The actual dataframe that I have imported on R is Death adp 1 0 58.00 2 1 18.70 3 0 21.75 4 1 25.35 5 0 20.55 6 1 28.05 7 0 50.15 8 1 31.25 9 1 32.75 10 1 28.95 11 1 15.10 12 0 45.05 13 1 19.95 14 0 32.95 15 0 22.60 16 0 10.75 17 0 41.80 18 0 27.05 19 1 26.25 20 0 34.40 21 1 24.65 22 1 42.30 23 0 19.80 24 0 47.20 25 1 25.90 26 1 30.70 27 1 28.60 28 1 25.80 29 0 27.05 30 0 14.40 31 0 28.40 32 0 48.45 33 0 17.85 34 1 30.85 35 1 24.75 36 0 16.20 37 0 34.10 38 0 12.00 39 0 24.40 40 0 69.50 41 1 36.45 42 0 41.55 43 1 17.80 44 0 40.10 45 1 21.35 46 1 22.90 47 0 63.80 48 1 45.80 49 0 70.65 50 0 54.00 51 0 26.90 52 0 50.75 53 0 28.20 54 1 23.25 55 1 18.10 56 0 29.20 57 1 52.80 58 0 46.60 59 1 32.55 60 0 74.50
The R command that I actually use is > rcspline.plot ("adp", "Death", model="logistic", nk=3, knots=NULL) and the >rcspline.eval ("adp", nk=3, inclx=FALSE, knots.only=FALSE, type="ordinary") For both the commands I receive the same message : " fewer than 6 non missing observations". George -- View this message in context: http://r.789695.n4.nabble.com/rcspline-plot-query-tp3590233p3591679.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.