This looks like a question for the package maintainer (as the posting guide said), as was the one you referred to. Please bear in mind
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. Anyone who is going to be able to help will need such an example. It seems that a reply like this needs to go on the archive for future reference. On Thu, 2 Aug 2007, Jake Michaelson wrote: > I'm having the exact problem outlined in a previous post from 2005 - > unfortunately the post was never answered: > > http://tolstoy.newcastle.edu.au/R/help/05/10/15055.html > > When running: > > lm2=lars(x2,y,type="lasso",use.Gram=F) > > I get an error: > > Error in if (zmin < gamhat) { : missing value where TRUE/FALSE needed > > ...when running lasso via lars() on a 67x3795 set of predictors. I hacked > the lars() function to print out the zmin, gamhat, and also z1 values (used > to calculate zmin) - it seems that the error comes up during the lasso > process when all the z1's are negative - unfortunately I have no idea what > this means. This leads to both zmin and gamhat being NA. The error can be > worked around by forcing max.steps to some low value, but this isn't an > ideal solution. > > I hope this post won't suffer the same fate as the previous one on the same > topic. If I can provide any more useful information please let me know. > > Thanks, > > Jake > >> sessionInfo() > R version 2.5.0 (2007-04-23) > i686-pc-linux-gnu > > locale: > LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C > > attached base packages: > [1] "stats" "graphics" "grDevices" "utils" "datasets" "methods" > [7] "base" > > other attached packages: > lars randomForest corpcor cairoDevice > "0.9-7" "4.5-18" "1.4.5" "2.3" > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch 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. > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch 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.
