search for: johannesson

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2004 Apr 14
2
attaching data.frame/list within a function
..."package:methods" "package:stats" [5] "package:graphics" "package:utils" "Autoloads" "package:base" [1] 0 > Thanks, Gardar ___________________________________________________________________ Gardar Johannesson Lawrence Livermore National Laboratory 7000 East Avenue, L-229 Livermore, CA 94550 johannesson1@llnl.gov Tel: (925) 422-3901, Fax: (925) 422-4141 [[alternative HTML version deleted]]
2002 Nov 27
1
problem with attr()
...ibute, however, if I don't create the 'n.ch' attribute, it finds it! That is: > tmp <- list(id=1) > attr(tmp,'n') NULL > attr(tmp,'n') <- 1 > attr(tmp,'n') [1] 1 > -- _________________________________________________________ Gardar Johannesson Department of Statistics The Ohio State University 304E Cockins Hall, 1958 Neil Ave. Columbus, OH 43210 Email: gardar at stat.ohio-state.edu Tel: (614) 292-1567 Web: www.stat.ohio-state.edu/~gardar Fax: (614) 292-2096 _________________________________________________________...
2001 Nov 26
2
R not giving memory back to system?
...RES STATE TIME CPU COMMAND 18068 gardar 1 32 0 244M 241M sleep 0:14 0.02% R.bin My question is; are gc() and unix top telling the same memory story? If not, which one is not getting it right? Cheers, Gardar ________________________________________________________ Gardar Johannesson Department of Statistics Ohio State University 304E Cockins Hall, 1958 Neil Av. Columbus, OH 43210 _________________________________________________________ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hor...
2003 Aug 24
1
regression constraints (again)
...have set the problem up with solve.QP and just the non-negativity constraints along the lines of: y as the data vector X as the design matrix D <- t(X) %*% X d <- t(t(y) %*% X) A <- diag(ncol(X)) b <- rep(0,ncol(X)) fit <- solve.QP(D=D,d=d,A=t(A),b=b,meq=0) (as per Gardar Johannesson '01) When I try to add the extra constraint that sum(weights)=1 I get errors owing to incompatibility of matrices. I add the constraint by putting an extra column of all ones to A and setting meq=1. I can work round it I think, by using an intercept and using the extra column on the matri...
2007 Apr 24
1
Matrix: how to re-use the symbolic Cholesky factorization?
...n this case one does only need to carry out the symbolic factorization _once_ and then follow that up with a numerical factorization for each of the Q_i's (re-using the general symbolic factorization each time). Does anybody know if this is possible using the Matrix package? Thanks, Gardar Johannesson Lawrence Livermore National Laboratory
2001 Nov 20
0
Summary: non-negative least squares
Thank you Brian Ripley, Gardar Johannesson, and Marcel Wolbers for your prompt and friendly help! I will share any further learnings as I move through these suggestions. -Bob Abugov Brian Ripley wrote: I just use optim() on the sum of squares with non-negativity constraints. That did not exist in 1999. Gardar Johannesson wrote: You...
2000 Jun 22
1
'pausing' in R
...e efficiently, that is, not using as much CPU time as in the above case? Thanks, Gardar I'm using version 1.1.0 on: Machine hardware: sun4u OS version: 5.7 Processor type: sparc Hardware: SUNW,Ultra-250 _________________________________________________________ Gardar Johannesson Home Addr. Department of Statistics 605 Dennison, #3 Ohio State University Columbus, OH 43215 305A Cockins Hall, 1958 Neil Av. Tel: 614-531-0102 Columbus, OH 43210 ( cellular ) Tel: 614-292-6038 Fax: 614-292-2096 e-mail: gardar a...
2001 Dec 20
1
optimizing R-1.4.0 build on Solaris; a show-and-tell storry
...c user CPU time 4) The result of system.time(B <- A %*% A) where A is 500x500 matrix. R-1.4.0-def: 18.83 sec user CPU time R-1.4.0-opt: 0.37 sec user CPU time I hope this will be of use to somebody... cheers, Gardar _________________________________________________________ Gardar Johannesson Department of Statistics Ohio State University 304E Cockins Hall, 1958 Neil Av. Columbus, OH 43210 Tel: 614-292-1567 Fax: 614-292-2096 e-mail: gardar at stat.ohio-state.edu WWW: www.stat.ohio-state.edu _________________________________________________________ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-...
2002 Sep 18
1
problem with make fullcheck on Sparc Solaris 8
...al error: Command failed for target `test-Recommended-Examples' Current working directory /home/gardar/local/src/R-1.6.0/tests *** Error code 1 make: Fatal error: Command failed for target `fullcheck' -- _________________________________________________________ Gardar Johannesson Department of Statistics The Ohio State University 304E Cockins Hall, 1958 Neil Ave. Columbus, OH 43210 Email: gardar@stat.ohio-state.edu Tel: (614) 292-1567 Web: www.stat.ohio-state.edu/~gardar Fax: (614) 292-2096 _________________________________________________________ -.-...
2002 Sep 20
0
problem with make on sparc solaris 8 ( R-1.6.0beta_2002-09-18.tar.gz)
...C="cc" CFLAGS="-xO5 -xlibmil -dalign" F77="f95" FFLAGS="-xO5 -xlibmil -dalign" CXX="CC" CXXFLAGS="-xO5 -xlibmil -dalign" and I'm using the solaris make program... -- _________________________________________________________ Gardar Johannesson Department of Statistics The Ohio State University 304E Cockins Hall, 1958 Neil Ave. Columbus, OH 43210 Email: gardar@stat.ohio-state.edu Tel: (614) 292-1567 Web: www.stat.ohio-state.edu/~gardar Fax: (614) 292-2096 _________________________________________________________ -.-...
2005 Jan 04
2
x11 is not available
Dear list, I have problems installing R-2.0.1 on SUSE Linux 9.2. I used the following commands in order install R in /usr/local ./configure --with x11 --with-readline make make install When starting R and trying to display a plot on the X-window system output is written to a postscript file. When I try to run x11 with >x11() Error in X11(): X11 is not available. I do have a running
2003 Oct 16
1
Improving efficiency in "outer"-like calculation
Hello, I am doing mcmc=10000 simulations from a posterior distribution of the parameters of a mixture of K=6 normal densities. I have mcmc by K matrices simMeans, simVars and simWeights containing the simulation output: one row for each simulation, one column for each normal component of the mixture. One thing I would like to do is a plot of the posterior predictive density. In order to do that
2000 Jun 22
1
Summary: 'pausing' in R (fwd)
...se). We do plan to have a version of this for all platforms in due course. ################## By the way; is it 'required' to write a summary of responses and post to r-help? (e.g., as on the s-news list.) Thanks, Gardar _________________________________________________________ Gardar Johannesson Home Addr. Department of Statistics 605 Dennison, #3 Ohio State University Columbus, OH 43215 305A Cockins Hall, 1958 Neil Av. Tel: 614-531-0102 Columbus, OH 43210 ( cellular ) Tel: 614-292-6038 Fax: 614-292-2096 e-mail: gardar a...
2002 Sep 10
9
R 1.6.0 beta
R 1.6.0 has gone into final feature freeze as of today. As a new feature, we'll make interim beta versions available via ftp://cran.us.r-project.org/pub/R/src/base alias http://cran.us.r-project.org/src/base (filename R-1.6.0beta_*.tar.gz, where * is the creation date). If you want to help ensure that the final 1.6.0 works satisfactorily on *your* platform, it might be a good idea to