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...ty to communicate statistical ideas to non-statisticians. Demonstrated ability to work independently. Proficiency in use of R for statistical computing. If interested, contact Warren Thompson at warren.thompson at adeccona.com or call (919) 484-8008, ext. 105. Julie Leonard Computational Biologist Syngenta Biotechnology Inc. (919) 281-7449 julie.leonard at syngenta.com message may contain confidential information. If you are not the designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited. [[alternative HTML...

...e monitor initialization procedure explicitly? The /var/tmp/foo.so.profile file is never created. I'm using R 1.6.2 and I have the same problem under both SunOS 5.8 and under Red Hat Linux 7.3 with 2.4.18-openmosix4smp kernel. Has anyone had any success with this sort of profiling? Rex Dwyer Syngenta Biotechnology Inc. Research Triangle Park, North Carolina

Hi R users, I request members of the R community to consider filling a short survey regarding the use of R. The survey can be found at http://goo.gl/jw1ig Please accept my apologies for posting here for a non-technical reason. The data collected will be suitably analyzed and I'll post a link to the results in the coming weeks. Thank you all for your interest and for sharing your R usage

Hello, I have a perl program which produces the input. Instead of print it to a file then let R read the file, I want to let R to read the input directly from the perl output, I am using a PERL IPC::open2 module for this, local (*Read,*Writer); $pid = open2(\*Read, \*Writer, "R --no-save --slave< my.R") #input to R for(){ print Writer data; } close Writer; #R output

deaRs, I want to build a covariance matrix out of the data from a binary file, that I can read in chunk by chunk, with each chunk containing a single observation vector X. I wonder how to do that most efficiently, avoiding the calculation of the full symmetric matrices XX'. The trivial non-optimal approach boils down to something like: Q <- matrix(rnorm(100000),ncol=200) M <-

I am trying to construct a data set with some sequences for example: a = seq(0,1,0.1) m = matrix(nrow = 1331, ncol = 3) m[,1] = rep(a,121) m[,2] = rep(a,11,each = 11) m[,3] = rep(a,1,each = 121) I realize that there may be better ways of doing this, but this approach demonstrates the problem I'm having. I then want to get the sum of the rows and delete any row with a sum of greater than 1.

Hello, all, I have a question regarding data input. For example: I have a file like this Group exp value 001 1 1 5 002 1 2 4 003 1 3 4 004 2 1 4 005 2 1 4 006 3 2 3 007 3 4 5 008 3 4 5 009 3 5 6 I read it using f<-read.table("infile") we have 3 groups here, group1 have 3 exps group 2 havs 2 exps group 3 has 4 exps After I read the file,

...drive on the client machine. I am not a Samba expert, but should Unix permissions be getting zeroed out after trying to update a file on a Samba share? Thanks for any help! Ken ******************************************* Kenneth Leung IT Administrator Torrey Mesa Research Institute kenneth.leung@syngenta.com (858) 812-1223 *******************************************

Hi, all, I'd like to find one or more changepoints in a dataset eg for data like 0.9 1 0.8 0.8 0.85 0.3 0.9 0.9 0.9 1.1 0.3 is unlikely a changepoint but for data like 0.9 1 0.8 0.8 0.85 0.3 0.2 0.2 0.1 0.2 0.3 0.3 is a change point I am wondering is there any function can do changepoint analysis? Ying Fan

...entifying Rules for Making Better Small Molecules Jing Wang, Cengent Therapeutics Improving the Ability to Predict Drug-Like Compounds from Virtual Screening Using CART Donovan Chin, Biogen The Importance of CART and MARS in Environmental Fate and Risk Assessment for Pesticides Cecil Dharmasri, Syngenta Crop.

Hello! I am wondering if it's possible to run - in sequence - code that is stored in several R scripts. For example: Script in the file "code1.r" contains the code: a = 3; b = 5; c = a + b Script in the file "code2.r" contains the code: d = 10; e = d - c Script in the file "code3.r" contains the code: result=e/a I understand that I could write those 3 scripts

Hi, all, I have a little problem to solve. I'd like to collapse rows which are next to each other but have same value to one row. The following is an example. say x is a data frame like: X1 X2 X3 X4 X5 a 1 0 0 0 1 b 1 0 1 0 1 c 1 0 0 0 1 d 1 0 0 0 1 e 1 0 0 0 1 f 1 1 0 0 1 g 1 1 0 0 1 notice that a, c,d,e are the same. since c,d,e are next to each