cqn(cqn)
cqn()所属R语言包:cqn
CQN (conditional quantile normalization) for RNA-Seq data
,CQN(条件位数标准化)为RNA序列数据
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This function implements CQN (conditional quantile normalization) for RNA-Seq data.
此功能实现:CQN RNA序列数据(有条件的位数标准化)。
用法----------Usage----------
cqn(counts, x, lengths, sizeFactors = NULL, subindex = NULL, tau = 0.5, sqn = TRUE, verbose = FALSE)
cqn.fixedlength(counts, x, lengths, sizeFactors = NULL, subindex = NULL, tau = 0.5, sqn = TRUE, verbose = FALSE)
参数----------Arguments----------
参数:counts
An object that can be coerced to a matrix of region by sample counts. Ought to have integer values.
一个可以强制区域matrix的样本计数的对象。应该有整数值。
参数:x
This is a covariate whose systematic influence on the counts will be removed. Typically the GC content. Has to have the same length as the number of rows of counts.
这是一个协的计数系统的影响将被删除。通常,GC含量。必须具有相同长度计数的行数。
参数:lengths
The lengths (in bp) of the regions in counts. Has to have the same length as the number of rows of counts.
计数的区域的长度(BP)。必须具有相同长度计数的行数。
参数:sizeFactors
An optional vector of sizeFactors, ie. the sequencing effort of the various samples. If NULL this is calculated as the column sums of counts.
可选的sizeFactors的向量,即。各种样品的测序工作。如果NULL这是counts列金额计算。
参数:subindex
An optional vector of indices into the rows of counts. If not given, this becomes the indices of genes with row means of counts greater then 50.
可选的counts行指数的向量。如果没有给出,这将成为基因与行的指数意味着counts大于50。
参数:tau
This argument is passed to rq, it indicates what quantile is being fit. The default should only be changed by expert users..
这个参数传递给rq,它表示什么分量正在适应。默认情况下只应改变由专家用户..
参数:sqn
This argument indicates whether the residuals from the systematic fit are (subset) quantile normalized. The default should only be changed by expert users.
这种说法表明,无论是从系统的合适的残差归(子集)位数。默认情况下只应改变由专家用户。
参数:verbose
Is the function verbose?
是函数的详细吗?
Details
详情----------Details----------
These functions implement the CQN (conditional quantile normalization) for RNA-Seq data. The functions remove a single systematic effect, contained in the argument x, which will typicall be GC content. The effect of lengths will either be modelled as a smooth function (which we recommend), if you are using cqn or as an offset (equivalent to modelling using RPKMs), if you are using cqn.fixedlength.
实现这些功能的RNA序列数据CQN(有条件的位数标准化)。功能删除一个单一系统的影响,包含在参数x典型地,这将是GC含量。如果您正在使用lengths或作为一个偏移量(相当于建模使用RPKMs),如果您正在使用的<X效果cqn将被建模为一个光滑函数(我们建议), >
Final corrected values are equal to value$y + value$offset.
最终修正值是平等value$y + value$offset。
值----------Value----------
A list with the following components
一个list以下组件
参数:counts
The value of argument counts.
参数counts值。
参数:x
The value of argument x.
参数x值。
参数:lengths
The value of argument lengths.
参数lengths值。
参数:sizeFactors
The value of argument sizeFactors. In case the argument was NULL, this is the value used internally.
参数sizeFactors值。参数的情况下NULL,这是内部使用的价值。
参数:subindex
The value of argument subindex. In case the argument was NULL, this is the value used internally.
参数subindex值。参数的情况下NULL,这是内部使用的价值。
参数:y
The dependent value used in the systematic effect fit. Equal to log2 tranformed reads per millions.
依赖的价值在系统的效果适合使用。等于log2 tranformed读取每百万。
参数:offset
The estimated offset.
估计的偏移量。
参数:offset0
A single number used internally for identifiability.
辨识内部使用一个单一的数字。
参数:func1
The estimated effect of function 1 (argument x). This is a matrix of function values on a grid. Columns are samples and rows are grid points.
功能:1估计的影响(参数x)。这是一个矩阵网格上的函数值。列样品和行格点。
参数:grid1
The grid points on which function 1 (argument x) was evaluated.
网格的功能:1(参数x)进行了评估点。
参数:knots1
The knots used for function 1 (argument x).
用于功能1海里(参数x)。
参数:func2
The estimated effect of function 2 (lengths). This is a matrix of function values on a grid. Columns are samples and rows are grid points.
估计影响功能2(长度)。这是一个矩阵网格上的函数值。列样品和行格点。
参数:grid2
The grid points on which function 2 (lengths) was evaluated.
格点功能2(长度)进行了评估。
参数:knots2
The knots used for function 2 (lengths).
用于功能2(长度)的疙瘩。
注意----------Note----------
Internally, the function uses a custom implementation of subset quantile normalization, contained in the (not exported) SQN2 function.
内部功能使用自定义实现一个子集位数标准化,载(不出口)SQN2的功能。
作者(S)----------Author(s)----------
Kasper Daniel Hansen, Zhijin Wu
参考文献----------References----------
variability in RNA-seq data using conditional quantile normalization, Johns Hopkins, Dept of Biostatistics Working Papers. Working Paper
参见----------See Also----------
The package vignette.
包小插曲。
举例----------Examples----------
data(montgomery.subset)
data(sizeFactors.subset)
data(uCovar)
cqn.subset <- cqn(montgomery.subset, lengths = uCovar$length,
x = uCovar$gccontent, sizeFactors = sizeFactors.subset,
verbose = TRUE)
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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