Hello, I would like to use the simple matching coefficient in R to compare genotypic data from two years (there are some inconsistencies in the genotype notations in the 2 years and I want to find out the error). Is there a R code I could use? How does my matrix needs to look like? I have 50 genotypes and each genotype is genotyped with 780 markers for two different years. So I need to compare the markers for genotype 1 form year 1 versus year 2, the markers from genotype 2 from year 1 to year 2 and so on, so I can calculate the matching coefficients. Is there a R code for that already? Thank you very much in advance, Lisa-Marie [[alternative HTML version deleted]]