Nothing
R/tex_preview.R
In texPreview: Compile and Preview Snippets of 'LaTeX'
Defines functions
tex_preview.equation
tex_preview.xtable
tex_preview.knitr_kable
tex_preview.character
tex_preview.default
#' @title Render and Preview snippets of TeX in R Viewer
#' @description input TeX script into the function and it renders a pdf and
#' converts it an image which is sent to Viewer.
#' @param obj object to convert to TeX script
#' @param tex_lines vector of character, in case of special needs, instead of
#' asking texPreview to build up, you may choose to pass in the contents of the
#' complete LaTeX file directly. It should be a vector of character with each
#' element as a line of raw TeX code.
#' @param stem character, name to use in output files, Default: "tex_temp"
#' @param overwrite logical, controls if overwriting of output
#' stem* files given their existences, Default: TRUE
#' @param keep_pdf logical, controls if the rendered pdf file should be kept
#' or deleted, Default: FALSE
#' @param tex_message logical, controls if latex executing messages
#' are displayed in console. Default: FALSE
#' @param fileDir character, output destination. If NULL a temp.dir()
#' will be used and no output will be saved, Default: tex_opts$get('fileDir')
#' @param margin table margin for pdflatex call, Default: tex_opts$get('margin')
#' @param imgFormat character, defines the type of image the PDF is
#' converted to Default: tex_opts$get('imgFormat')
#' @param returnType character, one of "viewer", "html", or "tex"
#' determining appropriate return type for the rendering process,
#' Default: tex_opts$get('returnType')
#' @param resizebox logical, forces a tabular tex object to be constrained on the
#' margins of the document, Default: tex_opts$get('resizebox')
#' @param usrPackages character, vector of usepackage commands,
#' see details for string format
#' @param engine character, specifies which latex to pdf engine to use
#' ('pdflatex','xelatex','lualatex'), Default: tex_opts$get('engine')
#' @param cleanup character, vector of file extensions to clean up after
#' building pdf, Default: tex_opts$get('cleanup')
#' @param density numeric, controls the density of the image.
#' Default is 150: tex_opts$get('density)
#' @param svg_max numeric, maximum svg file size allowable to preview,
#' Default: tex_opts$get('svg_max')
#' @param print.xtable.opts list, contains arguments to pass to print.table,
#' relevant only if xtable is used as the input,
#' Default: tex_opts$get('print.xtable.opts')
#' @param opts.html list, html options, Default: tex_opts$get('opts.html')
#' @param markers logical, if TRUE then RStudio markers will be invoked to
#' create links for the log file on rendering errors, Default: interactive()
#' @param ... passed to [system2][base::system2]
#' @details
#'
#' `tex_preview` is an `S3 method` that can be used to preview TeX output from different
#' object classes.
#'
#' Built-in support includes:
#'
#' - character (tex lines)
#' - knitr_kable (kable/kableExtra)
#' - xtable
#' - texreg
#' - equatiomatic
#'
#' \foldstart{System Requirements}
#'
#' The function assumes the system has pdflatex installed and it is defined in the PATH.
#'
#' \foldend{}
#'
#' \foldstart{TeX Packages}
#'
#' To add packages to the tex file on render there are two options
#'
#' - Use [build_usepackage][texPreview::build_usepackage] and use the input
#' argument `usrPackages`.
#' - Append to the input object `\\usepackage{...}` calls, they will be parsed
#' and added the to rendering.
#'
#' \foldend{}
#'
#' \foldstart{Images}
#'
#' - An image file of the name stem with the extension specified in `imgFormat`.
#' - The default extension is png.
