latex converts its argument to a .tex file appropriate
for inclusion in a LaTeX2e document. latex is a generic
function that calls one of latex.default,
latex.function, latex.list.
latex.default
does appropriate rounding and decimal alignment and produces a
file containing a LaTeX tabular environment to print the matrix or data.frame
x as a table.
latex.function prepares an S function for printing by issuing sed
commands that are similar to those in the
S.to.latex procedure in the s.to.latex package (Chambers
and Hastie, 1993). latex.function can also produce
verbatim output or output that works with the Sweavel
LaTeX style at http://biostat.mc.vanderbilt.edu/SweaveTemplate.
latex.list calls latex recursively for each element in the argument.
latexTranslate translates particular items in character
strings to LaTeX format, e.g., makes a^2 = a\$^2\$ for superscript within
variable labels. LaTeX names of greek letters (e.g., "alpha")
will have backslashes added if greek==TRUE. Math mode is
inserted as needed.
latexTranslate assumes that input text always has matches,
e.g. [) [] (] (), and that surrounding by \$\$ is OK.
htmlTranslate is similar to latexTranslate but for html
translation. It doesn't need math mode and assumes dollar signs are
just that.
latexSN converts a vector floating point numbers to character
strings using LaTeX exponents. Dollar signs to enter math mode are not
added. Similarly, htmlSN converts to scientific notation in html.
latexVerbatim on an object executes the object's print method,
capturing the output for a file inside a LaTeX verbatim environment.
dvi uses the system latex command to compile LaTeX code produced
by latex, including any needed styles. dvi
will put a \documentclass{report} and \end{document} wrapper
around a file produced by latex. By default, the geometry LaTeX package is
used to omit all margins and to set the paper size to a default of
5.5in wide by 7in tall. The result of dvi is a .dvi file. To both
format and screen display a non-default size, use for example
print(dvi(latex(x), width=3, height=4),width=3,height=4). Note that
you can use something like xdvi -geometry 460x650 -margins 2.25in
file without changing LaTeX defaults to emulate this.
dvips will use the system dvips command to print the .dvi file to
the default system printer, or create a postscript file if file
is specified.
dvigv uses the system dvips command to convert the input object
to a .dvi file, and uses the system dvips command to convert it to
postscript. Then the postscript file is displayed using Ghostview
(assumed to be the system command gv).
There are show methods for displaying typeset LaTeX
on the screen using the system xdvi
command. If you show a LaTeX file created by
latex without running it through dvi using
show.dvi(object), the
show method will run it through dvi automatically.
These show
methods are not S Version 4 methods so you have to use full names such
as show.dvi and show.latex. Use the print methods for
more automatic display of typesetting, e.g. typing latex(x) will
invoke xdvi to view the typeset document.
latex(object, …)# S3 method for default
latex(object,
title=first.word(deparse(substitute(object))),
file=paste(title, ".tex", sep=""),
append=FALSE, label=title,
rowlabel=title, rowlabel.just="l",
cgroup=NULL, n.cgroup=NULL,
rgroup=NULL, n.rgroup=NULL,
cgroupTexCmd="bfseries",
rgroupTexCmd="bfseries",
rownamesTexCmd=NULL,
colnamesTexCmd=NULL,
cellTexCmds=NULL,
rowname, cgroup.just=rep("c",length(n.cgroup)),
colheads=NULL,
extracolheads=NULL, extracolsize='scriptsize',
dcolumn=FALSE, numeric.dollar=!dcolumn, cdot=FALSE,
longtable=FALSE, draft.longtable=TRUE, ctable=FALSE, booktabs=FALSE,
table.env=TRUE, here=FALSE, lines.page=40,
caption=NULL, caption.lot=NULL, caption.loc=c('top','bottom'),
star=FALSE,
double.slash=FALSE,
vbar=FALSE, collabel.just=rep("c",nc), na.blank=TRUE,
insert.bottom=NULL, insert.bottom.width=NULL,
insert.top=NULL,
first.hline.double=!(booktabs | ctable),
where='!tbp', size=NULL,
center=c('center','centering','centerline','none'),
landscape=FALSE,
multicol=TRUE,
math.row.names=FALSE, already.math.row.names=FALSE,
math.col.names=FALSE, already.math.col.names=FALSE,
