Dear List members I am using the regsubsets function to select a few predictor variables using Mallow's Cp: > sel.proc.regsub.full <- regsubsets(CO2 ~ v + log(v) + v.max + sd.v + tad + no.stops.km + av.stop.T + a + sd.a + a.max + d + sd.d + d.max + RPA + P + perc.stop.T + perc.a.T + perc.d.T + RPS + RPSS + sd.P.acc + P.dec + da.acc.1 + RMSACC + RDI + RPSI + P.acc + cov.v + cov.a + cov.d + sd.P + sd.v.run + RCS + T + mass.fin, data = DATASET, weights = count, nbest = 10, nvmax = 35, method = "exhaustive") I do however encounter the following warning message which I do not understand:
> Reordering variables and trying again: Warning messages: 1: 14 linear dependencies found in: leaps.setup(x, y, wt = wt, nbest = nbest, nvmax = nvmax, force.in = force.in, 2: XHAUST returned error code -999 in: leaps.exhaustive(a, really.big Could anyone please direct me towards the possible problem and its solution? The DATASET consists of 75 datapoints, 35 numeric predictor variables and the weights vector is given by: > count [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Many thanks, Robin Smit This e-mail and its contents are subject to the DISCLAIMER at http://www.tno.nl/disclaimer/email.html [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
