Re: [R] Variance Calculation in R

From: Keizer_71 <christophe.lo_at_gmail.com>
Date: Sun, 02 Mar 2008 09:44:32 -0800 (PST)

sorry...in step 4-i need the R code to output in this format when i export to excel.

	ProbeID	    Variance	
1	224588_at   21.58257457

thanks

Keizer_71 wrote:
>
> 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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Received on Sun 02 Mar 2008 - 17:46:32 GMT

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