The various which(is.na) sort of things are fine, but this problem is just screaming to be solved with rle().
Just do rle(is.na(inc))$lengths[1]+1 > On Tue, Jun 23, 2009 at 11:00 AM, Alfredo Alessandrini <alfreale74 at gmail.com > > wrote: > > > Hi, > > > > I've a vector like this: > > > > > inc > > [1] NA NA NA NA NA NA NA > > [8] NA NA NA NA NA NA NA > > [15] NA NA NA NA NA NA NA > > [22] NA NA NA NA NA NA NA > > [29] NA NA NA NA NA NA NA > > [36] NA NA NA NA NA NA NA > > [43] NA NA NA NA NA NA NA > > [50] NA NA NA NA NA NA NA > > [57] NA NA NA NA NA NA NA > > [64] NA NA NA NA NA NA NA > > [71] NA NA NA NA NA NA NA > > [78] NA NA NA NA 13.095503 10.140119 7.989186 > > [85] 8.711888 7.201234 13.029250 14.430755 8.662832 8.810785 14.421302 > > [92] 7.614985 7.548091 9.843389 14.977402 20.875255 7.787543 2.005056 > > [99] 4.016916 3.601773 4.140390 7.241999 13.280794 18.038902 18.762169 > > > > I must obtain the position of first value of the vector... > > > > In this case is 82. > > > > > inc[82] > > [1] 13.09550 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
