[R] conditional dataframe search and find

After some processing... ct.df- data.frame(time,conc) ct.df gives time conc 1 0 164.495456 2 1 133.671185 3 2 108.622975 4 3 88.268468 5 4 71.728126 6 5 58.287225 7 6 47.364971 8 7 38.489403 9 8

[R] Calculation error

Dear Rxperts, Running the following code: === twlo=10; twhi=20; wt=154; vd=0.5; cl=0.046; tau=6; t=3; F=1; wtkg - wt/2.2 # convert lbs to kg vd.pt - wtkg * vd # compute weight-based vd (L) cl.pt - wtkg * cl #

[R] boxplot help

Dear Rexperts, I am trying to add a '+' identifying the mean in a boxplot using the following sizelist - split(size, grp) centers - boxplot(sizelist, style.bxp = att, medpch = o, ylab = Prostate Volume (cm3)) points(centers, unlist(lapply(sizelist, mean)), pch = +) But, I

[R] R programmer Ann Arbor Area

Dear Rs Our group is in need of an R programmer to work on Clinical Pharmacokinetics Project in Ann Arbor, Michigan Area. Interested R programmers send e-mail to: olina...@umich.edu Thanks:-) -- Oscar Oscar A. Linares, MD Translational Medicine Unit LaPlaisance Bay, Bolles Harbor Monroe,

[R] anova/factor

Dear Wiza[R]ds, I have the following data in a data.frame. I need to do an anova with multiple comparison but I don't know how to factor the groups for analysis. There are 3 groups, 1,2 and 3 labelled in column 1. Help appreciated with thanks in advance. Group SI Sif SG

[R] data manipulation

Dear Wiza[R]ds, I have a data.frame header that looks like this: v2FfaPre15v2FfaPre10v2FfaPre5v2Ffa2v2Ffa3v2Ffa4 I need it to look like this, 1510523 4 i.e., with v2FfaPre and v2Ffa stripped off Any suggestions, Thanks in advance! -- Oscar Oscar A.

[R] Plotting observed vs. Predicted values, change of symbols

Dear Wiz[R]ds, I am deeply grateful for the help from Duncan Murdoch, Gray Calhoun, and others. We are almost there. For whatever reason, I can't change the symbol from a circle to a triangle in the upright posture plots. Any ideas? I have included the problem in full. # tritiated

[R] Plot fitted vs observed values

Dear Wiza[R]ds, # I have the following experimentally observed data: csdata - data.frame( time=c(0,1,3,9,20), conc=c(638.697,395.69,199.00,141.58,112.16) ) # weighting resp means response wt.MM- function(resp, time,A1,a1,A2,a2) { pred - A1*exp(-a1*time)+A2*exp(-a2*time) (resp - pred) /

[R] Plotting observed vs. fitted values

Dear Wiza[R]ds, I am very grateful to Duncan Murdoch for his assistance with this problem. His help was invaluable. However, the problem has become a little more complicated for me. Now, in each plot, I need to plot the observed and fitted values of a supine and upright posture experiment. Here

[R] Switch Help

Dear Rexperts, Given, aar -function(command) { switch(command, {scrn = cat(scrn :Screening,\n)} {dx = cat(dx:Diagnosis,\n)} {df = cat(df:Don't Forget,\n)} ) } I want to be able to do: aar(dx) # function does cat(dx:Diagnosis,\n) aar(c(dx,df)) # function does cat(dx

Re: [R] Switch Help

) # Error in match.arg(command) : 'arg' should be one of scrn, dx, df -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of oscar linares Sent: 18 November 2009 10:40 To: r-help@r-project.org Subject: [R] Switch Help Dear Rexperts

[R] Rcmdr

Is there a UseR! manual in the works for the outstanding Rcmdr? -- Oscar Oscar A. Linares, MD Translational Medicine Unit Bolles Harbor Monroe, Michigan [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

[R] STACK

Dear Rxperts I have a data.frame as follows ABCD 14 710 25 811 36 912 I want to convert it to a data frame with a single row (i.e., stack the columns without the heading) 1 2 3 4 5 6 7 8 9 10 11 12 Any suggestions please. Thanks in advance! --

[R] data management

Dear Rxperts, I would like to convert the following: StudyStudy.NameParameterDestSrcFormValueMin MaxFSD 1NT_1-0BFK(03)03A0.128510.0E+001. 0.41670E-01 1NT_1-0BFL(00,03)0003D0.36577 1NT_1-0BF

[R] data management

Dear Rxperts, I have a varaibles data file that looks like this p(1) 10 p(1) 3 p(1) 4 p(2) 20 p(2) 30 p(2) 40 p(3) 4 p(3) 1 p(1) 2 I cannot process these data with R because it does not like the parentheses. How can I get these to look like: p1 10 p1 3 p1 4 p2 20 p2 30 p2 40 p3 4 p3 1 p3 2

Re: [R] read a xls file

use install.package(RODBC) library(RODBC) cnct - odbcConnectExcel(filename.xls) hope this helps On Sun, Jan 18, 2009 at 9:15 AM, Michele Santacatterina miksa...@gmail.comwrote: Hello, i have a xls file. I will read it in r, what library-command i use for this?? any ideas?? Thanks

[R] ?grep

Dear Rxperts, I have the following data: Study Study.Name C Category TC Time QC QO SD FSD Theta 1 NONE 0P(22) 0 0.00 7.5596 0 0 8.0361e-03 0 1 NONE 6G(50) 0 0.00 1. 0 0 0.e+00 0 1 NONE 2F(02) 0 0.00

[R] install.views()

Dear Rxperts, Using R 2.8.1 and trying install.views(Cluster) getting error Error: could not find function install.views Please help:-( -- Oscar Oscar A. Linares Molecular Medicine Unit Bolles Harbor Monroe, Michigan [[alternative HTML version deleted]]

Re: [R] install.views()

Thanks! Your suggestion did it:-) OAL On Sat, Jan 10, 2009 at 3:00 PM, oscar linares wins...@gmail.com wrote: Dear Rxperts, Using R 2.8.1 and trying install.views(Cluster) getting error Error: could not find function install.views Please help:-( -- Oscar Oscar A. Linares

[R] Converting english words to numeric equivalents

Hello, I am trying to convert english words to numeric equivalents, e.g., abc to 123. Is there a function or library or package for doing this in R? If not, can it be done easily in R? Thanks, Oscar [[alternative HTML version deleted]]

Re: [R] Manipulate Data (with regular expressions)

Check out sedit() in the Hmisc package Cheers! --- On Tue, 7/8/08, Kunzler, Andreas [EMAIL PROTECTED] wrote: From: Kunzler, Andreas [EMAIL PROTECTED] Subject: [R] Manipulate Data (with regular expressions) To: r-help@r-project.org Date: Tuesday, July 8, 2008, 7:11 AM Dear Everyone,