[R] R 2.0.0 is released
rongguiwong
0034058 at fudan.edu.cn
Wed Oct 6 13:44:34 CEST 2004
congratulations!
i download the software and install it.
it is pretty good.it start much more quickly than 1.9.1.
but i find a problem.
i have a data frame,the varible"PROVICE' is in Chinese,but it appears like
this:
[1] \261\261\276\251 \314\354\275\362
[3] \272\323\261\261 \311\275\316\367
[5] \304\332\303\311\271\305 \301\311\304\376
[7] \274\252\301\326 \272\332\301\372\275\255
[9] \311\317\272\243 \275\255\313\325
[11] \325\343\275\255 \260\262\273\325
[13] \270\243\275\250 \275\255\316\367
[15] \311\275\266\253 \272\323\304\317
[17] \272\376\261\261 \272\376\304\317
[19] \271\343\266\253 \271\343\316\367
[21] \272\243\304\317 \326\330\307\354
[23] \313\304\264\250 \271\363\326\335
[25] \324\306\304\317 \316\367\262\330
[27] \311\302\316\367 \270\312\313\340
[29] \307\340\272\243 \304\376\317\304
[31] \320\302\275\256
31 Levels: Éú£ ÔÆÄà ÄÚÃɹÅ ±±¾© ¼ªÃÖ ËÄ´¨ Ìì½ò ÄþÃÄ ... ºÚÃú½Â
it seems can not display chinese correctly.but in R1.9.1,it display
correctly .in R1.9.1,when i use >data$PROVICE,it display chinese directly,but
in R2.0.0,the display numbers like "\261\261\276\251 ".
is it a bug or something else?
ÔÚ 2004Äê10ÔÂ4ÈÕ ÃÇÆÚÒ» 23:29£¬Peter Dalgaard ôµÀ£º
> I've rolled up R-2.0.0.tar.gz a short while ago. This is a new version
> with a number of new features. See below for the details.
>
> As was the case with R 1.0.0, this new version represents a coming of
> age more than a radical change to R. We do plan to celebrate the new
> major version with press releases and such.
>
> The release will be available from
>
> http://cran.r-project.org/src/base/R-2/R-2.0.0.tar.gz
>
> or you might wait for it to be mirrored at a CRAN site nearer to you.
> Binaries for various platforms will appear in due course.
>
> There is also a version split for floppies.
>
>
> For the R Core Team
> Peter Dalgaard
>
>
>
>
> These are the md5sums for the freshly created files, in case you wish
> to check that they are uncorrupted:
>
> 3900bca37cabb4b76b8d736d51cc9251 R-2.0.0.tar.gz
> 4a3c7595b112d879997f7455fa8c1c0d R-2.0.0.tar.gz-split.aa
> 45d376c7c533c62c657ef0fafac8a784 R-2.0.0.tar.gz-split.ab
> 7dbdb241e1fb7263701719ea856ebe41 R-2.0.0.tar.gz-split.ac
> 1e1077f7593778b79e9b0d5c676af63b R-2.0.0.tar.gz-split.ad
> 6f4ffaa48a54e002f586f80fd4f2461c R-2.0.0.tar.gz-split.ae
> 34b62bb31f6ecf84da329d21c2a21561 R-2.0.0.tar.gz-split.af
> c880f8f06ca3fe367bba6757e9cfbf32 R-2.0.0.tar.gz-split.ag
> b1a2d17d3ae523d04ffc8d3c6db4b67b R-2.0.0.tar.gz-split.ah
>
>
> Here is the relevant part of the NEWS file
>
>
> CHANGES IN R VERSION 2.0.0
>
>
> USER-VISIBLE CHANGES
>
> o The stub packages from 1.9.x have been removed: the library()
> function selects the new home for their code.
>
> o `Lazy loading' of R code has been implemented, and is used for
> the standard and recommended packages by default. Rather than
> keep R objects in memory, they are kept in a database on disc
> and only loaded on first use. This accelerates startup (down
> to 40% of the time for 1.9.x) and reduces memory usage -- the
> latter is probably unimportant of itself, but reduces
> commensurately the time spent in garbage collection.
>
> Packages are by default installed using lazy loading if they
> have more than 25Kb of R code and did not use a saved image.
