3 \title{Print Export Tables}
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5 Function returning and displaying or writing to disk the LaTeX or HTML
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6 code associated with the supplied object of class \code{xtable}.
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9 \method{print}{xtable}(x,
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10 type = getOption("xtable.type", "latex"),
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11 file = getOption("xtable.file", ""),
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12 append = getOption("xtable.append", FALSE),
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13 floating = getOption("xtable.floating", TRUE),
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14 floating.environment = getOption("xtable.floating.environment", "table"),
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15 table.placement = getOption("xtable.table.placement", "ht"),
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16 caption.placement = getOption("xtable.caption.placement", "bottom"),
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17 latex.environments = getOption("xtable.latex.environments", c("center")),
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18 tabular.environment = getOption("xtable.tabular.environment", "tabular"),
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19 size = getOption("xtable.size", NULL),
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20 hline.after = getOption("xtable.hline.after", c(-1,0,nrow(x))),
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21 NA.string = getOption("xtable.NA.string", ""),
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22 include.rownames = getOption("xtable.include.rownames", TRUE),
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23 include.colnames = getOption("xtable.include.colnames", TRUE),
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24 only.contents = getOption("xtable.only.contents", FALSE),
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25 add.to.row = getOption("xtable.add.to.row", NULL),
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26 sanitize.text.function = getOption("xtable.sanitize.text.function", NULL),
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27 sanitize.rownames.function = getOption("xtable.sanitize.rownames.function",
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28 sanitize.text.function),
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29 sanitize.colnames.function = getOption("xtable.sanitize.colnames.function",
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30 sanitize.text.function),
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31 math.style.negative = getOption("xtable.math.style.negative", FALSE),
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32 html.table.attributes = getOption("xtable.html.table.attributes",
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34 print.results = getOption("xtable.print.results", TRUE),
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35 format.args = getOption("xtable.format.args", NULL),
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36 rotate.rownames = getOption("xtable.rotate.rownames", FALSE),
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37 rotate.colnames = getOption("xtable.rotate.colnames", FALSE),
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38 booktabs = getOption("xtable.booktabs", FALSE),
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39 scalebox = getOption("xtable.scalebox", NULL),
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40 width = getOption("xtable.width", NULL),
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43 \item{x}{An object of class \code{"xtable"}.}
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44 \item{type}{Type of table to produce. Possible values for \code{type}
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45 are \code{"latex"} or \code{"html"}.
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46 Default value is \code{"latex"}.}
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47 \item{file}{Name of file where the resulting code should be saved. If
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48 \code{file=""}, output is displayed on screen. Note that the
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49 function also (invisibly) returns a character vector of the results
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50 (which can be helpful for post-processing).
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51 Default value is \code{""}.}
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52 \item{append}{If \code{TRUE} and \code{file!=""}, code will be
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53 appended to \code{file} instead of overwriting \code{file}.
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54 Default value is \code{FALSE}.}
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55 \item{floating}{If \code{TRUE} and \code{type="latex"}, the resulting
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56 table will be a floating table (using, for example,
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57 \code{\\begin\{table\}} and \code{\\end\{table\}}). See
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58 \code{floating.environment} below.
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59 Default value is \code{TRUE}. }
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60 \item{floating.environment}{If \code{floating=TRUE} and
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61 \code{type="latex"}, the resulting table uses the specified floating
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62 environment. Possible values are \code{"table"}, \code{"table*"}, or
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63 \code{"sidewaystable"} (defined in the LaTeX package
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65 Default value is \code{"table"}.}
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66 \item{table.placement}{If \code{floating=TRUE} and
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67 \code{type="latex"}, the floating table will have placement given by
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68 \code{table.placement} where \code{table.placement} must be
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69 \code{NULL} or contain only elements of
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70 \{"h","t","b","p","!","H"\}.
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71 Default value is \code{"ht"}.}
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72 \item{caption.placement}{The caption will be have placed at the bottom
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73 of the table if \code{caption.placement} is \code{"bottom"} and at
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74 the top of the table if it equals \code{"top"}.
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75 Default value is \code{"bottom"}.}
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76 \item{latex.environments}{If \code{floating=TRUE} and
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77 \code{type="latex"}, the specificed latex environments (provided as
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78 a character vector) will enclose the tabular environment.
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79 Default value is \code{"center"}. }
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80 \item{tabular.environment}{When \code{type="latex"}, the tabular
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81 environment that will be used.
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82 Defaults to \code{"tabular"}.
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83 When working with tables that extend more than one page, using
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84 \code{tabular.environment="longtable"} and the LaTeX package
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85 \code{"longtable"} (see Fairbairns, 2005) allows one to typeset them
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86 uniformly. Note that \code{"floating"} should be set to
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87 \code{"FALSE"} when using the \code{"longtable"} environment.}
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88 \item{size}{An arbitrary character vector intended to be used to set
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89 the font size in a LaTeX table. The supplied value (if not
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90 \code{NULL}) is inserted just before the tabular environment
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92 Default value is \code{NULL}. }
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93 \item{hline.after}{When \code{type="latex"}, a vector of numbers
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94 between -1 and \code{"nrow(x)"}, inclusive, indicating the rows
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95 after which a horizontal line should appear. If \code{NULL} is used
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96 no lines are produced.
