similar to: newbie question about index

Hi there: I'd thought these two versions of noncentral t-distribution are essentially the same: > qqplot(rt(1000,df=20,ncp=3),qt(runif(1000),df=20,ncp=3)) But, the scales of the x-axis and the y-axis are quite different according to the QQ-plot. Did I make any mistakes somewhere? Thanks, Long ---------------------------------

I have two data frame A and B adn want to cross them. A has format as: a1 a2 a3 1 2 3 2 3 1 1 3 2 ... B: b1 b2 1 2 2 1 ... the combine result shall be something like a1 a2 a3 b1 b2 1 2 3 1 2 1 2 3 2 1 2 3 1 1 2 2 3 1 2 1 1 3 2 1 2 1 3 2 2 1 .... is there a function able of doing this instead of loops? Thanks, Sun

Hello . I have a little question .. I work with Anova (aov) and Manova (manova) and want to print some result in a text file. I see the results with the summary function or the summary.aov function but i do not know how to save the differents probabilities of error in a value. Sorry for my poor English Thanks a lot. -- Lamoral Julien

Hi, I have a data frame df with column names a,b and c. Now I want to get a subset of df that satified the condition a == 1 and b == 2, how do I specify this. For one condition like a == 1 I can use subdf = df[,df$a==1] to get the right answer, but subdf = df[,df$a==1 && df$b ==2] does not return the right answer. Some quick tips please.

Hi I am trying to generate a design using Algdesign and came across terms of "exact design" and "approxiamte theory design", I did not find a reference to explain what they are, could some one shed some light about this on me? Another question is, I want to measure the main effects and at least two interactions, variables are factors, how do I ensure this in formula,

I have strings contain postcode and letters, some seperated with blank, some with comma, and some hasn't seperated. eg, "2324gz" "2567 HK" "3741,BF" I want to seperate the number and letters into two new variables. I know this should be quite basic question, but searched on regex syntax and that seems a bit scarey to me, any one can shot me a quick solution

Dear Users, I have a variable in my dataset which is of type factor. But it actually contains numeric entries which like 5.735 4.759 ..... This is because the data was read from a CSV file into R and this variable contained other charaters which were not numeric. I have now dropped the records with the characters which are not numeric for this variable and want to change it to numeric srotage

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Hi, I have some problems when using AlgDesign->optFederov() generating designs. I have 6 variables, all factors. 3^2 and 4^4, I want to have a design that can take care of main effects and two interactions within 2 pair of variables v3-v4 and v5-v6, the following is the code ################ require(AlgDesign) set.seed(1) levels = c(v1=3,v2=3, v3=4,v4=4,v5=4,v6=4)

Hi List, I am new to this Rsoftware, i want to make a sereis for example which is having values like this, s<- 0,0.1,0.2,0.3,0.4........,1 i tryed this statement s<-0:0.1:1 but this giving an error megssage. but by default increment 1 it is taking ,,,,,so what to do ,, i want to use this varible in for loop.. like for(j in s) thanks in advance ANIL KUMAR( METEOROLOGIST) LRF

my version of wine is 20040408 when i use wine to install a software named "flashpgm" it start the installshield,and a windows shows"The operation system is not adequate for running Flash programmer",and installation stoped. All the imformation showed is as below: fixme:nls:init_default_lcid charset GB18030 was not recognized err:dc:DCE_FreeWindowDCE [0x90031] GetDC() without

All, Is there are a wildcard in R for varible names as in unix? For example, rm(results*) to remove all variable or function names that begin w/ "results"? cheers, Dave ps - please respond directly to afshar@miami.edu [[alternative HTML version deleted]]

Salut, Je souhaiterai définir dans mon fichier environement.rb une variable qui puisse être récupéré dans mes controlleurs. Plus précisément je souahiterai initialiser une varible avec l''ip du serveur qui héberge l''appli et pouvoir la récupérer dans mes controlleurs. Je suis sur que c''est trés simple mais je n''ai pas trouvé l''info. Merci ! --

Hello, I wonder when I do coxph in R: coxph( Surv(start, stop, event) ~ x, data=test) If x is a categorical varible (1,2,3,4,5), should I creat four dummy varibles for it? if yes, how can I get the overall p value on x other than for each dummy variable? Thanks Lisa Wang Princess Margaret Hospital Phone 416 946 4501

My systems is rh9, I installed the latest wine (20040914), with a RPM package downloaded from http://rpm.pbone.net/. when I execued "wine setup.exe" (Note: it is in the hardware, not in CDROM. I am not for sure whether it is a problem). The following errors occured. fixme:msi:MsiEnableLogA 00000516 "c:\\windows\\temp\\Office 2000 Premium Setup(0008)_MsiExec.txt"

I am porting llvm-gcc frontend. We have ported GCC4.2 for our target. So I move *.h *.md and *.c to llvm-gcc.  I do not implement any LLVM MACRO, and use default action of llvm-gcc.  I get a new llvm-gcc for our target. But I get a bug. /******************************/ //#include <stdio.h> union MYunion {   unsigned char uc ;   int ui; } myunion; void vfu1(union MYunion  u) {     u.ui =

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Hi, there. I used the function read.maimages in limma package to analyze the microarray data .but I got following message >RG <- read.maimages(targets$FileName, source="spot") Error in grep(pattern, x, ignore.case, extended, value, fixed) : invalid argument I don't know what is the matter Thanks a lot Regards Shizhu Zang Department of Biochemsitry Peking

Hi , there: I used function source to download the package but found > source("http://www.bioconductor.org/getBioC.R") Error in file(file, "r") : unable to open connection In addition: Warning message: unable to resolve 'www.bioconductor.org'. Then I downloaded the packages from CRAN and found > local({a <- CRAN.packages() +