> This can be overridden by INSTALL --[no-]lazy or via a field
> in the DESCRIPTION file. Note that as with --save, any other
> packages which are required must be already installed.
>
> As the lazy-loading databases will be consulted often, R
> will be slower if run from a slow network-mounted disc.
>
> o All the datasets formerly in packages 'base' and 'stats' have
> been moved to a new package 'datasets'. data() does the
> appropriate substitution, with a warning. However, calls to
> data() are not normally needed as the data objects are visible
> in the 'datasets' package.
>
> Packages can be installed to make their data objects visible
> via R CMD INSTALL --lazy-data or via a field in the
> DESCRIPTION file.
>
> o Package 'graphics' has been split into 'grDevices' (the graphics
> devices shared between base and grid graphics) and 'graphics'
> (base graphics). Each of the 'graphics' and 'grid' packages
> load 'grDevices' when they are attached. Note that
> ps.options() has been moved to grDevices and user hooks may
> need to be updated.
>
> o The semantics of data() have changed (and were incorrectly
> documented in recent releases) and the function has been moved
> to package 'utils'. Please read the help page carefully if
> you use the 'package' or 'lib.loc' arguments.
>
> data() now lists datasets, and not just names which data() accepts.
>
> o Dataset 'phones' has been renamed to 'WorldPhones'.
>
> o Datasets 'sunspot.month' and 'sunspot.year' are available
> separately but not via data(sunspot) (which was used by package
> lattice to retrieve a dataset 'sunspot').
>
> o Packages must have been re-installed for this version, and
> library() will enforce this.
>
> o Package names must now be given exactly in library() and
> require(), regardless of whether the underlying file system is
> case-sensitive or not. So 'library(mass)' will not work, even
> on Windows.
>
> o R no longer accepts associative use of relational operators.
> That is, 3 < 2 < 1 (which used to evalute as TRUE!) now causes
> a syntax error. If this breaks existing code, just add
> parentheses -- or braces in the case of plotmath.
>
> o The R parser now allows multiline strings, without escaping
> the newlines with backslashes (the old method still works).
> Patch by Mark Bravington.
>
>
> NEW FEATURES
>
> o There is a new atomic vector type, class "raw". See ?raw for
> full details including the operators and utility functions provided.
>
> o The default barplot() method by default uses a
> gamma-corrected grey palette (rather than the heat color
> palette) for coloring its output when given a matrix.
>
> o The 'formula' method for boxplot() has a 'na.action' argument,
> defaulting to NULL. This is mainly useful if the response
> is a matrix when the previous default of 'na.omit' would omit
> entire rows. (Related to PR#6846.)
>
> boxplot() and bxp() now obey global 'par' settings and also
> allow the specification of graphical options in more detail,
> compatibly with S-PLUS (fulfilling wishlist entry PR#6832)
> thanks to contributions from Arni Magnusson. For consistency,
> 'boxwex' is not an explicit argument anymore.
>
> o chull() has been moved to package graphics (as it uses xy.coords).
>
> o There is now a coef() method for summaries of "nls" objects.
>
> o compareVersion(), packageDescription() and read.00Index()
> have been moved to package 'utils'.
>
> o convolve(), fft(), mvfft() and nextn() have been moved to
> package stats.
>
> o coplot() now makes use of cex.lab and font.lab par() settings.
>
> o cumsum/prod/max/min() now preserve names.
>
> o data(), .path.packages() and .find.packages() now interpret
> package = NULL to mean all loaded packages.
>
> o data.frame() and its replacement methods remove the names from
> vector columns. Using I() will ensure that names are
> preserved.
>
> o data.frame(check.names = TRUE) (the default) enforces unique
> names, as S does.
>
> o .Defunct() now has 'new' and 'package' arguments like those of
> .Deprecated().
>
> o The plot() method for "dendrogram" objects now respects many more
> nodePar and edgePar settings and for edge labeling computes the
> extents of the diamond more correctly.
>
> o deparse(), dput() and dump() have a new 'control' argument to
> control the level of detail when deparsing. dump() defaults to
> the most detail, the others default to less. See ?.deparseOpts
> for the details.
