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string start or end with another string startup initialization at start of an r session stop stop function execution stopifnot ensure the truth of r expressions strptime date time conversion functions to and from character strrep repeat the elements of a character vector strsplit split the elements of a character vector strtoi convert strings to integers strtrim trim character strings to specified display widths structure attribute specification strwrap wrap character strings to format paragraphs subset subsetting vectors matrices and data frames substitute substituting and quoting expressions substr substrings of a character vector sum sum of vector elements summary object summaries svd singular value decomposition of a matrix sweep sweep out array summaries switch select one of a list of alternatives syntax operator syntax and precedence sys getenv get environment variables sys getpid get the process id of the r session sys glob wildcard expansion on file paths sys info extract system and user information sys localeconv find details of the numerical and monetary representations in sys parent functions to access the function call stack sys readlink read file symbolic links sys setenv set or unset environment variables sys setfiletime set file time sys sleep suspend execution for a time interval sys source parse and evaluate expressions from a file system invoke a system command system2 invoke a system command system file find names of r system files system time cpu time used sys time get current date and time sys which find full paths to executables t matrix transpose table cross tabulation and table creation tabulate tabulation for vectors tapply apply a function over a ragged array taskcallback add or remove a top level task callback taskcallbackmanager create an r level task callback manager taskcallbacknames query the names of the current internal top level task tempfile create names for temporary files textconnections text connections tilde tilde operator timezones time zones tostring convert an r object to a character string trace interactive tracing and debugging of calls to a function or traceback get and print call stacks tracemem trace copying of objects transform transform an object for example a data frame trig trigonometric functions trimws remove leading trailing whitespace try try an expression allowing error recovery typeof the type of an object unique extract unique elements unix signals interrupting execution of r unlink delete files and directories unlist flatten lists unname remove names or dimnames usemethod class methods userhooks functions to get and set hooks for load attach detach and utf8conversion convert integer vectors to or from utf 8 encoded character utf8filepaths file paths not in the native encoding validutf8 check if a character vector is validly encoded vector vectors vectorize vectorize a scalar function version version information warning warning messages warnings print warning messages weekday posixt extract parts of a posixt or date object which which indices are true which min where is the min or max or first true or false windows shell invoke a system command using a shell windows shell exec open a file or url using windows file associations with evaluate an expression in a data environment withvisible return both a value and its visibility write write data to a file writelines write lines to a connection xtfrm auxiliary function for sorting and ranking zapsmall rounding of numbers zapping small ones to zero zmachine numerical characteristics of the machine zpackages listing of packages zscript scripting language interface zutils miscellaneous internal programming utilities compiler compile byte code compiler datasets ability cov ability and intelligence tests airmiles passenger miles on commercial us airlines 1937 1960 airpassengers monthly airline passenger numbers 1949 1960 airquality new york air quality measurements anscombe anscombe s quartet of identical simple linear regressions attenu the joyner boore attenuation data attitude the chatterjee price attitude data austres quarterly time series of the number of australian residents beavers body temperature series of two beavers bjsales sales data with leading indicator bod biochemical oxygen demand cars speed and stopping distances of cars chickweight weight versus age of chicks on different diets chickwts chicken weights by feed type co2 mauna loa atmospheric co2 concentration crimtab student s 3000 criminals data datasets package the r datasets package discoveries yearly numbers of important discoveries dnase elisa assay of dnase esoph smoking alcohol and o esophageal cancer euro conversion rates of euro currencies eurodist distances between european cities and between us cities eustockmarkets daily closing prices of major european stock indices faithful old faithful geyser data formaldehyde determination of formaldehyde freeny freeny s revenue data haireyecolor hair and eye color of statistics