Hi, I have a txt.file with 32 columns and 32 rows (below) that I want R to treat as a distance matrix. 1 2 3 4... 1 NA 2 0.4 NA 3 0.3 0.7 NA 4 0.9 0.6 0.1 NA . . . How can I do this? Conny -- View this message in context: http://r.789695.n4.nabble.com/Import-matrix-tp4700867.html Sent from the datatable-help mailing list archive at Nabble.com.