hyperref=NULL, continued='continued',
…) # x is a matrix or data.frame
# S3 method for function
latex(
object,
title=first.word(deparse(substitute(object))),
file=paste(title, ".tex", sep=""),
append=FALSE,
assignment=TRUE, type=c('example','verbatim','Sinput'),
width.cutoff=70, size='', …)
# S3 method for list
latex(
object,
title=first.word(deparse(substitute(object))),
file=paste(title, ".tex", sep=""),
append=FALSE,
label,
caption,
caption.lot,
caption.loc=c('top','bottom'),
…)
# S3 method for latex
print(x, …)
latexTranslate(object, inn=NULL, out=NULL, pb=FALSE, greek=FALSE, na='',
…)
htmlTranslate(object, inn=NULL, out=NULL, greek=FALSE, na='',
code=htmlSpecialType(), …)
latexSN(x)
htmlSN(x, pretty=TRUE, …)
latexVerbatim(x, title=first.word(deparse(substitute(x))),
file=paste(title, ".tex", sep=""),
append=FALSE, size=NULL, hspace=NULL,
width=.Options$width, length=.Options$length, …)
dvi(object, …)
# S3 method for latex
dvi(object, prlog=FALSE, nomargins=TRUE, width=5.5, height=7, …)
# S3 method for dvi
print(x, …)
dvips(object, …)
# S3 method for latex
dvips(object, …)
# S3 method for dvi
dvips(object, file, …)
# S3 method for latex
show(object) # or show.dvi(object) or just object
dvigv(object, …)
# S3 method for latex
dvigv(object, …) # or gvdvi(dvi(object))
# S3 method for dvi
dvigv(object, …)
For latex, any S object. For dvi or dvigv, an object
created by latex. For latexTranslate is a vector of
character strings to translate. Any NAs are set to blank
strings before conversion.
any object to be printed verbatim for latexVerbatim. For
latexSN or htmlSN, x is a numeric vector.
name of file to create without the .tex extension. If this
option is not set, value/string of x (see above) is printed
in the top left corner of the table. Set title='' to
suppress this output.
name of the file to create. The default file name is x.tex where
x is the first word in the name of the argument for x.
Set file="" to have the generated LaTeX code just printed to
standard output. This is especially useful when running under Sweave in
R using its results=tex tag, to save having to manage many
small external files. When file="", latex keeps track of
LaTeX styles that are called for by creating or modifying an object
latexStyles (in .GlobalTemp in R or in frame 0 in
S-Plus). latexStyles is a vector containing the base names of
all the unique LaTeX styles called for so far in the current session.
See the end of the examples section for a way to use this object to good
effect. For dvips, file is the name of an output
postscript file.
defaults to FALSE. Set to TRUE to append output to an existing file.
a text string representing a symbolic label for the table for referencing
in the LaTeX \label and \ref commands.
label is only used if caption is given.
If x has row dimnames, rowlabel is a character string containing the
column heading for the row dimnames. The default is the name of the
argument for x.
If x has row dimnames, specifies the justification for printing them.
Possible values are "l", "r", "c". The heading (rowlabel) itself
is left justified if rowlabel.just="l", otherwise it is centered.
a vector of character strings defining major column headings. The default is to have none.
a vector containing the number of columns for which each element in
cgroup is a heading. For example, specify cgroup=c("Major 1","Major 2"),
n.cgroup=c(3,3) if "Major 1" is to span columns 1-3 and "Major 2" is
to span columns 4-6. rowlabel does not count in the column numbers.
You can omit n.cgroup if all groups have the same number of columns.
a vector of character strings containing headings for row groups.
n.rgroup must be present when rgroup is given. The first n.rgroup[1]
rows are sectioned off and rgroup[1] is used as a bold heading for
them. The usual row dimnames (which must be present if rgroup is) are
indented. The next n.rgroup[2] rows are treated likewise, etc.
integer vector giving the number of rows in each grouping. If rgroup
is not specified, n.rgroup is just used to divide off blocks of
rows by horizontal lines. If rgroup is given but n.rgroup is omitted,
n.rgroup will default so that each row group contains the same number
of rows.
