ifile(Rwinsteps)
ifile()所属R语言包：Rwinsteps
Item and Person Summary Files
项目和人总结文件
译者：生物统计家园网 机器人LoveR
描述----------Description----------
An “ifile” is a data frame containing statistical output for a set of items. A “pfile” is a data frame containing statistical output for a group of people, or examinees. These functions create, read, and convert to “ifile” and “pfile” objects.
一个“的ifile”含有的一组项目的统计输出是一个数据框。 A“的pfile”是一个数据框包含的一组人，或考生的统计输出。这些函数创建，读取和转换“ifile的”和“的pfile”的对象。
用法----------Usage----------
ifile(measure, entry = 1:length(measure), ...)
pfile(measure, entry = 1:length(measure), ...)
as.ifile(x)
as.pfile(x)
read.ifile(filename, skip = 1, col.names, sep = ",", ...)
read.pfile(filename, skip = 1, col.names, sep = ",", ...)
参数----------Arguments----------
参数：measure
numeric vector of item locations
项目位置的数字矢量
参数：entry
item position numbers, normally a sequence from 1 to the number of items
资料的位置号码，通常的序列从1到的项目数
参数：x
a data frame with items as rows, containing, at a minimum, columns titled “measure” and “entry”
一个数据框与作为行的项目，含有在最低限度，列标题为“测量”和“进入”
参数：filename
path to the file, which is assumed to be a table in 'csv' format
路径的文件，它被假定为csv格式格式中的一个表
参数：skip
number of header lines to skip, defaulting to 1
头要跳过的行数，默认为1
参数：col.names
vector of column names to be added to the file after it is read in
向量的列名添加到文件中后，它是只读
参数：sep
the field separator character, sent to read.table, defaulting to comma separated values
字段分隔符，发送到read.table，默认为逗号分隔值
参数：...
For ifile and pfile, additional variables, as vectors of the same length as measure, to be included in the ifile or pfile; for read.ifile and read.pfile, further arguments passed to read.table
对于ifile和pfile，额外的变量，相同长度的向量measure，在ifile或pfile中;read.ifile和read.pfile进一步的参数传递给read.table
Details
详细信息----------Details----------
The ifile contains item-level information, and the pfile person-level information, based on a fit of the Rasch model to a set of item-response data.
ifile里包含项目的信息，并pfile中的人级别的信息，一个合适的Rasch模型的一组项目响应数据的基础上。
Using read.ifile and read.pfile, the ifile and pfile are read in as 'csv' files, i.e., tables with sep = ",". These functions are simple wrappers for the function read.csv.
使用read.ifile和read.pfile，IFile和pfile中阅读“CSV”文件，即表sep = ","。这些功能简单包装的功能read.csv。
值----------Value----------
A data frame of class “ifile” or “pfile”
一个数据框类“的ifile”或“pfile中”
（作者）----------Author(s)----------
Anthony Albano <a href="mailto:tony.d.albano@gmail.com">tony.d.albano@gmail.com</a>
参见----------See Also----------
read.ifile, plot.ifile
read.ifile，plot.ifile
实例----------Examples----------
imeasure <- rnorm(5)
ifile(imeasure, name = paste("item", 1:5, sep = ""))
as.ifile(data.frame(measure = imeasure, entry = 1:5))
pmeasure <- rnorm(3)
pfile(pmeasure, name = c("Skeeter", "Shira", "Soto"))
as.pfile(data.frame(measure = pmeasure, entry = 1:3))
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 2012-9-29 20:57:38