>
> They now evaluate promises by default: see ?dump for details.
>
> o dir.create() now expands '~' in filenames.
>
> o download.file() has a new progress meter (under Unix) if the
> length of the file is known -- it uses 50 equals signs.
>
> o dyn.load() and library.dynam() return an object describing the
> DLL that was loaded. For packages with namespaces, the DLL
> objects are stored in a list within the namespace.
>
> o New function eapply() - apply for environments. The supplied
> function is applied to each element of the environment; the order
> of application is not specified.
>
> o edit() and fix() use the object name in the window caption on
> some platforms (e.g. Windows).
>
> o Function file.edit() function added: like file.show(), but
> allows editing.
>
> o Function file.info() can return file sizes > 2G if the
> underlying OS supports such.
>
> o fisher.test(*, conf.int=FALSE) allows the confidence interval
> computation to be skipped.
>
> o formula() methods for classes "lm" and "glm" used the expanded
> formula (with '.' expanded) from the terms component.
>
> o The `formula' method for ftable() now looks for variables in the
> environment of the formula before the usual search path.
>
> o A new function getDLLRegisteredRoutines() returns information
> about the routines available from a DLL that were explicitly
> registered with R's dynamic loading facilities.
>
> o A new function getLoadedDLLs() returns information about the
> DLLs that are currently loaded within this session.
>
> o The package element returned by getNativeSymbolInfo() contains
> reference to both the internal object used to resolve symbols
> with the DLL, and the internal DllInfo structure used to
> represent the DLL within R.
>
> o help() now returns information about available documentation for
> a given topic, and notifies about multiple matches. It has a
> separate print() method.
>
> If the latex help files were not installed, help() will offer
> to create a latex file on-the-fly from the installed .Rd file.
>
> o heatmap() has a new argument 'reorderfun'.
>
> o Most versions of install.packages() have an new optional
> argument 'dependencies = TRUE' which will not only fetch the
> packages but also their uninstalled dependencies and their
> dependencies ....
>
> The Unix version of install.packages() attempts to install
> packages in an order that reflects their dependencies. (This
> is not needed for binary installs as used under Windows.)
>
> o interaction() has new argument 'sep'.
>
> o interaction.plot() allows 'type = "b"' and doesn't give spurious
> warnings when passed a matplot()-only argument such as 'main'.
>
> o is.integer() and is.numeric() always return FALSE for a
> factor. (Previously they were true and false respectively for
> well-formed factors, but it is possible to create factors
> with non-integer codes by underhand means.)
>
> o New functions is.leaf(), dendrapply() and a labels() method for
> dendrogram objects.
>
> o legend() has an argument 'pt.lwd' and setting 'density' now works
> because 'angle' now defaults to 45 (mostly contributed by Uwe Ligges).
>
> o library() now checks the version dependence (if any) of
> required packages mentioned in the Depends: field of the
> DESCRIPTION file.
>
> o load() now detects and gives a warning (rather than an error)
> for empty input, and tries to detect (but not correct) files
> which have had LF replaced by CR.
>
> o ls.str() and lsf.str() now return an object of class "ls_str" which
> has a print method.
>
> o make.names() has a new argument allow_, which if false allows
> its behaviour in R 1.8.1 to be reproduced.
>
> o The 'formula' method for mosaicplot() has a 'na.action' argument
> defaulting to 'na.omit'.
>
> o model.frame() now warns if it is given data = newdata and it
> creates a model frame with a different number of rows from
> that implied by the size of 'newdata'.
>
> Time series attributes are never copied to variables in the
> model frame unless na.action = NULL. (This was always the
> intention, but they sometimes were as the result of an earlier
> bug fix.)
>
> o There is a new 'padj' argument to mtext() and axis().
> Code patch provided by Uwe Ligges (fixes PR#1659 and PR#7188).
>
> o Function package.dependencies() has been moved to package 'tools'.
>
> o The 'formula' method for pairs() has a 'na.action' argument,
> defaulting to 'na.pass', rather than the value of
> getOption("na.action").
>
> o There are five new par() settings:
>
> 'family' can be used to specify a font family for graphics
> text. This is a device-independent family specification
> which gets mapped by the graphics device to a device-specific
> font specification (see, for example, postscriptFonts()).
