Question

我有一些多维数据（调查数据：有些人回答彼此的问题），我想用knitr输出一个乳胶表。一切都按预期工作，除了表格很长，所以我想使用格式化选项longtable自动打破页面底部的表格并继续下一个表格。这由于某种原因不起作用，该选项被忽略：代码输出＆＃34; tex表＆＃34;但在默认的＆＃34;表＆＃34;格式。但是，其他选项不会被忽略（例如rotate.colnames）。

我首先制作ftable并使用xtableFtable（包xtable的一部分）将其转换为xtable。然后我使用print.xtableFtable函数以乳胶格式输出实际表。

参考print.xtableFtable上的文档，然后使用选项tabular.environment = getOption("xtable.tabular.environment", "longtable")。但是，忽略此选项（也没有错误或警告消息）和＆＃34;正常＆＃34;表打印。使用短格式tabular.environment = "longtable"也会被忽略。

奇怪的是，选项rotate.colnames = TRUE不会被忽略，但我不明白为什么。它可能与xtableFtable函数有关，因为正常的二维表打印了＆＃34; longtable＆＃34;选项，但我不确切知道。

# sample data - 3 people asked how often they agree with the others
dat <- data.frame("interviewee" = c(1, 1, 2, 2, 3, 3), "subject" = c(2, 2, 3, 3, 1, 1, 1, 3, 1, 2, 2, 2), "answer" = c("agrees", "agrees", "agrees", "disagrees", "disagrees", "disagrees", "agrees", "agrees", "disagrees", "disagrees", "disagrees", "agrees"))

# using ftable to see frequencies how often people agree and disagree with each other
# (this is also how I would like the latex table to look)
f.dat <- ftable(dat$interviewee, dat$answer, dat$subject)

# converting to xtable 
x.f.table <- xtableFtable(f.dat)

# printing to .tex format
print.xtableFtable(x.f.table)

# previous line works as expected, except that the table is spanning multiple pages so I want to use the option "longtable" 
# the next lines don't work (as in, the environment option is ignored)
print.xtableFtable(x.f.table, tabular.environment = getOption("xtable.tabular.environment", "longtable"))
print.xtableFtable(x.f.table, tabular.environment = "longtable") 

# this however does work: the column names are rotated
print.xtableFtable(x.f.table, rotate.colnames = TRUE)

# using a normal table, so without ftable, gives output using the option longtable
simple.table = table(dat$interviewee, dat$answers)
print(simple.table, tabular.environment = "longtable")

我非常欢迎任何建议，解决方案或其他方式来完成这项工作

Answer 1

不是回答为什么函数会忽略某些选项，但感谢user20650指出我之前的问题/答案，建议设置全局选项而不是传入功能。

现在确实有效：

# first set the global options
options(xtable.tabular.environment = "longtable")

# continuing with the data from the question
print.xtableFtable(x.f.table)

（出于某种原因，选项rotate.columns = TRUE现在在编译tex代码时出错，但这是另一个问题）

使用xtable打印表时不一致的选项 - ftable - knitr

1 个答案: