Can anybody tell me what the following error means in microarray R script?

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Komal Kaushik

thnx for reply Mr. Jochen Wilhelm . But in that array only n=1 is there..Can I use same type of sample data from another array data with same platform and consider them n=2 or 3?

ok sir..actually I am completely a new person to analyse microarray . Can you please suggest me a suitable method for meta- analysis. Shall I take CEL files from all interest arrays and then normalize them with RMA or gcRMA ? or first I shall normalize them independently and then club them together to find differentially expressed genes ? and how to see that differences in two different arrays are correlated or not?

Thank sir for your answere...Pls suggest me some good books.

ok Thank you Mr.Jochen Wilhelm