> Currently, only PostScript, PDF, X11, Quartz, and Windows
> respond to this setting.
>
> 'lend', 'ljoin', and 'lmitre' control the cap style and
> join style for drawing lines (only noticeable on thick lines
> or borders). Currently, only PostScript, PDF, X11, and Quartz
> respond to these settings.
>
> 'lheight' is a multiplier used in determining the vertical
> spacing of multi-line text.
>
> All of these settings are currently only available via par()
> (i.e., not in-line as arguments to plot(), lines(), ...)
>
> o PCRE (as used by grep etc) has been updated to version 5.0.
>
> o A 'version' argument has been added to pdf() device. If this is
> set to "1.4", the device will support transparent colours.
>
> o plot.xy(), the workhorse function of points(), lines() and
> plot.default() now has 'lwd' as explicit argument instead of
> implicitly in '...', and now recycles lwd where it makes
> sense, i.e. for line-based plot symbols.
>
> o The png() and jpeg() devices (and the bmp() device under Windows)
> now allow a nominal resolution to be recorded in the file.
>
> o New functions to control mapping from device-independent
> graphics font family to device-specific family:
> postscriptFont() and postscriptFonts() (for both postscript()
> and pdf()); X11Font() and X11Fonts(); windowsFont() and
> windowsFonts(); quartzFont() and quartzFonts().
>
> o power (x^y) has optimised code for y == 2.
>
> o prcomp() is now generic, with a formula method (based on an
> idea of Jari Oksanen).
>
> prcomp() now has a simple predict() method.
>
> o printCoefmat() has a new logical argument 'signif.legend'.
>
> o quantile() has the option of several methods described in
> Hyndman & Fan (1996). (Contributed by Rob Hyndman.)
>
> o rank() has two new 'ties.method's, "min" and "max".
>
> o New function read.fortran() reads Fortran-style fixed-format
> specifications.
>
> o read.fwf() reads multiline records, is faster for large files.
>
> o read.table() now accepts "NULL", "factor", "Date" and
> "POSIXct" as possible values of colClasses, and colClasses can
> be a named character vector.
>
> o readChar() can now read strings with embedded nuls.
>
> o The "dendrogram" method for reorder() now has a 'agglo.FUN'
> argument for specification of a weights agglomeration
> function.
>
> o New reorder() method for factors, slightly extending that in
> lattice. Contributed by Deepayan Sarkar.
>
> o Replaying a plot (with replayPlot() or via autoprinting) now
> automagically opens a device if none is open.
>
> o replayPlot() issues a warning if an attempt is made to replay
> a plot that was recorded using a different R version (the
> format for recorded plots is not guaranteed to be stable
> across different R versions). The Windows-menu equivalent
> (History...Get from variable) issues a similar warning.
>
> o reshape() can handle multiple 'id' variables.
>
> o It is now possible to specify colours with a full alpha
> transparency channel via the new 'alpha' argument to the
> rgb() and hsv() functions, or as a string of the form "#RRGGBBAA".
>
> NOTE: most devices draw nothing if a colour is not opaque,
> but PDF and Quartz devices will render semitransparent colours.
>
> A new argument 'alpha' to the function col2rgb()
> provides the ability to return the alpha component of
> colours (as well as the red, green, and blue components).
>
> o save() now checks that a binary connection is used.
>
> o seek() on connections now accepts and returns a double for the
> file position. This allows >2Gb files to be handled on a
> 64-bit platform (and some 32-bit platforms).
>
> o source() with 'echo = TRUE' uses the function source attribute
> when displaying commands as they are parsed.
>
> o setClass() and its utilities now warn if either superclasses
> or classes for slots are undefined. (Use setOldClass to
> register S3 classes for use as slots)
>
> o str(obj) now displays more reasonably the STRucture of S4 objects.
>
> It is also improved for language objects and lists with promise
> components.
>
> The method for class "dendrogram" has a new argument 'stem' and
> indicates when it's not printing all levels (as typically when
> e.g., 'max.level = 2').
>
> Specifying 'max.level = 0' now allows to suppress all but the top
> level for hierarchical objects such as lists. This is different
> to previous behavior which was the default behavior of giving all
> levels is unchanged. The default behavior is unchanged but now
> specified by 'max.level = NA'.
