similar to: Fw: modified mankendal

Hi Elham, The error message: Error in if (S == 0) { : missing value where TRUE/FALSE needed means that for at least one S, the value is missing. The best advice I can give you is to load the data frame X1 as in your code above, and try something like: which.na<-function(x) return(which(is.na(x))) sapply(X1,which.na) You will then get a list of the positions of any NA values in X1. Jim On

Dear Sir/Madam, I am a MSc student of Biostatistics. For my thesis, I used R to simulate data. Surprisingly, when I wrote the code below in R14, the output was a vector full of "FALSE"s. Would you please check and let me know why this happend? ti=seq(1,10,by=0.1) ti==2.9 I'm looking forward to receiving your reply. Thank you Elham K.Moez [[alternative HTML version deleted]]

Hi every one, I have a text file like this: 1    4   4    1    6    23 1   4    2    2    3    28 1    4    5    1    2    24 1    2    3    1    1    24 1   2    3    1    2     40 1   2   3    1    4      22 I want to separate columns by comma, like this: 1,4,4,1,6,23 1,4,2,2,3,28 1,4,5,1,2,24 1,2,3,1,1,24 1,2,3,1,2,40 1,2,3,1,4,22   I used this code:

Dear I have a data.frame, and want to fit a constrained non-linear model: data: x y -0.08 20.815 -0.065 19.8128 -0.05 19.1824 -0.03 18.7346 -0.015 18.3129 0.015 18.0269 0.03 18.4715 0.05 18.9517 0.065 19.4184 0.08 20.146 0 18.2947 model: y~exp(a)*(x-m)^4+exp(b)*(x-m)^2+const I try to use nls() and set start=list(a=1,b=1,c=1,m=1), but which always give me a error message that

I have a vector like this (this vector is a colomn of a data set): > 3 5 2 3 7 4 7 8  8 9 0 1 4 I want to separate elements of the vector by comma like this: > 3,5,2,3,7,4,7,8,8,9,0,1,4 How can do this? Thanks. Elham [[alternative HTML version deleted]]

Hello again, I'm not attempting an install of Samba 3.0.4 from source. I want to specifically compile in ads and winbindd support. So, I already compiled and installed OpenLDAP 2.2.13. Now the configure script is hung on krb5 dependancy: checking for krb5.h... no configure: error: Active Directory cannot be supported without krb5.h So I downloaded and attempted compile of krb5 1.3.4, but