students harman23 cor harman example 2 3 harman74 cor harman example 7 4 indometh pharmacokinetics of indomethacin infert infertility after spontaneous and induced abortion insectsprays effectiveness of insect sprays iris edgar anderson s iris data islands areas of the world s major landmasses johnsonjohnson quarterly earnings per johnson johnson share lakehuron level of lake huron 1875 1972 lh luteinizing hormone in blood samples lifecyclesavings intercountry life cycle savings data loblolly growth of loblolly pine trees longley longley s economic regression data lynx annual canadian lynx trappings 1821 1934 morley michelson speed of light data mtcars motor trend car road tests nhtemp average yearly temperatures in new haven nile flow of the river nile nottem average monthly temperatures at nottingham 1920 1939 npk classical n p k factorial experiment occupationalstatus occupational status of fathers and their sons orange growth of orange trees orchardsprays potency of orchard sprays plantgrowth results from an experiment on plant growth precip annual precipitation in us cities presidents quarterly approval ratings of us presidents pressure vapor pressure of mercury as a function of temperature puromycin reaction velocity of an enzymatic reaction quakes locations of earthquakes off fiji randu random numbers from congruential generator randu rivers lengths of major north american rivers rock measurements on petroleum rock samples sleep student s sleep data stackloss brownlee s stack loss plant data state us state facts and figures sunspot month monthly sunspot data from 1749 to present sunspots monthly sunspot numbers 1749 1983 sunspot year yearly sunspot data 1700 1988 swiss swiss fertility and socioeconomic indicators 1888 data theoph pharmacokinetics of theophylline titanic survival of passengers on the titanic toothgrowth the effect of vitamin c on tooth growth in guinea pigs treering yearly treering data 6000 1979 trees diameter height and volume for black cherry trees ucbadmissions student admissions at uc berkeley ukdriverdeaths road casualties in great britain 1969 84 ukgas uk quarterly gas consumption uklungdeaths monthly deaths from lung diseases in the uk usaccdeaths accidental deaths in the us 1973 1978 usarrests violent crime rates by us state usjudgeratings lawyers ratings of state judges in the us superior court uspersonalexpenditure personal expenditure data uspop populations recorded by the us census vadeaths death rates in virginia 1940 volcano topographic information on auckland s maunga whau volcano warpbreaks the number of breaks in yarn during weaving women average heights and weights for american women worldphones the world s telephones wwwusage internet usage per minute zco2 carbon dioxide uptake in grass plants graphics abline add straight lines to a plot arrows add arrows to a plot assocplot association plots axis add an axis to a plot axis posixct date and date time plotting functions axticks compute axis tickmark locations barplot bar plots box draw a box around a plot boxplot box plots boxplot matrix draw a boxplot for each column row of a matrix bxp draw box plots from summaries cdplot conditional density plots clip set clipping region contour display contours convertxy convert between graphics coordinate systems coplot conditioning plots curve draw function plots dotchart cleveland s dot plots filled contour level contour plots fourfoldplot fourfold plots frame create start a new plot frame graphics defunct defunct functions in package graphics graphics package the r graphics package grid add grid to a plot hist histograms hist posixt histogram of a date or date time object identify identify points in a scatter plot image display a color image layout specifying complex plot arrangements legend add legends to plots lines add connected line segments to a plot locator graphical input matplot plot columns of matrices mosaicplot mosaic plots mtext write text into the margins of a plot pairs scatterplot matrices panel smooth simple panel plot par set or query graphical parameters persp perspective plots pie pie charts plot dataframe plot method for data frames plot default the default scatterplot function plot design plot univariate effects of a design or model plot factor plotting factor variables plot formula formula notation for scatterplots plothistogram plot histograms plot raster plotting raster images plot table plot methods for table objects plot window set up world coordinates for graphics window plot xy basic internal plot function points add points to a plot polygon polygon drawing polypath path drawing rasterimage draw one or more raster images rect draw one or more rectangles rug add a rug to a plot screen creating and controlling multiple screens on a single device segments add line segments to a plot smoothscatter scatterplots with smoothed densities color representation spineplot spine plots and spinograms stars star spider radar plots and segment diagrams stem stem and leaf plots stripchart 1 d