[BioC] How to create a phenodata

[Thileepan [guest]]

Hi,

  I have a dataset GSE37859 which consist of 3 groups namely "NSC","iNSC","MEF".Now I have to create phenodata for the same. I created a separate txt file describing group of each samples. Now I wanted to create pData for my raw data. Can anyone help me?

 -- output of sessionInfo(): 

> phenodata #phenodata created in a text file and read inR 
          V1    V2
1  GSM929093 iNSC1
2  GSM929094 iNSC1
3  GSM929095 iNSC1
4  GSM929096 iNSC2
5  GSM929097 iNSC2
6  GSM929098 iNSC2
7  GSM929099   NSC
8  GSM929100   NSC
9  GSM929101   NSC
10 GSM929102   MEF
11 GSM929103   MEF
12 GSM929104   MEF

#This what I get when I give pData(data.raw)
> pData(data.raw)
                              sample
GSM929093_01.iNSC1.1.CEL.gz        1
GSM929094_02.iNSC1.2.CEL.gz        2
GSM929095_03.iNSC1.3.CEL.gz        3
GSM929096_04.iNSC2.1.CEL.gz        4
GSM929097_05.iNSC2.2.CEL.gz        5
GSM929098_06.iNSC2.3.CEL.gz        6
GSM929099_07.WT.NSC.1.CEL.gz       7
GSM929100_08.WT.NSC.2.CEL.gz       8
GSM929101_09.WT.NSC.3.CEL.gz       9
GSM929102_10.WT.MEFs.1.CEL.gz     10
GSM929103_11.WT.MEFs.3.CEL.gz     11
GSM929104_12.WT.MEFs.5.CEL.gz     12




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