Re: [R] CHAID in R

well, are you sure if party() can implement chaid? i doubt if chaid is being implemented in any R package. https://r-forge.r-project.org/projects/chaid/ -- Max __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help

Re: [R] problem plotting with ggplot2

Remove the y=c2 from your histogram plot. ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,

Re: [R] std.error

On Aug 28, 2009, at 2:50 PM, Mcdonald, Grant wrote: dear sir, i am trying to calculate the standard error of my data (x), The term standard error is generally applied to a parameter estimate such as a regression coefficient. You may be looking for the function to retrun the standard

Re: [R] CHAID in R

i couldn't find it on CRAN. On Fri, Aug 28, 2009 at 5:16 PM, Max Kuhn mxk...@gmail.com wrote: well, are you sure if party() can implement chaid? i doubt if chaid is being implemented in any R package. https://r-forge.r-project.org/projects/chaid/ -- Max --

Re: [R] RODBC: how to set the data-source?

Dumblauskas, Jerry jerry.dumblauskas at credit-suisse.com writes: OK Is your PostGres server on the same Linux box you are running R on? Sample values Server = 169.49.30.69 (localhost host means you are on the same box) yes, all is local here. Port= 2700 (make

Re: [R] how to set crontab for updating the repositories?

Sukhbir, The recommended rsync commands for mirroring the Bioconductor repositories are given at http://bioconductor.org/download/mirrors/mirror-howto.html Cheers, Patrick Paul Hiemstra wrote: Sukhbir Rattan wrote: Hi, I have downloaded around 60GB package repositories of bioconductor

[R] how to explain the interaction terms regarding treatment contrast of lm model

Dear list, I am confused on how to explain the interaction term in the context of treatment contrast. for example, I have an data frame as below: sub group val 1a group1 3.685625 2a group1 3.407445 3a group1 4.040920 4a group1 2.890875 5b group1 3.853280 6b group1

Re: [R] Plotmath, sweave and lattice graphics interaction problem

Hi Gavin I am running on windows and have no problem R version 2.9.2 (2009-08-24) i386-pc-mingw32 locale: LC_COLLATE=English_Australia.1252;LC_CTYPE=English_Australia.1252;LC_MONETARY=English_Australia.1252;LC_NUMERIC=C;LC_TIME=English_Australia.1252 attached base packages: [1] datasets

Re: [R] adding factor scores back to an incomplete dataset...

Thanks, Prof Spector. Your first solution works well for me. Phil Spector wrote: David - Here's the easiest way I've been able to come up with. I'll provide some sample data to make things clearer (hint, hint): dat = data.frame(matrix(rnorm(100),20,5)) dat[3,4] = NA dat[12,3] = NA scrs =

Re: [R] how to explain the interaction terms regarding treatmentcontrast of lm model

The intercept is group=1, sub=a, The interaction between sub=b and group=2 implies that both sub=b and group=2 direct effects are included. That is, with the direct effects only you are now at: intercept+group2+subb, which means the intercept (group1 and sub=a) + the average difference between

[R] how to generate a random correlation matrix with restrictions

Hi, How can I generate a random 100x100 correlation matrix, R={r_ij}, where about 10% of r_ij are greater than 0.9 Thanks in advance. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

Re: [R] how to generate a random correlation matrix with restrictions

R - matrix(runif(1), ncol=100) hth, Kingsford Jones On Fri, Aug 28, 2009 at 7:26 PM, Ning Mapnin...@gmail.com wrote: Hi, How can I generate a random 100x100 correlation matrix, R={r_ij}, where about 10% of r_ij are greater than 0.9 Thanks in advance.

[R] Rcmdr installalation under Viata gives a warning. Do I need to do anything?

Windows Vista R 2.9.1 When trying to install Rcmdr I get the message shown below. What does it mean, do I need to do anything? The downloaded packages are in C:\Users\John Sorkin\AppData\Local\Temp\RtmpRCLbhe\downloaded_packages updating HTML package descriptions Warning message: In

Re: [R] how to generate a random correlation matrix with restrictions

Ahh -- Mark Leeds just pointed out off-list that it was supposed to be a correlation matrix. Perhaps R - matrix(runif(1), ncol=100) R - (R * lower.tri(R)) + t(R * lower.tri(R)) diag(R) - 1 These are of course uniformly distributed positive correlations. Kingsford On Fri, Aug 28, 2009 at

Re: [R] how to generate a random correlation matrix with restrictions

Hi Kingsford, There is more structure to a correlation matrix than that meets the eye! Your method will produce a matrix R that looks like a correlation matrix, but beware - it is an impostor! You can obtain a valid correlation matrix, Q, from the impostor R by using the `nearPD' function in

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