search for: demirpresgenes

...nyway, I got round the problem by using 'aggregate' instead of converting to a list and then tapply to sum values of metric. Probably more efficient as well. Thanks for the help offered. My function now looks like this (for the record!) and behaves as it should. makeMetric <- function(deMirPresGenes, deMirs){ ??? #need to match position of each miR in deMirPresGenes with its FC to form a vector of FC in correct order ??? ??? fcVector <- as.numeric(with (deMirs, FC[match(deMirPresGenes[,4], Probe)] ) ) ??? #multiply fc by context score for each interaction??? ? ? metric <- fcVector *...

Hello List I'm moving this over from the bioC list as, although the problem I'm working on is biological, the current bottle neck is my poor understanding of R. I wonder if someone would help me with the following function. cumulMetric <- function(deMirPresGenes, deMirs){ ??? #need to match position of each miR in deMirPresGenes with its FC to form a vector of FC in correct order ? ? fc <- deMirs ? ? fcVector <- as.numeric(with (fc, FC[match(deMirPresGenes[,4], Probe)] ) ) ? ? #multiply fc by context score for each interaction ? ? metric <- fcVec...