[R] Import selected columns from sas7bdat file

]*, and (2) read_sas *[from library 'haven']. *But couldn't find what I am looking for. Best regards, Utkarsh Singhal 91.96508.54333 [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBS

Re: [R] Import selected columns from sas7bdat file

not be quite >> as hard as it sounds. >> >> Incidentally, do teach your mailer to not send plain text. It is not much >> of a problem this time, but HTML mails can become quite unreadable on the >> list. >> >> >> -pd >> >> >> > On 10

[R] Linear model vs Mixed model

# Model-1 library(lmer) coef(lmer(Reaction ~ Days + (1| Subject), sleepstudy)) # Model-2 coef(lm(Reaction ~ Days + Subject, sleepstudy)) Can somebody tell me the reason? Are the above formulations actually different or is it due to different optimization method used? Thank you. Utkar

Re: [R] Linear model vs Mixed model

this, can you alternately answer the following: "Is it possible to define the 'lm' and 'lmer' models above so they produce the same results (at least in terms of predictions)?" Thanks again. Utkarsh Singhal 91.96508.54333 On 12 July 2016 at 19:15, Thierry Onkelinx wrote

Re: [R] Linear model vs Mixed model

123456 295.0310 305.4983 315.9656 326.4329 336.9002 347.3675 And these are quite different from the mixedmodel: > fit_lmer = lmer(Reaction ~ Days + (1| Subject), sleepstudy) > head(predict(fit_lmer)) 12345

Re: [R] Linear model vs Mixed model

lly go away with large data. So, I am not too concerned about that. I can sleep peacefully if you just say that the difference is due to optimization method used or distributional assumptions :). But if it is anything more too it, then how do I decide which of the above two models to choose in what scenari

[R] help in merging

Hi All, I want to "merge" two datasets by column "ID" and I don't want the result to be sorted by "ID". I am doing the following: > z = merge(x, y, by = "ID", sort=F) The result is not sorted by "ID". But (as oppose to what I expected) it is not even in the original order of eith

Re: [R] help in merging

Thanks, but I kind of new this way already and it doesn't seem an optimal thing to do. What I was looking for is to pass some argument in 'merge' itself which doesn't change the ordering of 'x'. Or, more than that, I am interested in knowing that why is it changing the o

[R] why is object.size is more for constant numeric vector?

Hi All, I ran the following lines in R: print(object.size(a <- rep(1,10^6)),units="Mb") print(object.size(a <- rep(3.542,10^6)),units="Mb") print(object.size(b <- rep("x",10^6)),units="Mb") print(object.size(b <- rep("xyzxyz xyz",10^6)),units="Mb") print(object.size(b <- 1:10^6),units="Mb") prin

[R] reading Excel file

Hi R, I have an excel file in which the third column is "date" and others are "character" and "numeric". Number of columns are 12 If I use this to read the file in R: x = read.xls("D:\\file.xls") The problem is that my date column is read in julian dates. So I am using:

Re: [R] reading Excel file

Sorry but I was interested in reading as date format from the excel itself. Is there any way of doing this? Regards Utkarsh -Original Message- From: Gabor Grothendieck [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2008 8:43 PM To: Utkarsh Singhal Cc: [EMAIL

[R] How to get unique solution from nnet function

, Regards Utkarsh Singhal | Amba Research Ph +91 80 3980 8017 | Mob +91 99 0295 8815 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com <mailto:utkar...@ambaresearch.com> This e-mail may contain confidential and/or privileged i...{{drop

[R] how to label the branches of a tree

his? Thank you, Regards Utkarsh Singhal | Amba Research Ph +91 80 3980 8017 | Mob +91 99 0295 8815 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com <mailto:utkar...@ambaresearch.com> This e-mail may contain confidential and/or privileged i...{{d

Re: [R] how to label the branches of a tree

: Utkarsh Singhal Cc: R-help Forum Subject: Re: [R] how to label the branches of a tree You may have to change/scale the sizes of the font by using "cex" and then to keep all labels within the plotting window, use "xpd=TRUE". Like in text(fit, use.n=TRUE, cex=0.8, xpd=TRUE)

[R] using 'lrm' for logistic regression

Hi R, I am getting this error while trying to use 'lrm' function with nine independent variables: > res = lrm(y1994~WC08301+WC08376+WC08316+WC08311+WC01001+WC08221+WC08106+WC0810 1+WC08231,data=y) singular information matrix in lrm.fit (rank= 8 ). Offending variable(s): WC08101 WC0822