also
cut,tabulate
Examples
## An example with non-unique breaks:
x <- c(0, 0.01, 0.5, 0.99, 1) b <- c(0, 0, 1, 1)
.bincode(x, b, TRUE) .bincode(x, b, FALSE) .bincode(x, b, TRUE, TRUE) .bincode(x, b, FALSE, TRUE)
.Device Lists of Open/Active Graphics Devices
Description
A pairlist of the names of open graphics devices is stored in.Devices. The name of the active device (seedev.cur) is stored in.Device. Both are symbols and so appear in the base namespace.
Value
.Device is a length-one character vector.
.Devices is apairlistof length-one character vectors. The first entry is always"null device", and there are as many entries as the maximal number of graphics devices which have been simul- taneously active. If a device has been removed, its entry will be"" until the device number is reused.
Devices may add attributes to the character vector: for example devices which write to a file may record its path in attribute"filepath".
.Machine 5
.Machine Numerical Characteristics of the Machine
Description
.Machine is a variable holding information on the numerical characteristics of the machine R is running on, such as the largest double or integer and the machine’s precision.
Usage .Machine
Details
The algorithm is based on Cody’s (1988) subroutine MACHAR. As all current implementations of R use 32-bit integers and use IEC 60559 floating-point (double precision) arithmetic, the"integer"
and"double" related values are the same for almost all R builds.
Note that on most platforms smaller positive values than.Machine$double.xmin can occur. On a typical R platform the smallest positive double is about5e-324.
Value
A list with components
double.eps the smallest positive floating-point number x such that 1 + x != 1. It equals double.base ^ ulp.digits if either double.base is 2 or double.rounding is 0; otherwise, it is (double.base ^ double.ulp.digits) / 2. Normally 2.220446e-16.
double.neg.eps a small positive floating-point number x such that 1 - x != 1. It equals double.base ^ double.neg.ulp.digits if double.base is 2 or double.rounding is 0; otherwise, it is (double.base
^ double.neg.ulp.digits) / 2. Normally 1.110223e-16. As double.neg.ulp.digits is bounded below by -(double.digits + 3), double.neg.eps may not be the smallest number that can alter 1 by subtrac- tion.
double.xmin the smallest non-zero normalized floating-point number, a power of the radix, i.e.,double.base ^ double.min.exp. Normally 2.225074e-308.
double.xmax the largest normalized floating-point number. Typically, it is equal to (1 - double.neg.eps) * double.base ^ double.max.exp, but on some machines it is only the second or third largest such number, being too small by 1 or 2 units in the last digit of the significand. Normally1.797693e+308. Note that larger unnormalized numbers can occur.
double.base the radix for the floating-point representation: normally2.
double.digits the number of base digits in the floating-point significand: normally 53.
double.rounding
the rounding action, one of 0 if floating-point addition chops;
1 if floating-point addition rounds, but not in the IEEE style;
2 if floating-point addition rounds in the IEEE style;