search for: sample42

...encies. Essentially i have a matrix of 200 rows (df) like this Name,Condition,rs1385699_X,rs6625163_X,rs962458_X,Rs4658627_1, sample01,Case,1,1,1,-1 sample02,Control,1,1,1,1 sample06,Control,1,-1,1,0 sample10,Case,1,1,1,0 sample11,Control,1,1,1,1 sample24,Control,-1,-1,1,0 sample29,Control,1,-1,1,0 sample42,Case,-1,-1,1,0 sample64,Case,-1,1,1,0 .... I'm interested to mantain in my subsample the same frequencies of those observed for the 1 value in each column I approached the problem with sample() function mysample<-df[sample(1:nrow(df),100,replace=F),] Then I tested that the frequencies of e...