read.450k.sheet(minfi)
read.450k.sheet()所属R语言包：minfi
Reading an Illumina methylation sample sheet
阅读Illumina的甲基化样品表
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Reading an Illumina methylation sample sheet, containing pheno-data information for the samples in an experiment.
阅读Illumina的甲基化样品表，表数据信息包含在一个实验样品。
用法----------Usage----------
read.450k.sheet(base, pattern = "csv$", ignore.case = TRUE,
recursive = TRUE, verbose = TRUE)
参数----------Arguments----------
参数：base
The base directory from which the search is started.
从开始搜索的基目录。
参数：pattern
What pattern is used to identify a sample sheet file, see list.files
什么模式是用来识别一个示例表文件，看到list.files
参数：ignore.case
Should the file search be case sensitive?
搜索该文件应该是大小写敏感的？
参数：recursive
Should the file search be recursive, see list.files?
应是递归的文件搜索，看到list.files？
参数：verbose
Should the function be verbose?
如果函数是冗长的吗？
Details
详情----------Details----------
This function search the directory base (possibly including subdirectories depending on the argument recursive for “sample sheet” files (see below). These files are identified solely on the base of their filename given by the arguments pattern and ignore.case (note the use of a dollarsign to mean end of file name).
此功能搜索目录base（可能包括子目录，取决于参数recursive为“样张”的文件，这些文件（见下文）。确定只给他们的文件名参数碱基pattern和ignore.case（注意使用dollarsign，意味着文件名的末尾）。
In case multiple sheet files are found, they are all read and the return object will contain the concatenation of the files.
多个表文件的情况下被发现，他们都读和返回的对象将包含文件的连接。
A sample sheet file is essentially a CSV (comma-separated) file containing one line per sample, with a number of columns describing pheno-data or other important information about the sample. The file may contain a header, in which case it is assumed that all lines up to and including a line starting with \[Data\] should be dropped. This is modelled after a sample sheet file Illumina provides. It is also very similar to the targets file made used by the popular limma package (see the extensive package vignette).
样品表文件本质上是一个CSV（逗号分隔）文件，其中包含描述表数据或其他重要信息，对样本的列数，每一个样本行。该文件可能包含一个头，在这种情况下，它假定所有线路包括行\[Data\]开始应该被丢弃。这是仿照示例表文件Illumina公司提供。 targets文件中流行的limma包（见广泛的一揽子暗角）也很相似。
An attempt at guessing the file path to the IDAT files represented in the sheet is made. This should be doublechecked and might need to manually changed.
猜测IDAT表示在表文件的文件路径的一个尝试。这应该是doublechecked的，可能需要手动更改。
值----------Value----------
A data.frame containing the columns of all the sample sheets. As described in details, a column named Sentrix_Position is renamed to Array and Sentrix_ID is renamed to Slide. In addition the data.frame will contain a column named Basename.
一个data.frame包含所有样品表列。中所述的细节，一列名为Sentrix_Position更名为Array和Sentrix_ID更名为Slide的。此外data.frame将包含名为Basename列。
作者（S）----------Author(s)----------
Kasper Daniel Hansen<a href="mailto:khansen@jhsph.edu">khansen@jhsph.edu</a>.
参见----------See Also----------
read.450k.exp and read.450k for functions reading IDAT files. list.files for help on the arguments recursive and ignore.case.
read.450k.exp和read.450k阅读IDAT文件的功能。 list.files参数的帮助recursive和ignore.case。
举例----------Examples----------
if(require(minfiData)) {
baseDir <- system.file("extdata", package = "minfiData")
sheet <- read.450k.sheet(baseDir)
}
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
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发表于 2012-2-26 01:00:07
