变量名限制为 256 字节
roxygenize 在执行以下代码时失败，并显示以下错误消息。关于此主题的其他帖子表明存在错误的字符。我找不到什么不妥的地方！你能发现问题所在吗？
#' My Title. My Description
#'
#' @return A n x n \code{\link{matrix}} where n = the number of variables. Row and column names are in the same order and are equivalent to the variable names in \samp{timeSeriesData}. Each entry [i,j] in the matrix is the covariance between variable i and variable j.
#' @callGraphPrimitives
#' @note some notes here
MyFunc = function( timeseriesData , method , decayFactor )
{
}
Error in do.call(paste, c(trimmed.lines, sep = "\n")) :
variable names are limited to 256 bytes
Calls: roxygenize ... parse.ref.list -> append -> parse.ref -> parse.ref.preref
-> do.call
Execution halted
编辑1
如果我从长@return行中取出几个单词
Edit2
， 上面的代码就可以正常工作 在 roxygenize 调用之前添加 sessionInfo() 结果。
R version 2.12.2 (2011-02-25)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics utils datasets grDevices methods base
other attached packages:
[1] roxygen_0.1-2 digest_0.4.2
roxygenize is failing on the following code with the following error message. Other posts on this topic indicate that there's a misplaced character. I can't find anything wrong! Can you spot the issue?
#' My Title. My Description
#'
#' @return A n x n \code{\link{matrix}} where n = the number of variables. Row and column names are in the same order and are equivalent to the variable names in \samp{timeSeriesData}. Each entry [i,j] in the matrix is the covariance between variable i and variable j.
#' @callGraphPrimitives
#' @note some notes here
MyFunc = function( timeseriesData , method , decayFactor )
{
}
Error in do.call(paste, c(trimmed.lines, sep = "\n")) :
variable names are limited to 256 bytes
Calls: roxygenize ... parse.ref.list -> append -> parse.ref -> parse.ref.preref
-> do.call
Execution halted
Edit1
The above code works just fine if I take out a few words from the long @return line
Edit2
Adding sessionInfo() results before the roxygenize call.
R version 2.12.2 (2011-02-25)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics utils datasets grDevices methods base
other attached packages:
[1] roxygen_0.1-2 digest_0.4.2
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评论（2）
这是一个已知的错误：请参阅此讨论，涉及 roxygen 的贡献者 Hadley Wickham。
解决方法是缩短行数：您的
#' @return A nxn ...行包含大约 270 个字符（包括三个句子），因此可以轻松拆分。This is a known bug: see this discussion involving Hadley Wickham, a contributor to roxygen.
The work-round is to have shorter lines: your
#' @return A n x n ...line has about 270 characters (including three sentences) in it, so could easily be split.另一种可能的解决方案是升级到 R2.13.0，现在字符长度的最大值为 10.000 而不是 256
The other possible solution is upgrading to R2.13.0, now your character length has a max value of 10.000 instead of 256