search for: gmid

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2006 Feb 01
1
cor/group by???
Can someone help me calculate correlations for grouped values? Heres what my first few line of data look like: > head(cmexpr) LLID GMID CEXPR MEXPR 1 1005 10831 2.057462 -0.08486 2 1005 10831 2.057515 -0.08486 3 1005 10831 2.057462 0.01209 4 1005 10831 2.057515 0.01209 5 1005 10836 2.050980 0.17237 6 1005 10836 2.018576 0.17237 LLID is gene id, GMID is cell line id, the EXPR columns are gene expression is two different m...