#'
#' \foldend{}
#'
#' \foldstart{Side effects}
#'
#' - The function writes two files to disk in the `fileDir`
#' - Image file
#' - TeX script
#' - The rendering files are removed up from the `fileDir`. This can
#' be controlled using the `cleanup` argument or `tex_opts$get('cleanup')`
#'
#' \foldend{}
#'
#' @return
#'
#' The output of the function is dependent on the value of returnType:
#'
#' - viewer: NULL
#' - magick image is printed in the internal viewer
#' - tex:
#' - character, TeX lines
#' - printed 'asis' in RMarkdown
#' - input: character
#' - path to the file containing the tex wrapped in an input call
#' - printed 'asis' in RMarkdown
#' - html: magick image
#' - Printed as an HTML document in the internal viewer
#' - Printed as an image in RMarkdown
#'
#' @examples
#' data('iris')
#' if(interactive()){
#'
#' # Raw TeX
#'
#' tex <- '\\begin{tabular}{llr}
#' \\hline
#' \\multicolumn{2}{c}{Item} \\\\
#' \\cline{1-2}
#' Animal & Description & Price (\\$) \\\\
#' \\hline
#' Gnat & per gram & 13.65 \\\\
#' & each & 0.01 \\\\
#' Gnu & stuffed & 92.50 \\\\
#' Emu & stuffed & 33.33 \\\\
#' Armadillo & frozen & 8.99 \\\\
#' \\hline
#' \\end{tabular}'
#'
#' # knitr kable
#'
#' mtcars |>
#' head() |>
#' knitr::kable("latex") |>
#' tex_preview()
#'
#' # with svg output pan/zoom is enabled in the internal viewer
#'
#' tex_preview(obj = tex,stem = 'eq',imgFormat = 'svg')
#'
#' # use tex_lines parameter to pass full document
#'
#' tikz_path <- system.file(
#' 'examples/tikz/credit_rationing.tex',
#' package = 'texPreview'
#' )
#'
#' tex_preview(tex_lines = readLines(tikz_path))
#'
#' }
#' @concept tex
#' @rdname tex_preview
#' @export
tex_preview <- function (obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...)
{
UseMethod('tex_preview')
}
#' @export
tex_preview.default <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...) {
session_opts <- tex_opts$get()
tex_opts$set(
fileDir = fileDir,
margin = margin,
imgFormat = imgFormat,
returnType = returnType,
resizebox = resizebox,
engine = engine,
usrPackages = usrPackages,
cleanup = cleanup,
density = density,
print.xtable.opts = print.xtable.opts,
opts.html = opts.html,
svg_max = svg_max
)
on.exit({
if(!exists('keep_log')) keep_log <- TRUE
tex_cleanup(cleanup,stem,keep_pdf,keep_log)
tex_opts$set(session_opts)
},add = TRUE)
write_flag <- tex_dir_setup()
if (is.null(tex_lines)) {
tex_lines <- build_lines(obj, stem, tex_opts$get('usrPackages'))
}else{
cat(tex_lines,file = file.path(tex_opts$get('fileDir'),sprintf('%s.tex',stem)),sep = '\n')
}
tab_lines <- readLines(file.path(tex_opts$get('fileDir'),sprintf('%s.tex',stem)))
class(tab_lines) <- sprintf('texpreview_%s',tex_opts$get('returnType'))
tex_log <- tex_build(tex_lines, stem, tex_message, ...)
keep_log <- attr(tex_log,'error')
if(keep_log){
if(markers){
make_marker(stem,tex_log)
}
stop(parse_log(tex_log))
}
imgOut <- tex_image(obj,stem, write_flag, overwrite)
tex_viewer(imgOut, stem)
return(tex_return(obj = tab_lines,stem, img_format = imgFormat))
}
#' @export
tex_preview.character <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
tex_preview.default(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
#' @export
tex_preview.knitr_kable <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
if(attr(obj,'format')!='latex')
stop('object must have latex format')
obj <- as.character(obj)
tex_preview(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
#' @export
tex_preview.xtable <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
write_flag <- tex_dir_setup()
print.xtable.opts$x <- obj
print.xtable.opts$comment <- FALSE
if (!"file" %in% names(print.xtable.opts)) {
print.xtable.opts$file <- file.path(fileDir, paste0(stem,".tex"))
}
obj <- do.call("print", print.xtable.opts)
tex_preview(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
#' @export
tex_preview.equation <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
obj <- sprintf('$$\n%s\n$$',as.character(obj))
tex_preview(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
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Defines functions tex_preview.equation tex_preview.xtable tex_preview.knitr_kable tex_preview.character tex_preview.default
#' @title Render and Preview snippets of TeX in R Viewer
#' @description input TeX script into the function and it renders a pdf and
#' converts it an image which is sent to Viewer.
#' @param obj object to convert to TeX script
#' @param tex_lines vector of character, in case of special needs, instead of
#' asking texPreview to build up, you may choose to pass in the contents of the
#' complete LaTeX file directly. It should be a vector of character with each
#' element as a line of raw TeX code.
