PDMByFactorAnalysis(phenoDist)
PDMByFactorAnalysis()所属R语言包:phenoDist
Calculate phenotypic distance matrix by factor analysis
通过因子分析计算表型的距离矩阵
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This function transforms the cell features by factor analysis and computes the phenotypic distance matrix.
此功能转换单元的功能,通过因子分析和计算表型的距离矩阵。
用法----------Usage----------
PDMByFactorAnalysis(x, unames, selectedCellFtrs, distMethod=c('manhattan','euclidean', 'correlation','mahalanobis'), nFactors, scores=c('regression','Bartlett'), ...)
参数----------Arguments----------
参数:x
An imageHTS object.
imageHTS对象。
参数:unames
A character vector, containing the well names from where to collect the cell features. See getUnames for details.
一个特征向量,包含从哪里收集单元功能的好名字。看到getUnames详情。
参数:selectedCellFtrs
A character vector for cell features to be used in the calculation. If missing, all features are used.
用于计算单元功能的一个特征向量。如果缺少,使用所有功能。
参数:distMethod
A character string indicating which distance method should be used. This must be (an abbreviation of) one of the strings 'manhattan', 'euclidean', 'correlation' or 'mahalanobis'.
应使用一个字符串,指示哪个距离的方法。这必须是(缩写)“曼哈顿”,“欧几里得”,“相关”或“马氏”的字符串之一。
参数:nFactors
An integer scalar for the number of factors.
一个因素数量的整数标。
参数:scores
A character string indicating the type of scores to be reported by factor analysis. This must be (an abbreviation of) one of the strings 'regression' or 'Bartlett'.
一个字符串,表示因素分析报告的分数。这必须是(缩写)字符串回归或巴特利特之一。
参数:...
Additional arguments to be passed to the factanal function of the stats pacakge.
额外的参数将被传递给factanalpacakge功能stats。
Details
详情----------Details----------
This function first collects individual cell features in all wells (which could be time and memory consuming), performs factor analysis on cell features and transforms cell features into a certain number of factors, and then the factors are averaged by well and passed to PDMByWellAvg to calculate the phenotypic distance matrix.
这个函数首先收集所有井(这可能是时间和内存消耗)的单个单元的功能,执行单元功能的因素分析,并转换成单元功能的若干因素,然后平均的因素和传递PDMByWellAvg来计算的表型的距离矩阵。
值----------Value----------
A symmetric distance matrix with dimensions equaling to the length of unames.
具有相当于的unames长度尺寸的对称距离矩阵。
作者(S)----------Author(s)----------
Xian Zhang
参见----------See Also----------
factanal, PDMByWellAvg
factanal,PDMByWellAvg
举例----------Examples----------
library('phenoDist')
## load the imageHTS object[#加载imageHTS对象。]
load(system.file('kimorph', 'kimorph.rda', package='phenoDist'))
x@localPath <- file.path(tempdir(), 'kimorph')
## segmentation and feature extraction[#分割和特征提取]
unames <- setdiff(getUnames(x), getUnames(x, content='empty'))
## calculate pair-wise svm distance matrix[#计算成对SVM距离矩阵]
load(system.file('kimorph', 'selectedFtrs.rda', package='phenoDist'))
pdm <- PDMByFactorAnalysis(x, unames=getUnames(x, plate=1, row=2:3, col=3), selectedCellFtrs, distMethod='euclidean', nFactors=10, scores='regression')
pdm
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。
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