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Hi all, I have read a data matrix of 304 x 404 using read.table. When I am trying to name the colnames, with first try colnames(L5)<-list(2:305), I keep getting error message such as Error in "colnames<-"(`*tmp*`, value = list(c(2, 3, 4, 5, 6, 7, 8, 9, : length of 'dimnames' [2] not equal to array extent and I don't know why. But, if I look at