#' @param stem character, name to use in output files, Default: "tex_temp"
#' @param overwrite logical, controls if overwriting of output
#' stem* files given their existences, Default: TRUE
#' @param keep_pdf logical, controls if the rendered pdf file should be kept
#' or deleted, Default: FALSE
#' @param tex_message logical, controls if latex executing messages
#' are displayed in console. Default: FALSE
#' @param fileDir character, output destination. If NULL a temp.dir()
#' will be used and no output will be saved, Default: tex_opts$get('fileDir')
#' @param margin table margin for pdflatex call, Default: tex_opts$get('margin')
#' @param imgFormat character, defines the type of image the PDF is
#' converted to Default: tex_opts$get('imgFormat')
#' @param returnType character, one of "viewer", "html", or "tex"
#' determining appropriate return type for the rendering process,
#' Default: tex_opts$get('returnType')
#' @param resizebox logical, forces a tabular tex object to be constrained on the
#' margins of the document, Default: tex_opts$get('resizebox')
#' @param usrPackages character, vector of usepackage commands,
#' see details for string format
#' @param engine character, specifies which latex to pdf engine to use
#' ('pdflatex','xelatex','lualatex'), Default: tex_opts$get('engine')
#' @param cleanup character, vector of file extensions to clean up after
#' building pdf, Default: tex_opts$get('cleanup')
#' @param density numeric, controls the density of the image.
#' Default is 150: tex_opts$get('density)
#' @param svg_max numeric, maximum svg file size allowable to preview,
#' Default: tex_opts$get('svg_max')
#' @param print.xtable.opts list, contains arguments to pass to print.table,
#' relevant only if xtable is used as the input,
#' Default: tex_opts$get('print.xtable.opts')
#' @param opts.html list, html options, Default: tex_opts$get('opts.html')
#' @param markers logical, if TRUE then RStudio markers will be invoked to
#' create links for the log file on rendering errors, Default: interactive()
#' @param ... passed to [system2][base::system2]
#' @details
#'
#' `tex_preview` is an `S3 method` that can be used to preview TeX output from different
#' object classes.
#'
#' Built-in support includes:
#'
#' - character (tex lines)
#' - knitr_kable (kable/kableExtra)
#' - xtable
#' - texreg
#' - equatiomatic
#'
#' \foldstart{System Requirements}
#'
#' The function assumes the system has pdflatex installed and it is defined in the PATH.
#'
#' \foldend{}
#'
#' \foldstart{TeX Packages}
#'
#' To add packages to the tex file on render there are two options
#'
#' - Use [build_usepackage][texPreview::build_usepackage] and use the input
#' argument `usrPackages`.
#' - Append to the input object `\\usepackage{...}` calls, they will be parsed
#' and added the to rendering.
#'
#' \foldend{}
#'
#' \foldstart{Images}
#'
#' - An image file of the name stem with the extension specified in `imgFormat`.
#' - The default extension is png.
#'
#' \foldend{}
#'
#' \foldstart{Side effects}
#'
#' - The function writes two files to disk in the `fileDir`
#' - Image file
#' - TeX script
#' - The rendering files are removed up from the `fileDir`. This can
#' be controlled using the `cleanup` argument or `tex_opts$get('cleanup')`
#'
#' \foldend{}
#'
#' @return
#'
#' The output of the function is dependent on the value of returnType:
#'
#' - viewer: NULL
#' - magick image is printed in the internal viewer
#' - tex:
#' - character, TeX lines
#' - printed 'asis' in RMarkdown
#' - input: character
#' - path to the file containing the tex wrapped in an input call
#' - printed 'asis' in RMarkdown
#' - html: magick image
#' - Printed as an HTML document in the internal viewer
#' - Printed as an image in RMarkdown
#'
#' @examples
#' data('iris')
#' if(interactive()){
#'
#' # Raw TeX
#'
#' tex <- '\\begin{tabular}{llr}
#' \\hline
#' \\multicolumn{2}{c}{Item} \\\\
#' \\cline{1-2}
#' Animal & Description & Price (\\$) \\\\
#' \\hline
#' Gnat & per gram & 13.65 \\\\
#' & each & 0.01 \\\\
#' Gnu & stuffed & 92.50 \\\\
#' Emu & stuffed & 33.33 \\\\
#' Armadillo & frozen & 8.99 \\\\
#' \\hline
#' \\end{tabular}'
#'
#' # knitr kable
#'
#' mtcars |>
#' head() |>
#' knitr::kable("latex") |>
#' tex_preview()
#'
#' # with svg output pan/zoom is enabled in the internal viewer
#'
#' tex_preview(obj = tex,stem = 'eq',imgFormat = 'svg')
#'
#' # use tex_lines parameter to pass full document
#'
#' tikz_path <- system.file(
#' 'examples/tikz/credit_rationing.tex',
#' package = 'texPreview'
#' )
#'
#' tex_preview(tex_lines = readLines(tikz_path))
#'
#' }
#' @concept tex
#' @rdname tex_preview
#' @export
tex_preview <- function (obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...)
