similar to: Help on merging without a common variable

Dear group, I am trying to prepare a NONMEM friendly dataset for population PK analysis. My patient IDs are 10 digit long and NONMEM is losing precison and rouding the last couple of digits. I need to generate unique Patient IDs fromt he current 10-digit IDs. Ihave total 250 subjects so I appreciate if anybody can suggest me a way to code this in R. Regards, Ayyappa [[alternative HTML

Dear Group, I am working with a large dataset where I need to select for each unique id the the unique lastpk row. Here is a sample subject: id wtdt wt lastpk 64050256 2010-09-18 275 2010-09-16 64050256 2010-09-19 277 2010-09-18 64050256 2010-09-20 272 2010-09-18 64050256 2010-09-21 277 2010-09-18 I want the result as:

Dear group, I need help on two problems: 1. I am trying to plot density plots for each individual in 8 occasions. I can do this by subject wiht the code below: par(mfrow=c(4,2)) plot(density(all8scenarios$SIMCONC[all8scenarios$ID==1&all8scenarios$WSEQ==0])) plot(density(all8scenarios$SIMCONC[all8scenarios$ID==1&all8scenarios$WSEQ==1]))

Dear R group, I am trying to plot uisng a for loop. Here is the script: for (i in unique(cfn$ID)){ plot(cfn$TIME[cfn$ID==i],cfn$DV[cfn$ID==i],pch=16)} I could access only the last plot of the series and cannot go back to see all the plots. I appreciate your help in resolving this issue and also please suggest how I can export the plots as a pdf or other format files for publication purposes.

Dear Group, I have a problem with time date formatting. I have Date and Time in different columns in a .csv file and want to have a column with Date and Time together. I could format the date into the right mode using strptime and as.Date functions. I am not able to do that with TIME column. I appreciate your help in solving this issue. Currently the TIME column is in character mode.

Dear Group, I have the following dataset: ID REPI DV CONC SS 1 1 156.84 116 0 1 2 146.56 116 0 1 3 115.13 116 0 1 4 207.81 116 0 1 5 129.53 116 0 1 6 151.48 116 0 1 7 158.95 116 0 1 8 192.37 116 0 1 9 32.97 116 0 1 10 151.66 116 0 I want to calculate the percentile of each CONC within ID=i and add as a column

Hi I am having some problems running a covariate analysis with my colleage using R with the NonMem program we are using for a graduate school project. R and NonMem run fine without adding in the covariates, but the program is giving us a problem when the covariate analysis is added. We think the problem is with the R code to run the covariate data analysis. We have the control stream, R code

Hello, I have made an R script that prepares a NONMEM dataset and I would like to start the NONMEM run right after the dataset is ready. I am using windows XP, R 2.9.1 and NONMEM 6. I have prepared a run.bat file that looks like this: ---------------------------------------- call K:\nmvi\NMdirectories.bat call K:\nmvi\nmfe6 "path\control.txt" "path\output.txt"

Dear R-users, Do you know if we can use the function lme in R for log-normal distribution of parameters as used in Nonmem ? theta=theta0*exp(eta) In our model, the parameters follow the log-normal distribution so it's not reasonable to deal with normal distribution which gives us negative values in simulation Thanks for your help, Thu [[alternative HTML version deleted]]

Greetings, I used latex type code in my Rd files. The pdf version using R CMD Rd2dvi --output=PKtools.pdf --pdf --title="PKtools" PKtools man came out quite nice. However, my current HTML version does not tex the latex so there is latex code in the files and looks bad. example problem code: AIC$_c$ or \begin{itemize} \item NLME: \begin{itemize} \item population level:

All, I am constructing a pharmacokinetic dataset and have hit a snag. The dataset can be demonstrated in the following way: myData <- data.frame( evid = c(1, 0, 0, 0, 1, 0, 1, 1, 1, 0), time = 1:10, last.dose.time = c(1, 1, 1, 1, 5, 5, 7, 8, 9, 9) ) The evid field is an indicator variable for whether the associated observation is a dosing record (when it takes value 1) or an

Thanks for the very prompt reply. I''ve been googling already for a few days now trying to understand how bandwidth management works. I came to understand that TC is a utility that I can use to shape up my local network bandwidth consumption. Im hoping I will be guided here through. Here are my questions: 1. Is TC works on an interface of a physical device only? 2. My objective is to

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Ok, if I missed something in the wiki please point me there with the correct search terms. Asterisk 1.0.7 (AAH really) 4 co lines from Bellsouth into a Diguim T400P. Polycom 501 x 4 on the desktops. My problem is on calls to or from the CO I hear a "pinging" (thing sonar ping in a submarine) every 12 seconds. You can set your watch to it. COuld this be a "call recording in

Hi Everyone: I am running NONMEM from R using following command. shell("nmfe72 TOT_EST_DOSE2.CTL DOSE2.OUT",wait=T) This command runs NONMEM successfully but does not show the progress. Usually, intermediate outputs are displayed on CMD console when this same command is run from CMD console. How can I view the intermediate outputs while running NONMEM from R?

This is the basic sceleton which will be fleshed out by individiual extensions. Signed-off-by: Vladislav Yasevich <vyasevic at redhat.com> --- drivers/net/virtio_net.c | 21 +++++++++++++++++++++ include/linux/virtio_net.h | 12 ++++++++++++ include/uapi/linux/virtio_net.h | 11 +++++++++++ 3 files changed, 44 insertions(+) diff --git a/drivers/net/virtio_net.c

Hi, the following pieces of mail came by on BugTraq. It appears that Apache (1.2.5 and 1.2.6 tested, 1.3 is vulnerable according to Ben Laurie [Apache member]) doesn''t handle the case, when there are a lot (say 10000) of "User-Agent:"-headers. (other headers could also work!). An exploit with source-code was posted on BugTraq. excerpts from the mail by

Mango Solutions, providers of S-PLUS and R consulting, development and Training Services, are looking for consultants to join their UK-based technical team. We are looking for highly motivated individuals to work in a customer-focused environment. This is a unique opportunity to develop within a dynamic company which has been expanding rapidly and profitably since it's inception in 2002.

Heya, we are seeing some strange issues with IMAP ID command using latest Roundcube builds on dovecot 2.2.10 responding "Input buffer full, aborting". Roundcube webmail connects to IMAP server and issues ID command first with some long arguments to ID command, however shorter than 1024 octets, which are specified in RFC2971 for ID IMAP extension. The situation is easily

Dear all, at the Division of Clinical Pharmacology at the University of Cape Town (South Africa) we are looking for highly motivated science/engineering PhD graduates to join our pharmacometrics group as a post-doctoral fellow. Pharmacometrics is an emerging discipline that applies mathematical modelling and simulation to pharmacology, aiding the interpretation of data from clinical trials,