A character string specifying a LaTeX command to be
used to format column group labels. The default, "bfseries", sets
the current font to ‘bold’. It is possible to supply a vector of
strings so that each column group label is formatted differently.
Please note that the first item of the vector is used to format the
title (even if a title is not used). Currently the user needs to handle
these issue. Multiple effects can be achieved by creating custom
LaTeX commands; for example,
"\providecommand{\redscshape}{\color{red}\scshape}" creates a
LaTeX command called \redscshape that formats the text in red
small-caps.
A character string specifying a LaTeX command to be
used to format row group labels. The default, "bfseries", sets the
current font to ‘bold’. A vector of strings can be supplied to
format each row group label differently. Normal recycling applies
if the vector is shorter than n.rgroups. See also
cgroupTexCmd above regarding multiple effects.
A character string specifying a LaTeX
command to be used to format rownames. The default, NULL, applies no
command. A vector of different commands can also be supplied.
See also cgroupTexCmd above regarding multiple effects.
A character string specifying a LaTeX command to be
used to format column labels. The default, NULL, applies no command.
It is possible to supply a vector of strings to format each column
label differently. If column groups are not used, the first item in
the vector will be used to format the title. Please note that if
column groups are used the first item of cgroupTexCmd and not
colnamesTexCmd is used to format the title. The user needs to allow for
these issues when supplying a vector of commands. See also
cgroupTexCmd above regarding multiple effects.
A matrix of character strings which are LaTeX
commands to be
used to format each element, or cell, of the object. The matrix
must have the same NROW() and NCOL() as the object. The default,
NULL, applies no formats. Empty strings also apply no formats, and
one way to start might be to create a matrix of empty strings with
matrix(rep("", NROW(x) * NCOL(x)), nrow=NROW(x)) and then
selectively change appropriate elements of the matrix. Note that
you might need to set numeric.dollar=FALSE (to disable math
mode) for some effects to work. See also cgroupTexCmd above
regarding multiple effects.
Set to TRUE to use blanks rather than NA for missing values.
This usually looks better in latex.
an optional character string to typeset at the bottom of the table.
For "ctable" style tables, this is placed in an unmarked footnote.
character string; a tex width controlling the width of the
insert.bottom text. Currently only does something with using
longtable=TRUE.
a character string to insert as a heading right
before beginning tabular environment. Useful for multiple
sub-tables.
set to FALSE to use single horizontal rules for styles other than
"bookmark" or "ctable"
rownames for tabular environment. Default is rownames of matrix or
data.frame. Specify rowname=NULL to suppress the use of row names.
justification for labels for column groups. Defaults to "c".
a character vector of column headings if you don't want
to use dimnames(object)[[2]]. Specify colheads=FALSE to
suppress column headings.
an optional vector of extra column headings that will appear under the
main headings (e.g., sample sizes). This character vector does not
need to include an empty space for any rowname in effect, as
this will be added automatically. You can also form subheadings by
splitting character strings defining the column headings using the
usual backslash n newline character.
size for extracolheads or for any second lines in column names;
default is "scriptsize"
see format.df
logical, default !dcolumn. Set to TRUE to place dollar
signs around numeric values when dcolumn=FALSE. This
assures that latex will use minus signs rather than hyphens to indicate
negative numbers. Set to FALSE when dcolumn=TRUE, as
dcolumn.sty automatically uses minus signs.
logical, set true to place dollar signs around the row names.
set to TRUE to prevent any math
mode changes to row names
logical, set true to place dollar signs around the column names.
set to TRUE to prevent any math
mode changes to column names
if table.env=TRUE is a character string used to
generate a LaTeX hyperref enclosure
a character string used to indicate pages after the first when making a long table
see format.df
Set to TRUE to use David Carlisle's LaTeX longtable style, allowing
long tables to be split over multiple pages with headers repeated on
each page.
The "style" element is set to "longtable". The latex \usepackage
must reference [longtable].
The file longtable.sty will
need to be in a directory in your TEXINPUTS path.
I forgot what this does.
set to TRUE to use Wybo Dekker's ctable style from
CTAN. Even though for historical reasons it is not the
default, it is generally the preferred method. Thicker but not
doubled \hlines are used to start a table when ctable is
in effect.
set booktabs=TRUE to use the booktabs style of horizontal
rules for better tables. In this case, double \hlines are not
used to start a table.
