[R] optim hangs without warnings or error

/optim_arguments.RData I appreciate any help. Cheers, Katja > sessionInfo() R version 2.15.3 (2013-03-01) Platform: x86_64-pc-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UT

[R] Problems with stepAIC

Dear help community, I'm a R-beginner and use it for my master thesis. I've got a mixed model and want to analyse it with lme. There are a lot Cofactors that coult be relevant. To extract the important ones I want to do the stepAIC, but always get an error warning. Structure of my data: data.fram

[R] transform RTs

Hello, I'm trying to transform reaction times which are not normally distributed to an ex gaussian or an inverse gaussian distribution, but I don't really know how to use the exGAUS() function. Can someone show me a script in which data has been transformed? Thanks in advance k [[alter

[R] parLapply within a function

nce in the memory. But if I use the same call within another function, the object seems to be multiplied to the nodes. We conclude this from the longer run time and a significant higher memory usage. Any help is appreciated! :-) Cheers, Katja Hebestreit Some version information: > sessionInf

[R] Boundary correction for kernel density estimation

. An overspill of the bounded support is unappropriate as well. Do anyone knows a boundary correction method implmented in R? I did much research but the correction methods I found are regarding survival or spatial data. Thanks a lot for any hint! Cheers, Katja

[R] densities greater than 1 for values within an (0,1) intervall

1. Where is the problem and how may I solve it? Does R have problems in calculating distributions of variables within an intervall of 0 and 1? Best, Katja __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do

[R] Calculate Volume in a PCA

Hi, my data frame consist of 8 Variables and 120 000 observations. With those datas I am running a PCA and after I want to calculate the Volume of the PCA-cloud of certain subsets of my data. Does anyone have an idea about a function that can do this? Thanks [[alternative HTML