>
> o system.time() has a new argument 'gcFirst' which, when TRUE,
> forces a garbage collection before timing begins.
>
> o tail() of a matrix now displays the original row numbers.
>
> o The default method for text() now coerces a factor to character
> and not to its internal codes. This is incompatible with S
> but seems what users would expect.
>
> It now also recycles (x,y) to the length of 'labels' if that
> is longer. This is now compatible with grid.text() and
> S. (See also PR#7084.)
>
> o TukeyHSD() now labels comparisons when applied to an
> interaction in an aov() fit. It detects non-factor terms in
> 'which' and drops them if sensible to do so.
>
> o There is now a replacement method for window(), to allow a
> range of values of time series to be replaced by specifying the
> start and end times (and optionally a frequency).
>
> o If writeLines() is given a connection that is not open, it now
> attempts to open it in mode = "wt" rather than the default
> mode specified when creating the connection.
>
> o The screen devices x11(), windows() and quartz() have a new
> argument 'bg' to set the default background colour.
>
>
> o Subassignments involving NAs and with a replacement value of
> length > 1 are now disallowed. (They were handled
> inconsistently in R < 2.0.0, see PR#7210.) For data frames
> they are disallowed altogether, even for logical matrix indices
> (the only case which used to work).
>
> o The way the comparison operators handle a list argument has
> been rationalized so a few more cases will now work -- see
> ?Comparison.
>
> o Indexing a vector by a character vector was slow if both the
> vector and index were long (say 10,000). Now hashing is used
> and the time should be linear in the longer of the lengths
> (but more memory is used).
>
> o Printing a character string with embedded nuls now prints the
> whole string, and non-printable characters are represented by
> octal escape sequences.
>
> o Objects created from a formally defined class now include the
> name of the corresponding package as an attribute in the
> object's class. This allows packages with namespaces to have
> private (non-exported) classes.
>
> o Changes to package 'grid':
>
> - Calculation of number of circles to draw in circleGrob now
> looks at length of y and r as well as length of x.
>
> - Calculation of number of rectangles to draw in rectGrob now
> looks at length of y, w, and h as well as length of x.
>
> - All primitives (rectangles, lines, text, ...) now handle
> non-finite values (NA, Inf, -Inf, NaN) for locations and
> sizes.
>
> Non-finite values for locations, sizes, and scales of
> viewports result in error messages.
>
> There is a new vignette ("nonfinite") which describes this
> new behaviour.
>
> - Fixed (unreported) bug in drawing circles. Now checks that
> radius is non-negative.
>
> - downViewport() now reports the depth it went down to find a
> viewport. Handy for "going back" to where you started, e.g., ...
>
> depth <- downViewport("vpname")
> <draw stuff>
> upViewport(depth)
>
> - The "alpha" gpar() is now combined with the alpha channel of
> colours when creating a gcontext as follows: (internal C code)
>
> finalAlpha = gpar("alpha")*(R_ALPHA(col)/255)
>
> This means that gpar(alpha=) settings now affect internal
> colours so grid alpha transparency settings now are sent to
> graphics devices.
>
> The alpha setting is also cumulative. For example, ...
>
> grid.rect(width=0.5, height=0.5,
> gp=gpar(fill="blue")) # alpha = 1
> pushViewport(viewport(gp=gpar(alpha=0.5)))
> grid.rect(height=0.25, gp=gpar(fill="red")) # alpha = 0.5
> pushViewport(viewport(gp=gpar(alpha=0.5)))
> grid.rect(width=0.25, gp=gpar(fill="red")) # alpha = 0.25 !
>
> - Editing a gp slot in a grob is now incremental. For example ...
>
> grid.lines(name="line")
> grid.edit("line", gp=gpar(col="red")) # line turns red
> grid.edit("line", gp=gpar(lwd=3)) # line becomes thick
> # AND STAYS red
>
> - The "cex" gpar is now cumulative. For example ...
>
> grid.rect(height=unit(4, "char")) # cex = 1
> pushViewport(viewport(gp=gpar(cex=0.5)))
> grid.rect(height=unit(4, "char")) # cex = 0.5
> pushViewport(viewport(gp=gpar(cex=0.5)))
> grid.rect(height=unit(4, "char")) # cex = 0.125 !!!