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97 Default value is \code{c(-1,0,nrow(x))} which means draw a line
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98 before and after the columns names and at the end of the
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99 table. Repeated values are allowed.}
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100 \item{NA.string}{String to be used for missing values in table
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102 Default value is \code{""}.}
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103 \item{include.rownames}{logical. If \code{TRUE} the rows names is
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105 Default value is \code{TRUE}.}
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106 \item{include.colnames}{logical. If \code{TRUE} the columns names is
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108 Default value is \code{TRUE}.}
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109 \item{only.contents}{logical. If \code{TRUE} only the rows of the
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111 Default value is \code{FALSE}. }
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112 \item{add.to.row}{a list of two components. The first component (which
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113 should be called 'pos') is a list contains the position of rows on
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114 which extra commands should be added at the end, The second
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115 component (which should be called 'command') is a character vector
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116 of the same length of the first component which contains the command
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117 that should be added at the end of the specified rows.
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118 Default value is \code{NULL}, i.e. do not add commands.}
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119 \item{sanitize.text.function}{All non-numeric enteries (except row and
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120 column names) are sanitised in an attempt to remove characters which
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121 have special meaning for the output format. If
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122 \code{sanitize.text.function} is not NULL (the default), it should
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123 be a function taking a character vector and returning one, and will
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124 be used for the sanitization instead of the default internal
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126 \item{sanitize.rownames.function}{Like the
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127 \code{sanitize.text.function}, but applicable to row names.
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128 The default uses the \code{sanitize.text.function}. }
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129 \item{sanitize.colnames.function}{Like the
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130 \code{sanitize.text.function}, but applicable to column names.
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131 The default uses the \code{sanitize.text.function}. }
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132 \item{math.style.negative}{In a LaTeX table, if \code{TRUE}, then use
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133 $-$ for the negative sign (as was the behavior prior to version 1.5-3).
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134 Default value is \code{FALSE}.}
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135 \item{html.table.attributes}{In an HTML table, attributes associated
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136 with the \code{<TABLE>}tag.
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137 Default value is \code{border=1}.}
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138 \item{print.results}{If \code{TRUE}, the generated table is printed to
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139 standard output. Set this to \code{FALSE} if you will just be using
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140 the character vector that is returned invisibly.}
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141 \item{format.args}{List of arguments for the \code{formatC} function.
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142 For example, standard German number separators can be specified as
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143 \code{format.args=list(big.mark = "'", decimal.mark = ","))}. }
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144 \item{rotate.rownames}{If \code{TRUE}, the row names are displayed
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145 vertically in LaTeX. }
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146 \item{rotate.colnames}{If \code{TRUE}, the column names are displayed
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147 vertically in LaTeX. }
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148 \item{booktabs}{If \code{TRUE}, the \code{toprule}, \code{midrule} and
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149 \code{bottomrule} tags from the LaTex "booktabs" package are used
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150 rather than \code{hline} for the horizontal line tags. }
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151 \item{scalebox}{If not \code{NULL}, a \code{scalebox} clause will be
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152 added around the tabular environment with the specified value used
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153 as the scaling factor. }
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154 \item{width}{If not \code{NULL}, the specified value is included in
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155 parenthesis between the tabular environment \code{begin} tag and the
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156 alignment specification. This allows specification of the table
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157 width when using tabular environments such as \code{tabular*} and
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158 \code{tabularx}. Note that table width specification is not
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159 supported with the \code{tabular} or \code{longtable} environments. }
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160 \item{...}{Additional arguments. (Currently ignored.)}
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163 This function displays or writes to disk the code to produce a table
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164 associated with an object \code{x} of class \code{"xtable"}.
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165 The resulting code is either a LaTeX or HTML table, depending on the
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166 value of \code{type}. The function also (invisibly) returns a
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167 character vector of the results (which can be helpful for
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170 Since version 1.4 the non default behavior of \code{hline.after} is
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171 changed. To obtain the same results as the previous versions add to
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172 the \code{hline.after} vector the vector \code{c(-1, 0, nrow(x))}
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173 where \code{nrow(x)} is the numbers of rows of the object.
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175 From version 1.4-3, all non-numeric columns are sanitized, and all
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176 LaTeX special characters are sanitised for LaTeX output. See Section
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177 3 of the \code{xtableGallery} vignette for an example of customising
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178 the sanitization. From version 1.4-4, the sanitization also applies to
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179 column names. To remove any text sanitization, specify
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180 \code{sanitize.text.function=function(x){x}}.
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182 From version 1.6-1 the default values for the arguments other than
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183 \code{x} are obtainined using \code{getOption()}. Hence the user can
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184 set the values once with \code{options()} rather than setting them in
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185 every call to \code{print.xtable()}.
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188 David Dahl \email{dahl@stat.tamu.edu} with contributions and
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189 suggestions from many others (see source code).
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192 Fairbairns, Robin (2005) \emph{Tables longer than a single page} The
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193 UK List of TeX Frequently Asked Questions on the
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194 Web. \url{http://www.tex.ac.uk/cgi-bin/texfaq2html?label=longtab}
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197 \code{\link{xtable}}, \code{\link{caption}}, \code{\link{label}},
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198 \code{\link{align}}, \code{\link{digits}}, \code{\link{display}},
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199 \code{\link{formatC}}
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