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exp1
2011 Sep 21
1
Problem indexing a factor variable
Hi,
I have a dataframe "gexp_1" with 115 rows of samples and 27000 columns of gene expression measurements with each column corresponding to one gene. I now have a smaller vector of genes "tp" for which I need to pull out the data form the data frame.
# first gene from the list with 16 genes
x <- tp[1,]
x
[1...