>
> - New childNames() function to list the names of children
> of a gTree.
>
> - The "grep" and "global" arguments have been implemented for
> grid.[add|edit|get|remove]Grob() functions.
>
> The "grep" argument has also been implemented for the
> grid.set() and setGrob().
>
> - New function grid.grab() which creates a gTree from the
> current display list (i.e., the current page of output can
> be converted into a single gTree object with all grobs
> on the current page as children of the gTree and all the
> viewports used in drawing the current page in the childrenvp
> slot of the gTree).
>
> - New "lineend", "linejoin", and "linemitre" gpar()s:
>
> line end can be "round", "butt", or "square".
> line join can be "round", "mitre", or "bevel".
> line mitre can be any number larger than 1
> (controls when a mitre join gets turned into a bevel join;
> proportional to angle between lines at join;
> very big number means that conversion only happens for lines
> that are almost parallel at join).
>
> - New grid.prompt() function for controlling whether the user is
> prompted before starting a new page of output.
>
> Grid no longer responds to the par(ask) setting in the "graphics"
> package.
>
> o The tcltk package has had the tkcmd() function renamed as
> tcl() since it could be used to invoke commands that had
> nothing to do with Tk. The old name is retained, but will be
> deprecated in a future release. Similarly, we now have
> tclopen(), tclclose(), tclread(), tclputs(), tclfile.tail(),
> and tclfile.dir() replacing counterparts starting with "tk",
> with old names retained for now.
>
>
> UTILITIES
>
> o R CMD check now checks for file names in a directory that
> differ only by case.
>
> o R CMD check now checks Rd files using R code from package tools,
> and gives refined diagnostics about "likely" Rd problems (stray
> top-level text which is silently discarded by Rdconv).
>
> o R CMD INSTALL now fails for packages with incomplete/invalid
> DESCRIPTION metadata, using new code from package tools which is
> also used by R CMD check.
>
> o list_files_with_exts (package tools) now handles zipped directories.
>
> o Package 'tools' now provides Rd_parse(), a simple top-level
> parser/analyzer for R documentation format.
>
> o tools::codoc() (and hence R CMD check) now checks any documentation
> for registered S3 methods and unexported objects in packages
> with namespaces.
>
> o Package 'utils' contains several new functions:
>
> - Generics toBibtex() and toLatex() for converting
> R objects to BibTeX and LaTeX (but almost no methods yet).
>
> - A much improved citation() function which also has a package
> argument. By default the citation is auto-generated from
> the package DESCRIPTION, the file 'inst/CITATION' can be
> used to override this, see help(citation) and
> help(citEntry).
>
> - sessionInfo() can be used to include version information about
> R and R packages in text or LaTeX documents.
>
>
> DOCUMENTATION
>
> o The DVI and PDF manuals are now all made on the paper specified
> by R_PAPERSIZE (default 'a4'), even the .texi manuals which
> were made on US letter paper in previous versions.
>
> o The reference manual now omits 'internal' help pages.
>
> o There is a new help page shown by help("Memory-limits") which
> documents the current design limitations on large objects.
>
> o The format of the LaTeX version of the documentation has
> changed. The old format is still accepted, but only the new
> resolves cross-references to object names containing _, for
> example.
>
> o HTML help pages now contain a reference to the package and
> version in the footer, and HTML package index pages give their
> name and version at the top.
>
> o All manuals in the 2.x series have new ISBN numbers.
>
> o The 'R Data Import/Export' manual has been revised and has a
> new chapter on `Reading Excel spreadsheets'.
>
>
> C-LEVEL FACILITIES
>
> o The PACKAGE argument for .C/.Call/.Fortran/.External can be
> omitted if the call is within code within a package with a
> namespace. This ensures that the native routine being called
> is found in the DLL of the correct version of the package if
> multiple versions of a package are loaded in the R session.
> Using a namespace and omitting the PACKAGE argument is
> currently the only way to ensure that the correct version is
> used.
>
> o The header Rmath.h contains a definition for R_VERSION_STRING
> which can be used to track different versions of R and libRmath.