scatter plots strwidth plotting dimensions of character strings and math expressions sunflowerplot produce a sunflower scatter plot symbols draw symbols circles squares stars thermometers text add text to a plot title plot annotation units graphical units xspline draw an x spline zaxis generic function to add an axis to a plot grdevices adjustcolor adjust colors in one or more directions conveniently as graphicsannot coerce an object for graphics annotation as raster create a raster object axisticks compute pretty axis tick scales boxplot stats box plot statistics bringtotop assign focus to a window cairo cairographics based svg pdf and postscript graphics devices cairosymbolfont specify a symbol font check options set options with consistency checks chull compute convex hull of a set of points cm unit transformation col2rgb color to rgb conversion colorramp color interpolation colors color names contourlines calculate contour lines convertcolor convert between colour spaces denscols colors for smooth density plots dev control multiple devices dev2 copy graphics between multiple devices dev2bitmap graphics device for bitmap files via ghostscript devasknewpage prompt before new page dev capabilities query capabilities of the current graphics device dev capture capture device output as a raster image dev flush hold or flush output on an on screen graphics device devices list of graphical devices dev interactive is the current graphics device interactive dev size find size of device surface embedfonts embed fonts in postscript and pdf extendrange extend a numerical range by a small percentage getgraphicsevent wait for a mouse or keyboard event from a graphics window gray gray level specification gray colors gray color palette grdevices package the r graphics devices and support for colours and fonts grsoftversion report versions of graphics software hcl hcl color specification hershey hershey vector fonts in r hsv hsv color specification japanese japanese characters in r make rgb create colour spaces msgwindow manipulate a window n2mfrow compute default mfrow from number of plots nclass compute the number of classes for a histogram palette set or view the graphics palette palettes color palettes pdf pdf graphics device pdf options auxiliary function to set view defaults for arguments of pdf pictex a pictex graphics driver plotmath mathematical annotation in r postscript postscript graphics postscriptfonts postscript and pdf font families pretty date pretty breakpoints for date time classes ps options auxiliary function to set view defaults for arguments of quartz macos quartz device quartzfonts quartz fonts setup recordgraphics record graphics operations recordplot record and replay plots rgb rgb color specification rgb2hsv rgb to hsv conversion trans3d 3d to 2d transformation for perspective plots type1font type 1 and cid fonts unix png bmp jpeg png and tiff graphics devices unix saveplot save cairo x11 plot to file windows windows graphics devices windowsfonts windows fonts windows options auxiliary function to set view defaults for arguments of windows png bmp jpeg png and tiff graphics devices windows saveplot save windows plot to a file x11 x window system graphics x11 x11fonts x11 fonts xfig xfig graphics device xy coords extracting plotting structures xytable multiplicities of x y points e g for a sunflower plot xyz coords extracting plotting structures grid absolute size absolute size of a grob arrow describe arrows to add to a line calcstringmetric calculate metric information for text current viewport get the current grid viewport tree dataviewport create a viewport with scales based on data depth determine the number of levels in an object deviceloc convert viewport location to device location drawdetails customising grid drawing editdetails customising grid editing editviewport modify a viewport explode explode a path into its components gedit create and apply edit objects getnames list the names of grobs on the display list gpar handling grid graphical parameters gpath concatenate grob names grid grid graphics grid add add a grid graphical object grid bezier draw a bezier curve grid cap capture a raster image grid circle draw a circle grid clip set the clipping region grid convert convert between different grid coordinate systems grid copy make a copy of a grid graphical object grid curve draw a curve between locations grid defunct defunct functions in package grid grid delay encapsulate calculations and generating a grob grid display list control the grid display list grid dlapply modify the grid display list grid draw draw a grid grob grid edit edit the description of a grid graphical object grid force force a grob into its components grid frame create a frame for packing objects grid function draw a curve representing a function grid get get a grid graphical object grid grab grab the current grid output grid grep search for grobs grid grill draw a grill grid grob create grid g...
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