{
UseMethod('tex_preview')
}
#' @export
tex_preview.default <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...) {
session_opts <- tex_opts$get()
tex_opts$set(
fileDir = fileDir,
margin = margin,
imgFormat = imgFormat,
returnType = returnType,
resizebox = resizebox,
engine = engine,
usrPackages = usrPackages,
cleanup = cleanup,
density = density,
print.xtable.opts = print.xtable.opts,
opts.html = opts.html,
svg_max = svg_max
)
on.exit({
if(!exists('keep_log')) keep_log <- TRUE
tex_cleanup(cleanup,stem,keep_pdf,keep_log)
tex_opts$set(session_opts)
},add = TRUE)
write_flag <- tex_dir_setup()
if (is.null(tex_lines)) {
tex_lines <- build_lines(obj, stem, tex_opts$get('usrPackages'))
}else{
cat(tex_lines,file = file.path(tex_opts$get('fileDir'),sprintf('%s.tex',stem)),sep = '\n')
}
tab_lines <- readLines(file.path(tex_opts$get('fileDir'),sprintf('%s.tex',stem)))
class(tab_lines) <- sprintf('texpreview_%s',tex_opts$get('returnType'))
tex_log <- tex_build(tex_lines, stem, tex_message, ...)
keep_log <- attr(tex_log,'error')
if(keep_log){
if(markers){
make_marker(stem,tex_log)
}
stop(parse_log(tex_log))
}
imgOut <- tex_image(obj,stem, write_flag, overwrite)
tex_viewer(imgOut, stem)
return(tex_return(obj = tab_lines,stem, img_format = imgFormat))
}
#' @export
tex_preview.character <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
tex_preview.default(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
#' @export
tex_preview.knitr_kable <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
if(attr(obj,'format')!='latex')
stop('object must have latex format')
obj <- as.character(obj)
tex_preview(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
#' @export
tex_preview.xtable <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
write_flag <- tex_dir_setup()
print.xtable.opts$x <- obj
print.xtable.opts$comment <- FALSE
if (!"file" %in% names(print.xtable.opts)) {
print.xtable.opts$file <- file.path(fileDir, paste0(stem,".tex"))
}
obj <- do.call("print", print.xtable.opts)
tex_preview(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
#' @export
tex_preview.equation <- function(obj,
tex_lines = NULL,
stem = "tex_temp",
overwrite = TRUE,
keep_pdf = FALSE,
tex_message = FALSE,
fileDir = tex_opts$get('fileDir'),
margin = tex_opts$get('margin'),
imgFormat = tex_opts$get('imgFormat'),
returnType = tex_opts$get('returnType'),
resizebox = tex_opts$get('resizebox'),
usrPackages = tex_opts$get('usrPackages'),
engine = tex_opts$get('engine'),
cleanup = tex_opts$get('cleanup'),
density = tex_opts$get('density'),
svg_max = tex_opts$get('svg_max'),
print.xtable.opts = tex_opts$get('print.xtable.opts'),
opts.html = tex_opts$get('opts.html'),
markers = interactive(),...){
obj <- sprintf('$$\n%s\n$$',as.character(obj))
tex_preview(obj,tex_lines,stem,overwrite,keep_pdf,
tex_message,fileDir,margin,
imgFormat,returnType,resizebox,usrPackages,
engine,cleanup,density,svg_max,
print.xtable.opts,opts.html,markers,...)
}
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