Message-ID: <15790621.post@talk.nabble.com>
Date: 2008-03-02T17:30:35Z
From: Keizer_71
Subject: Variance Calculation in R
Hello,
Thanks everyone for helping me with the previous queries.
step 1: Here is the orginal data: short sample
ProbeID Sample_1_D Sample_1_C Sample_2_D Sample_2_C
1 224588_at 2.425509867 11.34031409 11.46868531 11.75741478
step 2: i calculate the variance of the sample using this R code
x<-1:20000
y<-2:141
data.matrix<-data.matrix(data[,y])#create data.matrix
variableprobe<-apply(data.matrix[x,],1,var)
step 3: however, when i type in variableprobe, it gives me this.
1 21.58257457
step 4: I need the code to output this:
ProbeID Variance
1 224588_at 21.58257457
What do i need to do to modify the code to give me better description like
the one above?
thank.
Keizer
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