similar to: Help in writing my own function

Hi,all I only got the time data such as: tms<-c("19:30:23","18:39:10".....) I want to manipulate this time series data. For example, plus one second(or minute) or minus one second This data only has the time(h:m:s), without the date. I know that there are chron package, ISOPix class and the timeDate class, but all these class need the input of date. How can we

Hi,all: I am running a nonlinear regression and there is a problem. There is a data frame: data p s x t 1 875.0 12392.5 11600 0.06967213 2 615.0 12332.5 12000 0.06967213 3 595.0 12332.5 12000 0.06967213 4 592.5 12337.0 12000 0.06967213 5 650.0 12430.0 12000 0.06967213 6 715.0 12477.5 12000 0.06967213 . . . . str(data): 'data.frame': 234 obs. of 4 variables:

Dear R experts, How to find out the index of minimum or maxmum number in a vetor or data.frame? For example, a= n price 1 50 -2 100 0 200 -1 300 ...... I want to find out the row which the n is the smallest or largestest and extract the price. Thanks Ted -- View this message in context:

Dear R users I am runing into a problem in reading data in R This is the error information a<-read.table("tt_mb_200409.txt",as.is=T) Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : line 1653997 did not have 5 elements It seams that some lines don't have equal variables. I want to try >

Dear R experts, I have a folder names "200209" and in this folder there are many data files, such as: "BA020902.txt","BA020903.txt","BA020904.txt", "BA020905.txt","BA020906.txt","BA020909.txt", "BA020910.txt","BA020911.txt","BA020912.txt",

Hi all I have some tick-by-tick data and I have calculated the intraday returns. I want to sum up the intraday squared returns to calculate the daily volatility(or daily variance). I know that the s-plus FinMerics has the function aggregateSeries function that can be apply to daily data: aggregateSeries(x, Fun, by="daily"), but the counterpart function in R:applySeries can not be apply

Dear list, hi ! I am a R beginner and I have a function to optimize . alpha = argmin{ f(x,alpha) } I want alpha to be in [0,1]. Is there any function that can work? I use nlm() but i can't fix the domain of alpha. thanks in advance _______________________ Jiang Peng, Ph.D. Candidate Department of Mathematics & Antai college of Economics and Management Shanghai Jiao

Dear R users I have run an regression and want to extract the p value of the F statistics, but I can find a way to do that. x<-summary(lm(log(RV2)~log(IV.m),data=b)) Call: lm(formula = log(RV2) ~ log(IV.m), data = b[[11]]) Residuals: Min 1Q Median 3Q Max -0.26511 -0.09718 -0.01326 0.11095 0.29777 Coefficients: Estimate Std. Error t value Pr(>|t|)

FIXME:pthread_rwlock_rdlock FIXME:pthread_rwlock_unlock what's this, what's causing it and what needs fixing (I'll give it a look if it's needed) or is it just an old error that dosn't really need fixing (I can run almost everything I want to and the all show this error) just intersted Rob

Dear R users, I want to creat a group of data frames, such as: d1<-data.frame(x=factor(),y=numeric(),...) d2<-data.frame(x=factor(),y=numeric(),...) d3<-data.frame(x=factor(),y=numeric(),...) : : d50<-data.frame(x=factor(),y=numeric()) How can I use the loop to simply my procedure? Thanks advance Ted -- View this message in context:

New to asterisk so please be gentle. I'm guessing I'm among a number of recent additions to the list after the article in Linux Mag. I gotta say I'm *very* intersted in the project and will be doing lots of reading shortly. A couble quick questions first... How suitable is Asterisk for use as an IVR providing callers with textual data out of a database? Can it be combined easily

Hello Frank, I am a reserch student at the Indian Institute of Technology in Chennai, India. I need to work in Matlab Release 12 or Release 14 for my research purpose. The OS I like and use is Linux, (Debian, Fedora), is it possible to install Matlab 6.5 or 7.x using wine? I saw your website www.frankscorner.org and saw some instructions. Can you please give me a step by step instruction step for

All, I am intersted in having 2 extensions for the same sip phone... The reason is when I am using the outgoing spool file to initiate a SendText() command to my SIP phone I dont want voicemail to answer the call and my text message go there. I want my outgoing call to FAIL and then I can try again some time later to deliver the message. Any suggestions on how to do this is appreciated.

Hello the list, For a personal use, I would be intersted in creating my own custom CentOS ISO. For that, I would love to use the build process used for the the official ISOs generation. Is the documentation about this release process and the relative tools and configuration files are available and public for CentOS 7 ? If yes, where is it possible to find them ? I found data on

Hello, I'm very intersted in developing a site using your platform. I was wondering if you've tested the theoretical maximums for this software and can show me some numbers. How many simultaneous users could I expect to handle at 128k (hardware not being the limiting factor)? If you'd like to speak please send a number and a good time to call. Sincerely, -- Eric Haddad

dear all, for some reason I am intersted in updating a glm taking variables from its model argument, namely: > dati<-data.frame(y=runif(10),x=1:10) > obj<-glm(y~x,data=dati) > obj$model[,c("A","a:b")]<-cbind(rnorm(10),runif(10)) > names(obj$model) [1] "y" "x" "A" "a:b" > update(obj,.~.+A,data=obj$model) #it

Hi, I'm running a regression using lm(), in which one of the right-hand side variables is factor with many levels (say, 80). I am not intersted in the estimates of the resulting dummies, but I have to include them in my regression equation. So, I don't want the estimates associated with theses dummies to be printed by summary.lm( ). Is there an easy way to do this? Thank you, Dimitri

Hi, I'm a phd student of economics in Tunisia who is intersted now with the seasonal unit roots test of Canova and Hansen. So I've installed the package "uroot" in RGUI. I use R 2.4.0. The problem when I apply the function to my data, I've always a message from RConsole that it is impossible to find the function CH.test. Are there problems as for the use of this package?

Dear List, Does there exist a function that produces a heat map like this one (image 3 of 4): http://www.tdameritrade.com/tradingtools/options360.html?a=HDY&referrer=http%3A%2F%2Fquery.nytimes.com%2Fsearch%2Fsitesearch%3Fquery%3Dheatmaptype%3Dnyt In addition to colors, two other main features I am intersted in are: 1. Proportionality in the size of the grid. 2. Mose-over capability. I may

Hey guys, I just downloaded the latest beta 4 libraries and compiled using the included Mac project files on Codewarrior 5.3. Everything compiled clean except for a link error (multiple definition) on the vorbislib itself. I suppressed the error, and got my newly compiled lib. I then built the sample encoder and included the libs. I tried to encode a file and BOOM! Frozen Mac! So then I