similar to: New R user looking from help

I am using R for Unix and want to make some LaTeX tables. I have already played around in R for Windows and have succeeded in making tables that I want using the following code: latex(Estimates, file='out.tex', rowlabel='',digits=3) However, when I use this code in Unix, I can never find the file "out.tex". I assumed that R would send the file to whatever directory I

I have a question about how to reference variables in a dataframe. Normally, after I have read in some Stata data using the following command all <- read.dta('all.dta') Whenever I want to use the variable "sat.vr1" in the "all" data frame, I do so using all$sat.vr1 However, I'd like to be able to use the sat.vr1 variable without the "all$" (as well

Thanks to the help of many on this list, I am now an R user and have been able to write some functioning code to do matching estimation. I have two for loops (i in 1:3, and j in 0:2). Within the loops, I had been creating matrices of relevant estimation coefficents in order to make lots of LaTeX tables. Well, now I want to be able to combine the results of many different estimations from within

Hi all, 1. How to construct a date from three variables year, month, and day, where all three are integers? 2. I have a dataframe by date and sector. I would like to add-up all entries for all variable with identical date and sector, replacing the original entries, i.e. emulate the STATA command "collapse (sum) var1 var2 var3, by(date sector)". Thank you, Serguei Kaniovski

I am new to R and really like to get a handle of basics in short period of time. What I am trying to do is get myself a list of must-do's (read in data, batch execution, delimiters, basic modeling commands) in R as in Stata or SAS. I am just wondering how to execute a R batch file in RGui. Suppose I have a script file (like do file in stata, or sas file in SAS) under c:\whatever.R, how can I

[ronggui] >R's week when handling large data file. I has a data file : 807 vars, >118519 obs.and its CVS format. Stata can read it in in 2 minus,but In >my PC,R almost can not handle. my pc's cpu 1.7G ;RAM 512M. Just (another) thought. I used to use SPSS, many, many years ago, on CDC machines, where the CPU had limited memory and no kind of paging architecture. Files did

Perhaps someone will have a solution to my more general problem, but here is the specific one: I used the round() function to round some estimates to 3 decimal places. I then sent put the rounded estimates in a matrix and used latex() to make a LaTeX table from them. However, in my table, there are estimtes which only have 2 decimal places. I assume that the third decimal place in these numbers

> library(foreign) > da<-read.dta(file.choose()) > da startdat starttim enddate endtime days hoursmin secused 1 2005-01-11 2 2005-12-15 20.19 NA NA 9 > attributes(da) $datalabel [1] "Example of use of date and time functions" $time.stamp [1] "15 伿伄伓侢佋伮 2005 20" $names [1] "startdat" "starttim"

I have a dataset with 4 years of students, and normally I want to estimate things using each individual year, so I have a for loop as follows for (i in 1:4){} However, the only way I know how to calculate estimates using all four years of data is to put the estimations outside of the loop. Is there anyway to make a for loop that uses all four years at once, then uses each individual year?

When I try to install hte Econometrics view I get the following error: CRAN task view Econometrics not available in: install.views("Econometrics") I have already install the ctv package and loaded it before trying to install the above... Any ideas as to what's going on?

Hi, Given a frame with calendar date's: "2005-07-01", "2005-07-02","2005-07-03","2005-07-04","2005-07-05",etc. I want to extract the following from these dates: week number month number year number Any ideas how to accomplish this? Many thanks. Regards, Richard

Hi, I'm moving (slowly) to R from STATA. I often have need to move through a set of tasks across a series of years. In this case, you can see that I'm mimicking -reshape- in STATA, but I'm less interested in the task than in programming R. library(foreign) mydata<-read.dta("z:\example.dta") for (y in 2000:2002) {

My question is when the object argument of NexthMethod be used? In the following example, weather object argument is used will not affects the result. ### foo=function(x) {UseMethod("foo")} foo.cls1=function(x) { x=x+1;class(x)<-"ncls" NextMethod() } foo.ncls=function(x) { cat("ncls\n") } foo.cls2=function(x) { cat("cls2\n");print(x) }

it takes a long time to load the lme4 package.anyone else encounter this problem? > system.time(library(lme4)) 佋佖伻侂佇佽佉仾伒伳伋佁伡伃伆侟仯伜Matrix 佋佖伻侂佇佽佉仾伒伳伋佁伡伃伆侟仯伜lattice [1] 19.90 0.30 25.56 NA NA > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status Patched major 2 minor

I want to get the logLik to calculate McFadden.R2 ,ML.R2 and Cragg.Uhler.R2, but the value from multinom does not have logLik.So my quetion is : is logLik meaningful to multinomial logistic model from multinom?If it does, how can I get it? Thank you! ps: I konw VGAM has function to get the multinomial logistic model with logLik, but I prefer use the function from "official" R

Dear R Users, Here is another probelm/question. I would like to run some panel regressions with R. Therefore I have combined several time periods of data for different individuals in my database. I have already run pooled OLS but I would need to calculate a Fixed Effects Estimator (within estimator). Unfortunately I couldn't find anything like that in the RSearch and I suppose that lme

Consider this: > y <- matrix(1:8, ncol=2) > is.matrix(y[-c(1,2),]) [1] TRUE > is.matrix(y[-c(1,2,3),]) [1] FALSE > is.matrix(y[-c(1,2,3,4),]) [1] TRUE It seems like an inconsistent behaviour: - with 2 or more rows we have a matrix - with 1 row we do not have a matrix and - with 0 rows we have a matrix again I just stumbled on this behaviour, because I had a problem with my

It is not a pure R question,but I hope some one can give me advices. I want to use analysis my data with the multilevel model.The data has 2 levels---- the second level has 52 units and each second level unit has 19-23 units.I think the sample size is quite small,but just now I can't make the sample size much bigger.So I want to ask if I use the multilevel model to analysis the data set,will

I am struggling with migrating some stata code to R. I have a data frame containing, sometimes, repeat observations (rows) of the same family. I want to keep only one observation per family, selecting that observation according to some other variable. An example data frame is: # construct example data fam <- c(1,2,3,3,4,4,4) wt <- c(1,1,0.6,0.4,0.4,0.4,0.2) keep <- c(1,1,1,0,1,0,0)

the data file has such structure: 1992 6245 49 . . 20 1 0 0 8.739536 0 . . . . . . . . "alabama" . 0 . 1993 7677 58 . . 15 1 0 0