>
> o The Makefile in src/nmath/standalone now has 'install' and
> 'uninstall' targets -- see the README file in that directory.
>
> o More of the header files, including Rinternals.h, Rdefines.h and
> Rversion.h, are now suitable for calling directly from C++.
>
> o Configure looks to a suitable option for inlining C code which
> made available as macro R_INLINE: see `Writing R Extensions'
> for further details.
>
>
> DEPRECATED & DEFUNCT
>
> o Direct use of R INSTALL|REMOVE|BATCH|COMPILE|SHLIB has been
> removed: use R CMD instead.
>
> o La.eigen(), tetragamma(), pentagamma(), package.contents() and
> package.description() are defunct.
>
> o The undocumented function newestVersion() is no longer exported
> from package utils. (Mainly because it was not completely general.)
>
> o C-level entry point ptr_R_GetX11Image has been removed, as it
> was replaced by R_GetX11Image at 1.7.0.
>
> o The undocumented C-level entry point R_IsNaNorNA has been
> removed. It was used in a couple of packages, and should be
> replaced by a call to the documented macro ISNAN.
>
> o The gnome/GNOME graphics device is now defunct.
>
>
> INSTALLATION CHANGES
>
> o Arithmetic supporting +/-Inf, NaNs and the IEC 60559 (aka
> IEEE 754) standard is now required -- the partial and often
> untested support for more limited arithmetic has been removed.
>
> The C99 macro isfinite is used in preference to finite if available
> (and its correct functioning is checked at configure time).
>
> Where isfinite or finite is available and works, it is used as
> the substitution value for R_FINITE. On some platforms this
> leads to a performance gain. (This applies to compiled code
> in packages only for isfinite.)
>
> o The dynamic libraries libR and libRlapack are now installed in
> R_HOME/lib rather than R_HOME/bin.
>
> o When --enable-R-shlib is specified, the R executable is now a
> small executable linked against libR: see the R-admin manual
> for further discussion. The 'extra' libraries bzip2, pcre,
> xdr and zlib are now compiled in a way that allows the code to
> be included in a shared library only if this option is
> specified, which might improve performance when it is not.
>
> o The main R executable is now R_HOME/exec/R not R_HOME/R.bin, to
> ease issues on MacOS X. (The location is needed when debugging
> core dumps, on other platforms.)
>
> o Configure now tests for 'inline' and alternatives, and the
> src/extra/bzip2 code now (potentially) uses inlining where
> available and not just under gcc.
>
> o The XPG4 sed is used on Solaris for forming dependencies,
> which should now be done correctly.
>
> o Makeinfo 4.5 or later is now required for building the HTML and
> Info versions of the manuals. However, binary distributions
> need to be made with 4.7 or later to ensure some of the
> links are correct.
>
> o f2c is not allowed on 64-bit platforms, as it uses longs for
> Fortran integers.
>
> o There are new options on how to make the PDF version of the
> reference manual -- see the 'R Administration and Installation
> Manual' section 2.2.
>
> o The concatenated Rd files in the installed 'man' directory are
> now compressed and the R CMD check routines can read the
> compressed files.
>
> o There is a new configure option --enable-linux-lfs that will
> build R with support for > 2Gb files on suitably recent 32-bit
> Linux systems.
>
>
> PACKAGE INSTALLATION CHANGES
>
> o The DESCRIPTION file of packages may contain a 'Imports:'
> field for packages whose namespaces are used but do not need
> to be attached. Such packages should no longer be listed in
> 'Depends:'.
>
> o There are new optional fields 'SaveImage', 'LazyLoad' and
> 'LazyData' in the DESCRIPTION file. Using 'SaveImage' is
> preferred to using an empty file 'install.R'.
>
> o A package can contain a file 'R/sysdata.rda' to contain
> system datasets to be lazy-loaded into the namespace/package
> environment.
>
> o The packages listed in 'Depends' are now loaded before a package
> is loaded (or its image is saved or it is prepared for lazy
> loading). This means that almost all uses of R_PROFILE.R and
> install.R are now unnecessary.
>
> o If installation of any package in a bundle fails, R CMD
> INSTALL will back out the installation of all of the bundle,
> not just the failed package (on both Unix and Windows).
