similar to: cbind/rbind inconsistency with NULL parameter (PR#3585)

The R help for cbind/rbind states: > For `cbind' (`rbind'), vectors of zero length are ignored unless > the result would have zero rows (columns), for S compatibility. > (Zero-extent matrices do not occur in S and are not ignored in R.) I presume this means the S language as defined in the Blue Book ("The ^New S Language", Becker Chambers & Wilks,

Dear R Users and maintainers of packages zoo and timeSeries, I believe there is a recently introduced inconsistency between timeSeries and zoo which is causing a problem with rbind. I had previously reported that I was having problems with rbind in the following code: library(zoo) foo<-zoo(1,order.by=as.Date("2007-10-09")) bar<-zoo(2,order.by=as.Date("2007-10-10"))

An assignment in an argument sometimes makes rbind return invisibly > rbind(diag(3),a<-1:3) > print(rbind(diag(3),a<-1:3)) [,1] [,2] [,3] [1,] 1 0 0 [2,] 0 1 0 [3,] 0 0 1 [4,] 1 2 3 > version _ platform sparc-sun-solaris2.7 arch sparc os solaris2.7

The rbind on empty and nonempty data frames behaves inconsistently. I am not sure if by design. In the first example, first row is deleted, which may or may not be on purpose: df1 <- data.frame() df2 <- data.frame(foo=c(1, 2), bar=c("a", "b")) rbind(df1, df2) foo bar 2 2 b Now if we continue: df1 <- data.frame(matrix(0, 0, 2)) names(df1) <- names(df2)

Dear list, I wonder if there a better way to have rbind/cbind/append to create the first element (if it is empty) instead of doing the following in a loop? for (i in 1:10) { if (i == 1) { aRow = SomeExpression(i) } else { aRow = rbind(aRow,SomeExpression(i)) } } Thanks Anthony

I created a type of object similar to a data frame. In some circumstances, It needs special methods for "[" and "[<-" and rbind() (but not cbind()). Then I found this in the cbind()/rbind() man page: The method dispatching is _not_ done via 'UseMethod()', but by C-internal dispatching. Therefore, there is no need for, e.g., 'rbind.default'.

Hi, I have been trying for a while to use cbind and rbind to add a row and column to the same table but seem to be able only to add one OR the other??? Any help would be most welcome, Tony Evans Australia [[alternative HTML version deleted]]

Hi, I am wondering whether we can apply 'cbind/rbind' on many **equivalent** list objects. For example please consider following: > list1 <- list2 <- vector("list", length=2); names(list1) <- names(list2) <- c("a", "b") > list1[[1]] <- matrix(1:25, 5) > list1[[2]] <- matrix(2:26, 5) > list2[[1]] <- 10:14 > list2[[2]] <-

Hello Everyone, I am using R 2.15.0 and I came across this behaviour and I was wondering why I don't get an integer vector or and integer matrix with the following code: > z <- c(1, 2:0, 3, 4:8) > typeof(z) [1] "double" > z <- rbind(1, 2:0, 3, 4:8) Warning message: In rbind(1, 2:0, 3, 4:8) : number of columns of result is not a multiple of vector length (arg

I have uneven vectors I want to use cbind or rbind to combine them into a matrix. Is there a way to make it so that R would not return error msg saying they're uneven? Thanks. Edward Chen Email: tkedch@msn.com Cell Phone: 510-371-4717 [[alternative HTML version deleted]]

Dear list, Is there a generalised form of rbind/cbind for combining matrices/arrays into higher-D structures? ie. if I have: a <- matrix(2,2,2) b <- matrix(3,2,2) how can I get array(rep(c(3,2), each=4), c(2,2,2)) ? It seems like this would be the job of a generalised abind function: abind(a,b, along=1) == rbind(a,b) abind(a,b, along=2) == cbind(a,b) abind(a,b, along=3)

I often need to "combine" data frames, sometimes "vertically" and other times "horizontally". When it "better" to use merge? When is it better to use rbind or cbind? Are there clear pros and cons of each approach? --------------------------------- [[alternative HTML version deleted]]

Hi, How to cbind or rbind different lengths vectors/arrays without repeating the elements of the shorter vectors/arrays ? > cbind(1:2, 1:10) [,1] [,2] [1,] 1 1 [2,] 2 2 [3,] 1 3 [4,] 2 4 [5,] 1 5 [6,] 2 6 [7,] 1 7 [8,] 2 8 [9,] 1 9 [10,] 2 10 [[alternative HTML version deleted]]

Today's R 1.9.0 beta: > m1 [,1] [,2] [,3] [,4] [1,] NA NA NA NA [2,] NA NA NA NA [3,] NA NA NA NA [4,] NA NA NA NA > class(m1[1,1]) [1] "list" > cbind(m1,m1) Error in cbind(...) : cannot create a matrix from these types > rbind(m1,m1) Error in rbind(...) : cannot create a matrix from these types > version _

As some of you may have seen / heard in the past, it is not possible to make cbind() and rbind() into proper S4 generic functions, since their first formal argument is '...'. [ BTW: S3-methods for these of course only dispatch on the first argument which is also not really satisfactory in the context of many possible matrix classes.] For this reason, after quite some discussion on

This was originally a bug report about Matrix, https://r-forge.r-project.org/tracker/?func=detail&atid=294&aid=6325&group_id=61 but the bug is rather a "design" bug in R, or a limitation. This e-mail is a report of the status quo as I see it, and call for comments, sugguests, help/hints for workarounds, or even a suggestion for a programming task helping R core to amend

Hi R users: When I try to merge or bind (cbind or rbind) two series, both with a "FinCenter" different that GMT, the result is "GMT" not the original financial center? What am I doing wrong? ###################################################### require(timeSeries) getRmetricsOptions("myFinCenter") setRmetricsOptions(myFinCenter = "America/Bogota")

In the time honored spirit of wishing to do nothing well, could I suggest that the Splus (versions 5 and 6) response to: > rbind(NULL,NULL) NULL is preferable to the R response: > rbind(NULL,NULL) Error in rbind(NULL, NULL) : attempt to set an attribute on NULL This is on: platform sparc-sun-solaris2.8 arch sparc os solaris2.8 system sparc, solaris2.8 status major 1

Hi all, this question has already been posted on stackoverflow, however without success, see also http://stackoverflow.com/questions/27886535/proper-way-to-use-cbind-rbind-with-s4-classes-in-package. I have written a package using S4 classes and would like to use the functions rbind, cbind with these defined classes. Since it does not seem to be possible to define rbind and cbind directly as S4

Dear List, I'm struggling with the signature writing cbind/rbind functions for a S4 class. First of all, I'm very happy that it is now possible to dispatch on ... I follow the example for "paste" in ?dotMethods, which works as far as this: ### start example setClass ("cbtest", representation = representation (data = "data.frame"),