See in-line comments below. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com
> -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf > Of monthodon > Sent: Tuesday, July 31, 2012 7:57 AM > To: [email protected] > Subject: [R] Creation of a vector of time series from a data frame > > Hello, > > I am a new user of R. I am trying to create a vector of time series called > "LTot" from a data frame. The purpose is to call LTot element from a loop > to make multiple regressions over a large number of regressors. Here a piece > of R code > > OGData <- read.table("heartatk4R.txt", header=TRUE) > OGCol <- ncol(OGData) > OGRow <- nrow(OGData) > S1.ts=ts(OGData[,1]) > # Definition of the time series vector > LTot=matrix(,nrow=OGCol) > # assignment of each column of the data frame to an element of the time > series vector > for (i in 1:OGCol) {LTot[1:OGRow,i] <- ts(OGData[,i]);} > > When I run R, I got the following error message: > > Error in LTot[1:OGRow, i] <- ts(OGData[, i]) : subscript out of bounds > > I will appreciate it if somebody could help me on this issue. When you see 'subscript out of bounds', suspect that the subscript operator, "[", is the problem. There are two calls to "[" in the line quoted in the error message: look at the dimensions of the two objects being subscripted with dim(LTot) and dim(OGData). If those numbers look bad, figure out why the object doesn't have the expected dimensions. If those numbers look ok, change your loop a bit to print the current value of 'i' so you can tell what it was when the error occurred. If you still cannot see the problem, break up the statement in the loop so the error can occur only on a line with one call to "[" (so the error message tells you which is at fault). for(i in 1:OGCol) { cat("i=", i, "\n") tmp <- ts(OGData[,i] LTot[1:OGrow,i] <- tmp } There are more advanced methods for debugging (e.g., set options(error=recover)) but adding print statements can quickly solve a lot of debugging problems. > > > Thank you. > > X. > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Creation-of-a-vector-of- > time-series-from-a-data-frame-tp4638543.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