>
>
> BUG FIXES
>
> o Complex superassignments were wrong when a variable with the same
> name existed locally, and were not documented in R-lang.
>
> o rbind.data.frame() dropped names/rownames from columns in all
> but the first data frame.
>
> o The dimnames<- method for data.frames was not checking the
> validity of the row names.
>
> o Various memory leaks reported by valgrind have been plugged.
>
> o gzcon() connections would sometimes read the crc bytes from
> the wrong place, possibly uninitialized memory.
>
> o Rd.sty contained a length \middle that was not needed after a
> revision in July 2000. It caused problems with LaTeX systems
> based on e-TeX which are starting to appear.
>
> o save() to a connection did not check that the connection was
> open for writing, nor that non-ascii saves cannot be made to a
> text-mode connection.
>
> o phyper() uses a new algorithm based on Morten Welinder's bug
> report (PR#6772). This leads to faster code for large arguments
> and more precise code, e.g. for phyper(59, 150,150, 60, lower=FALSE).
> This also fixes bug (PR#7064) about fisher.test().
>
> o print.default(*, gap = <n>) now in principle accepts all
> non-negative values <n>.
>
> o smooth.spline(...)$pen.crit had a typo in its computation;
> note this was printed in print.smooth.spline(*) but not used in
> other "smooth.spline" methods.
>
> o write.table() handles zero-row and zero-column inputs correctly.
>
> o debug() works on trivial functions instead of crashing. (PR#6804)
>
> o eval() could alter a data.frame/list second argument, so
> with(trees, Girth[1] <- NA) altered 'trees' (and any copy of
> 'trees' too).
>
> o cor() could corrupt memory when the standard deviation was
> zero. (PR#7037)
>
> o inverse.gaussian() always printed 1/mu^2 as the link function.
>
> o constrOptim() now passes ... arguments through optim to the
> objective function.
>
> o object.size() now has a better estimate for character vectors:
> it was in general too low (but only significantly so for
> very short character strings) but over-estimated NA and
> duplicated elements.
>
> o quantile() now interpolates correctly between finite and
> infinite values (giving +/-Inf rather than NaN).
>
> o library() now gives more informative error messages mentioning
> the package being loaded.
>
> o Building the reference manual no longer uses roman upright
> quotes in typewriter output.
>
> o model.frame() no longer builds invalid data frames if the
> data contains time series and rows are omitted by na.action.
>
> o write.table() did not escape quotes in column names. (PR#7171)
>
> o Range checks missing in recursive assignments using [[ ]]. (PR#7196)
>
> o packageStatus() reported partially-installed bundles as
> installed.
>
> o apply() failed on an array of dimension >=3 when for each
> iteration the function returns a named vector of length >=2.
> (PR#7205)
>
> o The GNOME interface was in some circumstances failing if run
> from a menu -- it needed to always specify that R be interactive.
>
> o depMtrxToStrings (part of pkgDepends) applied nrow() to a
> non-matrix and aborted on the result.
>
> o Fix some issues with nonsyntactical names in modelling code
> (PR#7202), relating to backquoting. There are likely more.
>
> o Support for S4 classes that extend basic classes has been fixed
> in several ways. as() methods and x at .Data should work better.
>
> o hist() and pretty() accept (and ignore) infinite values. (PR#7220)
>
> o It is no longer possible to call gzcon() more than once on a
> connection.
>
> o t.test() now detects nearly-constant input data. (PR#7225)
>
> o mle() had problems if ndeps or parscale was supplied in the
> control arguments for optim(). Also, the profiler is now more
> careful to reevaluate modified mle() calls in its parent
> environment.
>
> o Fix to rendering of accented superscripts and subscripts e.g.,
> expression((b[dot(a)])). (Patch from Uwe Ligges.)
>
> o attach(*, pos=1) now gives a warning (and will give an error).
>
> o power.*test() now gives an error when 'sig.level' is outside [0,1].
> (PR#7245)
>
> o Fitting a binomial glm with a matrix response lost the names of
> the response, which should have been transferred to the
> residuals and fitted values.
>
> o print.ts() could get the year wrong because rounding issue
> (PR#7255)
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