Filter(AffyExpress)
Filter()所属R语言包:AffyExpress
filter an 'ExpressionSet' using different methods
过滤ExpressionSet用不同的方法
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Create a filtered 'ExpressionSet' based on background, range, or interquartile range
创建一个过滤“ExpressionSet”背景的基础上,范围,或四分范围
用法----------Usage----------
Filter(object, numChip=1, bg=0, range=0, iqrPct=0)
参数----------Arguments----------
参数:object
an 'ExpressionSet'
ExpressionSet“
参数:numChip
number of chips. If you would like to filter the 'ExpressionSet' based on at least 3 chips greater than 1 (bg=1), then set numChip = 3
芯片的数目。如果你想过滤“ExpressionSet基于3芯片至少大于1(BG = 1),然后设置numChip = 3
参数:bg
background value. If you would like to filter the 'ExpressionSet' based on at least 3 chips greater than 1, then set bg=1
背景值。如果你想过滤“ExpressionSet的基础上至少3个芯片,大于1,则设置BG = 1
参数:range
range = max value - min value of each gene
范围=最大值 - 分钟,每个基因的价值
参数:iqrPct
interquartile percentage.
四分位数的百分比。
Details
详情----------Details----------
There are three filtering methods. The User can use either one, two, or three. 1. At least a certain number of chips (numChip) are greater than a given background (bg). 2. The range of the gene have to be greater than a given value (range). 3. Calulating the interquatile range (IQR) of each gene to create an IQR vector. Based on the given percentage (e.g. iqrPct=0.2), find the corresponding percentile. If IQR is less than percentile, the gene will be filtered.
有三种过滤方法。用户可以使用一个,两个或三个。 1。至少有一定的芯片数量(numChip)大于一个给定的背景(BG)。 2。该基因的范围必须大于给定值(范围)。 3。采掘工作面的每一个基因的interquatile范围(四分)创建一个四分向量。基于给定的百分比(例如iqrPct = 0.2),找到相应的百分位。如果IQR为比百分较少,基因将被过滤。
值----------Value----------
a filtered 'ExpressionSet'
经过筛选的“ExpressionSet”
作者(S)----------Author(s)----------
Xiwei Wu <a href="mailto:xwu@coh.org">xwu@coh.org</a>, Xuejun Arthur Li <a href="mailto:xueli@coh.org">xueli@coh.org</a>
举例----------Examples----------
data(testData)
normaldata<-pre.process("rma",testData)
##At least one chip is greater than 4[#至少有一个芯片是大于4]
filtered.1<-Filter(normaldata, numChip=1, bg=4)
##At least one chip is greater than 4 and range >0.5[#至少有一个芯片是大于4的范围> 0.5]
filtered.2<-Filter(normaldata, numChip=1, bg=4, range=0.5)
##range >0.5 and IQR > 20percentile[#范围> 0.5和四分> 20percentile]
filtered.3<-Filter(normaldata, range=0.5, iqrPct=0.2)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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