Re: [R] SNP Tables

Hi Jim, Here is one way: # data x <- structure(list(category = structure(c(1L, 1L, 1L, 2L, 2L, 2L, 1L, 1L, 2L), .Label = c("case", "control"), class = "factor"), SNP1 = c(1L, 0L, 1L, 0L, 1L, 0L, 1L, 0L, 1L), SNP2 = c(0L, 1L, 2L, 1L, 2L, 0L, 0L, 1L, 0L), SNP3 = c(2L, 1L, 2L, 0L, 1L, 0L

Re: [R] SNP Tables

Hello, I have indicators for the present of absent of a snps in columns and the categorey (case control column). I would like to extract ONLY the tables and the indices (SNPS) that give me 2 x 3 tables. Some gives 2x 2 tables when one of the allelle is missing. The data look like the matrix snpmat