Filtering of genes based on number of non-available expression values.
基于非可用的表达式的值的数量基因筛选。
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This function can be used to exclude genes with a large
此功能可用于排除与一个大的基因
用法----------Usage----------
filter.NA(eset,thres=0.25)
参数----------Arguments----------
参数:eset
object of the class “ExpressionSet”.
的对象类“ExpressionSet”。
参数:thres
threshold for excluding genes. If the percentage of missing values (indicated by NA in the expression matrix) is larger than thres, the corresponding gene will be excluded.
不含基因的阈值。如果缺失值的百分比(钠在表达矩阵表示)大于thres,相应的基因将被排除在外。
值----------Value----------
The function produces an object of the ExpressionSet class. It is the
函数产生的ExpressionSet类的对象。这是
作者(S)----------Author(s)----------
Matthias E. Futschik (<a href="http://itb.biologie.hu-berlin.de/~futschik">http://itb.biologie.hu-berlin.de/~futschik</a>)
举例----------Examples----------
if (interactive()){
data(yeast) # data set includes 17 measurements[数据集包括17个测量]
yeastF <- filter.NA(yeast) # genes are excluded if more than 4 measurements are missing[基因被排除在外,如果缺少以上4个测量]
}