danielepippo wrote: > > I'm building a matrix in R with a cycle for like this: > pp_ris2=matrix(NA,6,6) > for(i in 0:6){ > ..... > R is not like c, indexing starts with 1. Dieter -- View this message in context: http://r.789695.n4.nabble.com/Matrix-in-R-tp3312748p3312764.html Sent from the R help mailing list archive at Nabble.com.