使用 xtable 时删除 data.frame 行名 [英] Remove data.frame row names when using xtable
问题描述
好的,我承认这个有点紧张(读作:愚蠢"),我认为这也很容易.我正在写一份报告,我想使用 xtable
包来生成 LaTeX 表(请注意,memisc
包可以完成这项工作,但说我只想用 <代码>xtable).
OK, I admit this one is a bit uptight (read: "stupid"), and I assume it's quite easy too. I'm writing a report and I want to use xtable
package for LaTeX table generation (note that memisc
package does the job, but say I want to do this solely with xtable
).
让我们使用标准的 mtcars
数据集和 reshape
包:
Let's use standard mtcars
dataset and reshape
package:
mdtf <- melt(mtcars, id.vars = c("am", "cyl"), measure.vars = c("mpg", "hp", "wt"))
( res <- cast(mdtf, am + cyl ~ variable, mean) )
am cyl mpg hp wt
1 0 4 22.90000 84.66667 2.935000
2 0 6 19.12500 115.25000 3.388750
3 0 8 15.05000 194.16667 4.104083
4 1 4 28.07500 81.87500 2.042250
5 1 6 20.56667 131.66667 2.755000
6 1 8 15.40000 299.50000 3.370000
如果我将其包装在 xtable
中,我将获得行名 (1..6):
If I wrap this inside xtable
, I'll get row names (1..6):
xtable(res)
% latex table generated in R 2.13.0 by xtable 1.5-6 package
% Fri Mar 25 09:40:12 2011
egin{table}[ht]
egin{center}
egin{tabular}{rrrrrr}
hline
& am & cyl & mpg & hp & wt \
hline
1 & 0.00 & 4.00 & 22.90 & 84.67 & 2.94 \
2 & 0.00 & 6.00 & 19.12 & 115.25 & 3.39 \
3 & 0.00 & 8.00 & 15.05 & 194.17 & 4.10 \
4 & 1.00 & 4.00 & 28.07 & 81.88 & 2.04 \
5 & 1.00 & 6.00 & 20.57 & 131.67 & 2.75 \
6 & 1.00 & 8.00 & 15.40 & 299.50 & 3.37 \
hline
end{tabular}
end{center}
end{table}
现在,我有没有机会避免这种情况(如果可能,单线)?
Now, is there any chance that I can avoid this (in one-liner, if possible)?
推荐答案
在 print
方法中使用 include.rownames=FALSE
.见 ?print.xtable
:
Use include.rownames=FALSE
in the print
method.
See ?print.xtable
:
R> print(xtable(res), include.rownames=FALSE)
% latex table generated in R 2.12.2 by xtable 1.5-6 package
% Fri Mar 25 10:06:08 2011
egin{table}[ht]
egin{center}
egin{tabular}{rrrrr}
hline
am & cyl & mpg & hp & wt \
hline
0.00 & 4.00 & 22.90 & 84.67 & 2.94 \
0.00 & 6.00 & 19.12 & 115.25 & 3.39 \
0.00 & 8.00 & 15.05 & 194.17 & 4.10 \
1.00 & 4.00 & 28.07 & 81.88 & 2.04 \
1.00 & 6.00 & 20.57 & 131.67 & 2.75 \
1.00 & 8.00 & 15.40 & 299.50 & 3.37 \
hline
end{tabular}
end{center}
end{table}
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