similar to: window(): feature request

Dear R-List, I have a dataframe X containing factor f and numeric variable x1, x2, ... I want to create a new dataframe (or possibly a matrix) that gives statistics (e.g. sum) for the variables x1, x2, ... in each group defined by factor f. What is the simplest way to do this? I tried: attach(X) Z <- data.frame(f=levels(f),x1=as.vector(lapply(split(x1,f),sum))) and stumbled on: Error

Dear list, I want to perform a biplot, using customized titels for the x and y axis. Setting xlab="" and ylab="" resulted in an error, e.g.: > data(USArrests) > biplot(princomp(USArrests),xlab="",ylab="") Error in biplot.default(t(t(scores[, choices])/lam), t(t(x$loadings[, : length of dimnames[1] not equal to array extent > How do I

From: "Wolfgang Koller" <koller2@fgr.wu-wien.ac.at> Organization: University of Economics, Vienna Date: Tue, 23 Nov 1999 16:29:22 CET (+0100) MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT CC: r-bugs@biostat.ku.dk, r-help@stat.math.ethz.ch References: <153DF9230E8@fgr.wu-wien.ac.at> X-mailer: Pegasus Mail

Hi! The postscript device in 0.90 does not produce symbols (pch=) as it should. E.g.: postscript(file="test.ps",width=8,height=6.4,horizontal=FALSE) plot(1:10,1:10,pch=1:5) legend(1,9,letters[1:5],pch=1:5) dev.off() The result looks quite different compared to the X-windows version. The symbol 1 (pch=1) is much to small, while the other symbols seem to big. Is it a bug? How can I

Hi! Since installation of R 0.90 there are problems with the size of text and numbers also in the x11-device (I reported about similar problems with the postscript device recently). For numbers and letters a different size is used: plot(1:10,1:10,type="n") text(2,8,"F5F5F5F5F5") text(2,7,"F5F5F5F5F5",cex=2) The same problem is also found in the postscript

Hi! Since installation of R 0.90 there are problems with the size of text and numbers also in the x11-device (I reported about similar problems with the postscript device recently). For numbers and letters a different size is used: plot(1:10,1:10,type="n") text(2,8,"F5F5F5F5F5") text(2,7,"F5F5F5F5F5",cex=2) The same problem is also found in the postscript

Hello! When I know the vector of the variance of the disturbances (i.e. the structure of heteroskedasticity), say Var(u_{i})=v_{i}, what is the weights I should use as argument to lm(): M <- lm(y~x,weigths=1/v) or M <- lm(y~x,weights=1/(v^0.5)) ??? In the help pages I did not find a clear answer to this question, so please could someone help me! Thanks, Wolfgang Koller

Dear R-Users! My aim is to produce boxplots without the outliers included in the plot. I started to write a function that looks something like: myboxplot <-function(x,fa) { bpdata <- boxplot(x~fa,plot=FALSE) bpnames <- names(bpdata) for (JJ in bpnames) { command <- paste("bpdata$",JJ,"$out <- numeric(0)",sep=""); eval(command) }

================================================= This is an automated summary of the status of the R-bugs repository. Note that this may be neither complete nor perfectly correct at any given instance: Not all bugs are reported, and some reported bugs may have been fixed, but the repository not yet updated. Some bug fixes are difficult to verify because they pertain to specific hardware or

Dear R-Users and Developpers, Currently R does not include functions to compute the skewness and kurtosis. I programmed it myself in the following way, but probably *real* programmers/statisticians can do that better: mykurtosis <- function(x) { m4 <- mean((x-mean(x))^4) kurt <- m4/(sd(x)^4)-3 kurt } myskewness <- function(x) { m3 <- mean((x-mean(x))^3) skew <-

>>>>> "WoKo" == Wolfgang Koller <koller2@fgr.wu-wien.ac.at> writes: WoKo> Hi! The postscript device in 0.90 does not produce symbols WoKo> (pch=) as it should. E.g.: WoKo> postscript(file="test.ps",width=8,height=6.4,horizontal=FALSE) WoKo> plot(1:10,1:10,pch=1:5) WoKo> legend(1,9,letters[1:5],pch=1:5) WoKo>

Full_Name: Wolfgang Koller Version: 1.0.0 OS: linux Submission from: (NULL) (137.208.7.48) > data(UKLungDeaths) > ts.union(mdeaths, fdeaths,dframe=TRUE) Error in names<-.default(*tmp*, value = nmsers) : names attribute must be the same length as the vector > cbind(mdeaths, fdeaths,dframe=TRUE) Error in names<-.default(*tmp*, value = nmsers) : names attribute

Dear Thomas, I want to use evaluate effect of Age using restricted cubic form in the FGR function as Fgr.crr <- FGR(Hist(time, event) ~ rcs(Age_years), data=dat) It provides error. " Error in parse(text = termtext, keep.source = FALSE): .... 1: response ~ rcs(Age_years Do I need to change any of the R code? Regards Amalraj Raja The University of Aberdeen is a charity

================================================= This is an automated summary of the status of the R-bugs repository. Note that this may be neither complete nor perfectly correct at any given instance: Not all bugs are reported, and some reported bugs may have been fixed, but the repository not yet updated. Some bug fixes are difficult to verify because they pertain to specific hardware or

Hi, I've searched in the wiki and in the mailinglist archives but haven't found anything about password character sets within the dovecot authentication deamon. My problem is that we have users with passwords containing scandinavian characters (???, umlauts) and the debug log shows that different clients send the password in different charsets. The passwords are stored in a Mysql

hi everyone, I want to backtest a simple strategy with RSI, im using "sigThreshold". i took example from the http://blog.fosstrading.com/ site to understand how quanstrat works. but now, i have a problem with my code that i really don't understand, R says me: Error in match.names(column, colnames(data)) : argument "column" is missing, with no default please can

I have this code: IEF <- to.monthly(IEF, indexAt="endof") SPY <- to.monthly(SPY, indexAt="endof") I would like to use a for loop instead of separate entries, so the only code that needs to be modified is the list of symbols. symbols <- c("IEF", "SPY") for(symbol in symbols) { symbol <- to.monthly(symbol, indexAt="endof") } This

Dear Geskus, I want to develop a prediction model. I followed your paper and analysed thro' weighted coxph approach. I can develop nomogram based on the final model also. But I do not know how to do internal validation of the model and subsequently obtain calibration plot. Is it possible to use Wolbers et al Epid 2009 approach 9 (R code for internal validation and calibration) . It is

Dear all, first, I would like to thank R-core team for making so a great software available. Thank you all, really! Using R (1.0.0) on a Win98 platform, I need an x-server to run xgobi (through R xgobi interface). I've been using a MI/X server but trying to upgrade I noticed that MI/X is no longer available for free. Similarly, eXceed is available at evaluation version (for a limited time

Dear R-helpers, I am looking for a segmentation package that gives some "tree identifier" as output for every observation in the data set (my response variable is binary). I have skimmed through "rpart", "ada" and "adabag": The output "trees" gives you the formula, but I have to run several thousand segmentations on different data sets and it