Re: [R] average columns of data frame corresponding to replicates

try this: > myData sample1.id1 sample1.id2 sample2.id1 sample1.id3 sample3.id1 sample1.id4 sample2.id2 11 2 2 1 1 1 1 21 2 2 2 1 2 1 31 2

[R] average columns of data frame corresponding to replicates

Hi Group, I have a data frame below. Within this data frame there are samples (columns) that are measured more than once. Samples are indicated by "idx". So "id1" is present in columns 1, 3, and 5. Not every id is repeated. I would like to create a new data frame so that the repeated ids are av