similar to: Help with try or tryCatch

Delving into the murky world of dates and times I found this: dates <- c("02/27/92", "02/27/92", "01/14/92", "02/28/92", "02/01/92") > times <- c("23:03:20", "22:29:56", "01:03:30", "18:21:03", "16:56:26") > x <- paste(dates, times) > z <- strptime(x, "%m/%d/%y

I am aware of one (unofficial) guide to style for R programming: http://www1.maths.lth.se/help/R/RCC/ from Henrik Bengtsson. Can anyone provide further pointers to good style? Views on Bengtsson's ideas would interest me as well. David Scott _________________________________________________________________ David Scott Department of Statistics, Tamaki Campus The University of Auckland,

This is really a query about MySQL which I am trying to use to set up a database which I will then access with RODBC. I have my data in a .csv file, and some of the fields are date/time fields. I tried to create a table using mysql with the definition of the date/time field given by CallDate DATETIME, but I got an error saying that the first row has 28/07/2006 0:00 in that field. What I

I am looking for a recommendation for an open source competitor to Winzip. I seem to recall Brian Ripley mentioning one in the last year or so, but couldn't find it in the mail archives. (Searching on Ripley there is somehow not terribly useful.) Suggestions? David Scott _________________________________________________________________ David Scott Department of Statistics, Tamaki Campus

I want to do some recoding of variables: code Age into groups and recode a factor into a smaller number of levels. There are a couple of options for recode functions, in the car package and in memisc, and I think in gmisc. Does anyone have any opinions on the the easiest, most reliable approach for these problems? David Scott _________________________________________________________________

I have just got a new machine and had a basic cygwin installed before it was given to me. It didn't include make. Previously I have installed Rtools to build packages and now I have got myself a bit confused as to whether to just install make from the cygwin packages or to install rtools. I would welcome any advice. I had a look at the rtools section in the Administration Manual and the

I am having trouble with creating a POSIXct object. If I create a variable of class Date first out of the date part of my data, I am ok, but if I just paste the date and time parts together and try and create the POSIXct object, I have problems. Here is a toy example created from the actual data which caused the problem. I am using R 2.0.1 on Windows XP. > # Data frame with dates and

Hello, I have a dataframe with 9 columns, and I would like to sort (order) the right-most eight of them alphabetiaclly, i.e.: ID1 ID2 F G A B C E D would become ID1 ID2 A B C D E F G Right now, I'm using this code: attach(data) data<-data.frame(ID1,ID2,data[,sort(colnames(data)[3:9])]) detach(data) but that's not very elegant. Ideally I could specify which columns to sort and

Hi everyone, I need help. I want to have a "uniform" kind distribution. When I used sample function I got almost twice many zeros compared to other numbers. What's wrong with my command ? temp <-sample(0:12, 2000, replace=T,prob=(rep(1/13,13))) hist(temp) Thanks in advance, Taka,

I am sorry to ask such a simple question, but my knowledge of programming language is extremely limited, and I couldn't find the answer in any of the normal resources. I want to do a for loop in which m takes on the values 1, 5, 10, 15, 20. What is the syntax for doing that? I had been doing a loop for m in 1:20, but I only want those values above. Thanks, Brian

Hey, R-listers I want to get some statistical books on Cumulants for studying. So will you please give me some suggestions on these related books? Thanks for your point. Fred

hi all can anyone tell me what is head() function in r. what is it's utility? thanks in advance --------------------------------- [[alternative HTML version deleted]]

Dear R People: There is a function from the fBasics library to get the probability and quantiles for the hyperbolic probability function. Is there one that will estimate parms of the hyperbolic probability function from a data set, please? Thanks in advance! Sincerely, Erin Hodgess mailto: hodgess at gator.uhd.edu R Version 2.0.1 windows

Hello, what is the meaning of the plots of an acf()-plot, when using a data frame as argument? The result is NOT obvious for me. There are combinations of the columns of a dataframe in the reulting plot. But an acf() is just defined for onyl one time-sreies. So what do the plots mean? I did not found a description in the help-page. Ciao, Oliver

Hello, what are they meaning? It could be something that would show a threshhold above which the result is indicating different meanings then just random noise. But there is no description on the definition of those lines, so it means nothing, if it is not clearly defined. Where can I find a detailed definiton? Ciao, Oliver

Hi, I would like to know if there is an algorithm in R for testing if a data set as a normal destribution. Thank you for your time, Pedro Marques

Dear R users, My question is that how it is possible to generate some random numbers using rnorm( ) function but in log transformed values. Thank you, Tobias --------------------------------- [[alternative HTML version deleted]]

Dear R Gurus: I want to look at the code for the t.test function. I did the following: > t.test function (x, ...) UseMethod("t.test") <environment: namespace:stats> > getAnywhere("t.test") A single object matching 't.test' was found It was found in the following places package:stats registered S3 method for t from namespace stats namespace:stats with

Hi, all a vector such as (1,2,4,-1,NaN,2,4,NaN) if try to replace all the NaN with a numerical value, what's the easiest way? thanks a lot best yong

Dear R Usergroup, I have the following vector and I would like to split it on ",". How can I do this? > u [1] "160798191,160802762,160813395,160816017,160817873,160824082,160825247,160826925,160834272,160836257," Thank you in advance! With my best regards, Georg. ************************************ Georg Ehret Baltimore USA [[alternative HTML version deleted]]