reStruct(nlme)
reStruct()所属R语言包：nlme
Random Effects Structure
随机效应结构
译者：生物统计家园网 机器人LoveR
描述----------Description----------
This function is a constructor for the reStruct class, representing a random effects structure and consisting of a list of pdMat objects, plus a settings attribute containing information for the optimization algorithm used to fit the associated mixed-effects model.
这个函数为reStruct类的构造，代表随机效应的结构和组成的pdMat对象名单，加上settings属性包含使用优化算法，以适应信息相关的混合效应模型。
用法----------Usage----------
reStruct(object, pdClass, REML, data)
## S3 method for class 'reStruct'
print(x, sigma, reEstimates, verbose, ...)
参数----------Arguments----------
参数：object
any of the following: (i) a one-sided formula of the form ~x1+...+xn | g1/.../gm, with x1+...+xn specifying the model for the random effects and g1/.../gm the grouping structure (m may be equal to 1, in which case no / is required). The random effects formula will be repeated for all levels of grouping, in the case of multiple levels of grouping; (ii) a list of one-sided formulas of the form ~x1+...+xn | g, with possibly different random effects models for each grouping level. The order of nesting will be assumed the same as the order of the elements in the list; (iii) a one-sided formula of the form ~x1+...+xn, or a pdMat object with a formula (i.e. a non-NULL value for formula(object)), or a list of such formulas or pdMat objects. In this case, the grouping structure formula will be derived from the data used to to fit the mixed-effects model, which should inherit from class groupedData; (iv) a named list of formulas or pdMat objects as in (iii), with the grouping factors as names. The order of nesting will be assumed the same as the order of the order of the elements in the list; (v) an reStruct object.
任何以下内容：（一）片面的公式的形式~x1+...+xn | g1/.../gm，x1+...+xn指定模型的随机效应和g1/.../gm分组结构（m可能等于1，在这种情况下，没有/）。随机效应的公式将重复所有级别的分组，在分组的多层次的情况下;（ii）为每个分组形式~x1+...+xn | g可能有不同的随机效应模型，片面的公式列表水平。嵌套的顺序将被假设为列表中的元素的顺序相同;（三）片面的公式与公式的形式~x1+...+xn或pdMat对象（即非NULL值formula(object)），或如公式或pdMat对象名单。在这种情况下，分组结构公式将来自使用适合混合效应模型的数据，应该继承类groupedData;（四）一个公式或pdMat对象的命名列表（三），作为名称的分组因素。嵌套的顺序将被假定为顺序列表中的元素的顺序相同;（V）reStruct的对象。
参数：pdClass
an optional character string with the name of the pdMat class to be used for the formulas in object. Defaults to "pdSymm" which corresponds to a general positive-definite matrix.
要在pdMat公式中使用与object类的名称，可选的字符串。默认"pdSymm"这相当于一般正定矩阵。
参数：REML
an optional logical value. If TRUE, the associated mixed-effects model will be fitted using restricted maximum likelihood; else, if FALSE, maximum likelihood will be used. Defaults to FALSE.
一个可选的逻辑值。如果TRUE，相关的混合效应模型将安装使用限制最大的可能性;否则，如果FALSE，最大的可能性将使用。 FALSE默认。
参数：data
an optional data frame in which to evaluate the variables used in the random effects formulas in object. It is used to obtain the levels for factors, which affect the dimensions and the row/column names of the underlying pdMat objects. If NULL, no attempt is made to obtain information on factors appearing in the formulas. Defaults to the parent frame from which the function was called.
评估随机效应公式中使用的变量在object可选的数据框。它使用的获得factors，影响尺寸和底层pdMat对象的行/列名的水平。如果NULL，没有尝试获得factors公式中出现的信息。默认从该函数被调用的父框架。
参数：x
an object inheriting from class reStruct to be printed.
一个对象从reStruct类继承要打印。
参数：sigma
an optional numeric value used as a multiplier for the square-root factors of the pdMat components (usually the estimated within-group standard deviation from a mixed-effects model). Defaults to 1.
pdMat组件（通常从混合效应模型估计组内标准差）的平方根因素的乘数作为一个可选的数字值。默认为1。
参数：reEstimates
an optional list with the random effects estimates for each level of grouping. Only used when verbose = TRUE.
可选列表与随机效应估计为每个分组级别。只用时verbose = TRUE。
参数：verbose
an optional logical value determining if the random effects estimates should be printed. Defaults to FALSE.
一个可选的逻辑值，确定是否应印有随机效应估计。 FALSE默认。
参数：...
Optional arguments can be given to other methods for this generic. None are used in this method.
可选参数，可以给这个通用的其他方法。没有使用这种方法。
值----------Value----------
an object inheriting from class reStruct, representing a random effects structure.
一个对象类reStruct代表随机效应的结构，继承。
作者（S）----------Author(s)----------
Jose Pinheiro and Douglas Bates <a href="mailto:bates@stat.wisc.edu">bates@stat.wisc.edu</a>
参见----------See Also----------
groupedData, lme, pdMat, solve.reStruct, summary.reStruct, update.reStruct
groupedData，lme，pdMat，solve.reStruct，summary.reStruct，update.reStruct
举例----------Examples----------
rs1 <- reStruct(list(Dog = ~day, Side = ~1), data = Pixel)
rs1
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。
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发表于 2012-2-16 20:33:16
