Dear all, I have a problem with the knn's function in EMV package. When I try to do like the example given in help Html it works, but with my own matrix, R returns the following message : > library (EMV) > temp [1:3, 1:10] V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 3 -0.03 -0.29 0.12 -0.05 -0.12 0.02 -0.17 0.09 0.29 -0.04 4 -0.25 -0.36 -0.29 -0.21 -0.15 -0.15 NA -0.13 0.16 -0.09 6 -0.40 -0.37 -0.39 NA -0.13 -0.22 0.01 -0.15 -0.22 NA > matcomplete <- knn(temp,k=15) Error in knn(temp, k = 15) : No rows without missing values My matrix has actually 14% of NA, which are recognized by R as NA (summary function). My matrix (temp) is in a numeric mode and has dimension of 3169*160 Is anybody has the same problem or knows a solution? Thanks. Alice.