Set table.env=FALSE to suppress enclosing the table in a LaTeX
table environment. table.env only applies when
longtable=FALSE. You may not specify a caption if
table.env=FALSE.
Set to TRUE if you are using table.env=TRUE with longtable=FALSE and you
have installed David Carlisle's here.sty LaTeX style. This will cause
the LaTeX table environment to be set up with option H to guarantee
that the table will appear exactly where you think it will in the text.
The "style" element is set to "here". The latex \usepackage
must reference [here]. The file here.sty will
need to be in a directory in your TEXINPUTS path. here is
largely obsolete with LaTeX2e.
Applies if longtable=TRUE. No more than lines.page lines in the body
of a table will be placed on a single page. Page breaks will only
occur at rgroup boundaries.
a text string to use as a caption to print at the top of the first page of the table. Default is no caption.
a text string representing a short caption to be used in the “List of Tables”.
By default, LaTeX will use caption. If you get inexplicable latex errors,
you may need to supply caption.lot to make the errors go away.
set to "bottom" to position a caption below
the table instead of the default of "top".
apply the star option for ctables to allow a table to spread over two columns when in twocolumn mode.
set to TRUE to output "\" as "\\" in LaTeX commands. Useful when you
are reading the output file back into an S vector for later output.
logical. When vbar==TRUE, columns in the tabular environment are separated with
vertical bar characters. When vbar==FALSE, columns are separated with white
space. The default, vbar==FALSE, produces tables consistent with the style sheet
for the Journal of the American Statistical Association.
justification for column labels.
logical. When TRUE, the default, the name of the function
and the assignment arrow are printed to the file.
specifies placement of floats if a table environment is used. Default
is "!tbp". To allow tables to appear in the middle of a page of
text you might specify where="!htbp" to latex.default.
size of table text if a size change is needed (default is no change).
For example you might specify size="small" to use LaTeX font size
“small”. For latex.function is a character string
that will be appended to "Sinput" such as "small".
default is "center" to enclose the table in a center
environment. Use center="centering" or "centerline"
to instead use LaTeX
centering or centerline directives, or
center="none" to use no
centering. centerline can be useful when objects besides a
tabular are enclosed in a single table environment.
This option was implemented by Markus J<e4>ntti
markus.jantti@iki.fi of Abo Akademi University.
set to TRUE to enclose the table in a landscape
environment. When ctable is TRUE, will use the
rotate argument to ctable.
The default uses the S alltt environment for latex.function,
Set type="verbatim" to instead use the LaTeX verbatim
environment. Use type="Sinput" if using Sweave,
especially if you have customized the Sinput environment, for
example using the Sweavel style which uses the
listings LaTeX package.
width of function text output in columns; see
deparse
other arguments are accepted and ignored except that latex
passes arguments to format.df (e.g., col.just and other
formatting options like dec, rdec, and cdec). For
latexVerbatim these arguments are passed to the print
function. Ignored for latexTranslate and
htmlTranslate. For htmlSN, these arguments are passed
to prettyNum or format.
specify additional input and translated strings over the usual defaults
If pb=TRUE, latexTranslate also translates [()]
to math mode using \left, \right.
set to TRUE to have latexTranslate put names
for greek letters in math mode and add backslashes. For
htmlTranslate, translates greek letters to corresponding html
characters, ignoring "modes".
single character string to translate NA values to for
latexTranslate and htmlTranslate
set to 'unicode' to use HTML unicode characters
or '&' to use the ampersand pound number format
set to FALSE to have htmlSN use
format instead of prettyNum
horizontal space, e.g., extra left margin for verbatim text. Default
is none. Use e.g. hspace="10ex" to add 10 extra spaces to the left
of the text.
for S-Plus only; is the length of the output page for printing and capturing verbatim text
are the options( ) to have in effect only for when print is
executed. Defaults are current options. For dvi these specify
the paper width and height in inches if nomargins=TRUE, with
defaults of 5.5 and 7, respectively.
set to TRUE to have dvi print, to the S-Plus session, the LaTeX .log
file.
