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2004 Apr 12
1
Very large matrices for very large genome
Hello, I am using R to look at whole-genome gene expression data. This means about 27,000 genes, each with a vector of numbers reflecting expression at different tissues and times. I need to do an all against all co-expression calculation (basically, just calculate Pearson's r for every gene-gene pair). I try to store the result of such a thing in a 27000x27000 matrix, but r seems not to like