set to FALSE to not use \multicolumn in header
of table
set to FALSE to use default LaTeX margins when making the .dvi file
latex and dvi return a
list of class latex or dvi containing character string
elements file and style. file contains the name of the
generated file, and style is a vector (possibly empty) of styles to
be included using the LaTeX2e \usepackage command.
latexTranslate returns a vector of character strings
creates various system files and runs various Linux/UNIX system commands which are assumed to be in the system path.
latex.default outputs a LaTeX comment containing the calling
statement. To suppress outputting this comment, run
options(omitlatexcom=TRUE) before running. This is helpful
when running RMarkdown to produce pdf output using LaTeX, as this uses
pandoc which is fooled into try to escape the percent
comment symbol.
If running under Windows and using MikTeX, latex and yap
must be in your system path, and yap is used to browse
.dvi files created by latex. You should install the
geometry.sty and ctable.sty styles in MikTeX to make optimum use
of latex().
On Mac OS X, you may have to append the /usr/texbin directory to the
system path. Thanks to Kevin Thorpe
(kevin.thorpe@utoronto.ca) one way to set up Mac OS X is
to install X11 and X11SDK if not already installed,
start X11 within the R GUI, and issue the command
Sys.setenv( PATH=paste(Sys.getenv("PATH"),"/usr/texbin",sep=":")
). To avoid any complications of using X11 under MacOS, users
can install the TeXShop package, which will associate
.dvi files with a viewer that displays a pdf version of
the file after a hidden conversion from dvi to pdf.
System options can be used to specify external commands to be used.
Defaults are given by options(xdvicmd='xdvi') or
options(xdvicmd='yap'), options(dvipscmd='dvips'),
options(latexcmd='latex'). For MacOS specify
options(xdvicmd='MacdviX') or if TeXShop is installed,
options(xdvicmd='open').
To use pdflatex rather than latex, set
options(latexcmd='pdflatex'),
options(dviExtension='pdf'), and set
options('xdvicmd') to your chosen PDF previewer.
If running S-Plus and your directory for temporary files is not
/tmp (Unix/Linux) or \windows\temp (Windows), add your
own tempdir function such as
tempdir <- function() "/yourmaindirectory/yoursubdirectory"
To prevent the latex file from being displayed store the result of
latex in an object, e.g. w <- latex(object, file='foo.tex').
# NOT RUN {
x <- matrix(1:6, nrow=2, dimnames=list(c('a','b'),c('c','d','this that')))
# }
# NOT RUN {
latex(x) # creates x.tex in working directory
# The result of the above command is an object of class "latex"
# which here is automatically printed by the latex print method.
# The latex print method prepends and appends latex headers and
# calls the latex program in the PATH. If the latex program is
# not in the PATH, you will get error messages from the operating
# system.
w <- latex(x, file='/tmp/my.tex')
# Does not call the latex program as the print method was not invoked
print.default(w)
# Shows the contents of the w variable without attempting to latex it.
d <- dvi(w) # compile LaTeX document, make .dvi
# latex assumed to be in path
d # or show(d) : run xdvi (assumed in path) to display
w # or show(w) : run dvi then xdvi
dvips(d) # run dvips to print document
dvips(w) # run dvi then dvips
library(tools)
texi2dvi('/tmp/my.tex') # compile and produce pdf file in working dir.
# }
# NOT RUN {
latex(x, file="") # just write out LaTeX code to screen
# }
# NOT RUN {
# Use paragraph formatting to wrap text to 3 in. wide in a column
d <- data.frame(x=1:2,
y=c(paste("a",
paste(rep("very",30),collapse=" "),"long string"),
"a short string"))
latex(d, file="", col.just=c("l", "p{3in}"), table.env=FALSE)
# }
# NOT RUN {
# }
# NOT RUN {
# After running latex( ) multiple times with different special styles in
# effect, make a file that will call for the needed LaTeX packages when
# latex is run (especially when using Sweave with R)
if(exists(latexStyles))
cat(paste('\usepackage{',latexStyles,'}',sep=''),
file='stylesused.tex', sep='\n')
# Then in the latex job have something like:
# \documentclass{article}
# \input{stylesused}
# \begin{document}
# ...
# }
Run the code above in your browser using DataLab